Insulin
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By The Health Stacks Research TeamUpdated September 24, 2026
Insulin is a natural chemical messenger made by your body. It is a small chain of building blocks called amino acids, called a peptide. Doctors have studied it for a long time. It is approved as a real medicine.
Insulin helps sugar move from your blood into your cells. Your cells use that sugar for energy. Without it, sugar builds up in the blood and can make you very sick. People with diabetes use insulin shots to stay healthy.
Insulin is different from many new peptide products sold online. Those new ones have not been well tested in people. Insulin has been rigorously studied and approved by the FDA. That makes it one of the trusted peptide medicines. Still, insulin should only be used with a doctor's care, because too much can cause low blood sugar, which is dangerous.
ApprovedApproved by a regulator (e.g. FDA) for a specific medical use — the highest research-status tier. Verified confidence80–100 — backed by strong, well-corroborated sources (peer-reviewed research, clinical guidelines). Our highest confidence tier.
Benefits
What Insulin Helps With
The main themes across 382 research studies, in plain language.
Immune modulation
Immune & inflammatory modulation
75/100Rated 75/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 4 underlying claimsResearch suggests insulin signaling pathways may influence immune responses and inflammatory conditions.
Research examples
- Treatment of autoimmune diseases
- Intermittent fasting decreases... inflammation markers
- Blocking IL-1 beta receptor may enhance insulin production
B-cell immunotherapy
50/100Rated 50/100Source typeUnclassified sourceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 1 underlying claimResearch suggests specific peptides can target B cells for the treatment of autoimmune conditions.
Glycemic & metabolic
Blood sugar regulation
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources5Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 138 underlying claimsResearch suggests insulin plays a central role in regulating glucose metabolism, lowering blood sugar, and managing diabetes.
Treatment convenience & dosing
90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources21Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 6 underlying claimsResearch suggests modified insulin formulations can offer improved convenience through weekly or rapid-acting dosing profiles.
Safety & hypoglycemia risk
90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 6 underlying claimsStudies indicate certain insulin analogues may reduce the risk of nocturnal hypoglycemia compared to standard therapies.
Cost & manufacturing efficiency
72/100Rated 72/100Source typeEstablished referenceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 5 underlying claimsResearch suggests alternative production methods for insulin analogues may lower manufacturing costs and improve affordability.
Cardiovascular & vascular
Cardiovascular & metabolic markers
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 10 underlying claimsResearch points to associations between insulin signaling pathways and cholesterol levels, as well as cardiovascular outcomes.
Research examples
- Reduced Risk of Major Adverse Cardiac Events and Mortality
- IGF-1 is positively associated with HDL-C and Total Cholesterol
- Predictor of age-related morbidity... cardiovascular disease
Blood coagulation support
72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 1 underlying claimResearch suggests certain peptides may reduce bleeding events in hemophilia.
Neuroprotection & cognitive
Brain & cognitive support
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 16 underlying claimsResearch suggests insulin acts as a neuromodulator in the brain, potentially influencing memory, attention, and cognitive function.
Behavioral & sensory processing
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsResearch suggests insulin signaling pathways may modulate behavioral responses to environmental stimuli.
Reproductive & hormonal
Reproductive & hormonal health
72/100Rated 72/100Source typeEstablished referenceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 7 underlying claimsStudies indicate insulin levels correlate with testicular function and fetal growth during pregnancy.
Genetic & developmental signaling
50/100Rated 50/100Source typeUnclassified sourceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsResearch suggests insulin-like signaling plays a role in stem cell specification and neuroendocrine development.
Research examples
- Specification of medulla cell types in the developing optic lobe
- Development of the central neuroendocrine system
Muscle, tissue & wound repair
50/100Rated 50/100Source typeUnclassified sourceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 7 underlying claimsResearch suggests insulin supports protein synthesis, muscle maintenance, and fibroblast activity for tissue repair.
Bone health & density
72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 9 underlying claimsStudies suggest insulin and related growth factors may stimulate bone formation and correlate with bone mineral density.
Research examples
- Increases bone formation while decreasing bone breakdown
- Collagen peptide supplements improve bone mineral density in post-menopausal individuals
- Correlates with bone weakness...
Digestive & pancreatic function
85/100Rated 85/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 8 underlying claimsResearch indicates insulin regulates digestive enzyme secretion, pancreatic exocrine function, and gut motility.
Antimicrobial & antiviral support
· 2 underlying claimsResearch suggests certain peptides related to insulin pathways may exhibit antimicrobial properties.
Research examples
- Antimicrobial peptides (AMPs) restore skin barrier...
- Shortens duration of influenza symptoms...
Molecular stability & structure
50/100Rated 50/100Source typeUnclassified sourceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsResearch suggests structural modifications to insulin can enhance its stability and biological activity.
Weight & appetite management
90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources4Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 27 underlying claimsStudies indicate that insulin and related peptides influence body weight, fat storage, and appetite signals.
Longevity & aging biomarkers
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 8 underlying claimsStudies suggest insulin signaling pathways may influence lifespan and serve as biomarkers for age-related morbidity.
Skin health & cosmetics
· 2 underlying claimsResearch suggests collagen peptides and insulin-related factors may support skin elasticity and barrier function.
Research examples
- Collagen supplements improve skin moisture, elasticity...
- Antimicrobial peptides (AMPs) restore skin barrier...
Sleep & circadian regulation
60/100Rated 60/100Source typeSpecialist communityIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 3 underlying claimsPreliminary research suggests insulin and related peptides may influence sleep induction and circadian signaling.
Research examples
- Sleep induction (DSIP)
- PDX1 induces circadian signaling to support proper beta cell function
- Affects sleep, metabolism, immunity, and cognition
Kidney & liver function
· 2 underlying claimsResearch suggests insulin regulates hepatic glucose output and may play a role in liver metabolism.
Research examples
- Inhibition of hepatic glucose production
- Metformin... decreases hepatic glucose release
Cancer treatment applications
95/100Rated 95/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsResearch suggests insulin-like growth factors and related peptides are being studied for their role in cancer treatment.
Cellular energy & mitochondria
90/100Rated 90/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 9 underlying claimsResearch suggests insulin facilitates glucose uptake for cellular energy and regulates mitochondrial quality control.
Pain & physical recovery
50/100Rated 50/100Source typeUnclassified sourceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →· 2 underlying claimsPreliminary research suggests newer peptides may show promise in improving recovery scores and pain management.
Research examples
- Newer peptide injections may improve overall pain scores for knee pain recovery
- Newer peptides show promising results for overall recovery...
Free: The Peptide Stack Cheat-Sheet
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How People Use It
3 reported routines — each line links to the source it came from.
From published sources
Routines as reported in peer-reviewed papers, clinical guidance, or vetted media — each linked to the source it came from.
SubQ
- Once a week, on the same day each week. Dose adjusted based on blood glucose levels. 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources25Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
Topical
- 100 per 30 days 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
General
- daily 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
mg vs mcg: one milligram (mg) equals 1,000 micrograms (mcg) — multiply by 1,000 going from mg to mcg, divide by 1,000 going from mcg to mg. Mixing the two up is a thousand-fold dosing error: 1 mg taken instead of 1 mcg is a 1,000× overdose; 1 mcg instead of 1 mg is a 1,000× underdose. Always double-check the unit label and the decimal place.
Safety
Known Side Effects
Adverse effects reported in the research and by community use.
- Kidney diseaseSevere 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ aspe.hhs.gov
- Vision lossSevere 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ aspe.hhs.gov
- HospitalizationsSevere 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ aspe.hhs.gov
- AmputationsSevere 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ aspe.hhs.gov
- Hypoglycaemia (low blood glucose levels)ModerateReported in 108 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources108Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu+104
- Higher risk of hypoglycaemia in Type 1 diabetes compared to daily basal insulinModerate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- LipodystrophyMildReported in 8 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources8Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ aafp.org↗ idf.org↗ idf.org+4
- Fatty lumps under the skin (lipohypertrophy)Mild 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- KetoacidosisSevereReported in 3 sources 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ doi.org↗ aspe.hhs.gov↗ scientificarchives.com
- Increased hypoglycaemic events in Type 1 DiabetesSevereReported in 11 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources11Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu+7
- Increased hypoglycaemic events in type 1 diabetes compared to daily basal insulinSevereReported in 3 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu
- Higher rate of hypoglycaemic events in type 1 diabetesSevereReported in 2 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu
- Higher rate of hypoglycaemic events in type 1 diabetes compared to daily basal insulinSevere 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Lipodystrophy (changes in the distribution of body fat under the skin)ModerateReported in 21 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources21Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu+17
- Lipodystrophy (changes in the distribution of body fat)Moderate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Hypoglycaemia (excessively low blood sugar)ModerateReported in 3 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ ema.europa.eu
- Early hypoglycaemia (within first 2 hours post-dose)Moderate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Nocturnal hypoglycaemia in childrenModerateReported in 2 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu
- Hypersensitivity reactionsModerateReported in 2 sources 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ products.sanofi.us
- Hypersensitivity reactions to human insulin or ingredientsModerate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Fatty lumps under the skin at injection site (lipohypertrophy)Mild 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Fatty lumps under the skin at the injection site (lipohypertrophy)Mild 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Early hypoglycaemia (within 2 hours of dosing)Moderate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Nighttime hypoglycaemia in childrenModerate 90/100Rated 90/100Source typeRegulator or clinical registryIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu
- Abdominal painModerate 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ medlineplus.gov
- Unusual tiredness (DKA warning sign)Moderate 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu
- Dry mouth and thirstModerate 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu
- Stomach painModerate 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu
- Fruity odor to breathModerate 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu
- Rapid breathing or difficulty breathingSevere 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu
- PainMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- RednessMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- FeverMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- ChillsMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- WeaknessMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- DizzinessMildReported in 3 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ magazine.medlineplus.gov↗ verywellhealth.com↗ english.mathrubhumi.com
- Nausea or vomitingMildReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ medlineplus.gov↗ verywellhealth.com
- Muscle or joint achesMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- FatigueMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- HeadacheMildReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com↗ cspi.org
- Trouble breathingSevereReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ medlineplus.gov↗ verywellhealth.com
- Low or high blood pressureModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- Swelling and weight gain from retaining fluidModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- Heart palpitationsModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- Sinus congestionMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- DiarrheaMildReported in 5 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources5Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com↗ humanitarianncdaction.org↗ humanitarianncdaction.org↗ humanitarianncdaction.org+1
- InfectionModerateReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com↗ mysanofiinsulin.co.uk
- Organ inflammationSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- HypoglycaemiaSevereReported in 6 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources6Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ema.europa.eu↗ ema.europa.eu↗ clinicaltrialsarena.com↗ healthnz.govt.nz+2
- ItchingMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ clinicaltrialsarena.com
- RashMildReported in 3 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ clinicaltrialsarena.com↗ products.sanofi.us↗ products.sanofi.us
- Injection site reactionsMildReported in 9 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources9Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ clinicaltrialsarena.com↗ singlecare.com↗ singlecare.com↗ idf.org+5
- Upper respiratory tract infectionMildReported in 3 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources3Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com↗ products.sanofi.us↗ products.sanofi.us
- Unspecified infectionMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Accidental injuryMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- HeadachesMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Severe pain from frequent injectionsModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ patents.google.com
- Hypoglycemia (palpitations, sweating, hunger, anxiety, tremor, pale complexion)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Severe hypoglycemia causing dizzinessLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Weight gain (insulin)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Low blood sugar / hypoglycemia (insulin)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Discomfort at injection site (insulin)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Diarrhoea (metformin)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Nausea (GLP-1 agonists)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Weight gain (sulphonylureas and pioglitazone)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Low blood sugar (sulphonylureas)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Genital thrush (SGLT2 inhibitors)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Increased fat tissue productionModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Allergic reactions (hivesSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Heart problems (high blood pressureModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Stomach problems (nauseaMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Cognitive problems (headachesMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Skin sensitivity and rashMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Immune system reactions from impurities (Copper peptide injections)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Reduced insulin sensitivity and increased blood sugar (from GHS)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- Hypoglycemia risk associated with Diazoxide CholineModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ synapse.patsnap.com
- Increased fat tissue formationModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Hyperglycemia (in type 2 diabetes mellitus due to impaired GIP function)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Hypoglycaemia (low blood glucose) from excess insulinSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Palpitations, sweating, hunger, anxiety, tremor and pale complexionModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- DizzinessLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Metformin-induced nauseaMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Insulin-induced extra weight gainMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Insulin-induced low blood glucose symptoms (dizziness and sweating)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Insulin injection site discomfortMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Premature exposure to large amounts of glucocorticoids disturbs normal foetal growth and causes incorrect tissue developmentSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- High maternal cortisol levels result in smaller babies and earlier birthModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Excess IGF-II leads to foetal overgrowthModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Insufficient thyroid hormone causes congenital hypothyroidismSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- Edema (fluid retention)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Injection site reactions (skin rashMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Low potassiumModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Insulin-induced hyperglycemia (high blood sugar)LifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Insulin resistanceModerateReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com↗ idf.org
- swellingMildReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com↗ lantus.com
- soreness at the needle siteMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- itchingMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- rash at the needle siteMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- confusionLifeThreateningReported in 2 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ medlineplus.gov↗ yourhormones.info
- fitsLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- and comaLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- swellingSevere 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- difficulty breathing)Severe 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- fast heart rateModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- palpitations)Moderate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- VomitingMildReported in 6 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources6Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthonline.washington.edu↗ webmd.com↗ humanitarianncdaction.org↗ humanitarianncdaction.org+2
- DiarrheaMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- DizzinessMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- FatigueMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ webmd.com
- confusionLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- fitsLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- and coma in severe hypoglycaemiaLifeThreatening 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- VomitingMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- or diarrhoeaMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ yourhormones.info
- rednessMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- or itching)Mild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- CoughMildReported in 20 sources 72/100Rated 72/100Source typeEstablished referenceIndependent sources20Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ msdmanuals.com↗ afrezza.com↗ afrezza.com↗ afrezzahcp.com+16
- WheezingModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ msdmanuals.com
- Shortness of breathModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ msdmanuals.com
- Lung irritationModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ msdmanuals.com
- Gastrointestinal side effectsMild 70/100Rated 70/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Loss of appetiteMild 70/100Rated 70/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Dark urineMild 70/100Rated 70/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Muscle painMild 70/100Rated 70/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com
- Hypokalemia (low potassium)SevereReported in 2 sources 70/100Rated 70/100Source typeEstablished referenceIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com↗ beyondtype1.org
- Allergic reactionsSevereReported in 5 sources 70/100Rated 70/100Source typeEstablished referenceIndependent sources5Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ singlecare.com↗ idf.org↗ idf.org↗ mysanofiinsulin.co.uk+1
- Rare insulin allergiesModerate 70/100Rated 70/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthline.com
Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.
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Evidence
Research Citations (294)
Every claim above traces back to a source you can check — here are 294 of them.
- Source
A peptidomimetic targeting white fat causes weight loss and improved insulin resistance in obese monkeys
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Insulin-like growth factor-I (IGF-I) and especially IGF-I variants are anabolic in dexamethasone-treated rats.
1992 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Insulin/insulin-like growth factor I hybrid receptors have different biological characteristics depending on the insulin receptor isoform involved.
2002 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Signal transduction of the GLP-1-receptor cloned from a human insulinoma.
1994 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Internalization of CD26 by mannose 6-phosphate/insulin-like growth factor II receptor contributes to T cell activation.
2000 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Effects of acute insulin deficiency on glucose and ketone body turnover in man: evidence for the primacy of overproduction of glucose and ketone bodies in the genesis of diabetic ketoacidosis.
1980 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Heat shock proteins are important mediators of skeletal muscle insulin sensitivity.
2011 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
INS insulin [ Homo sapiens (human) ]
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Ins2 insulin II [ Mus musculus (house mouse) ]
95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Insulin: understanding its action in health and disease.
2000 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Glucose regulation of insulin gene expression in pancreatic beta-cells.
2008 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Insulin Biosynthesis, Secretion, Structure, and Structure-Activity Relationships.
2014 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
The first sequence. Fred Sanger and insulin.
2002 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
Insulin-related material in microbes: similarities and differences from mammalian insulins.
1985 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology → - Source
A review of piscine islet xenotransplantation using wild-type tilapia donors and the production of transgenic tilapia expressing a "humanized" tilapia insulin.
2014 95/100Rated 95/100Source typePeer-reviewed studyIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →
Timeline
History & Milestones
Key moments in Insulin’s research and regulatory timeline — sourced and dated.
- Correction to: “Approach to the Patient: Insulinoma”PublicationJun 17, 2026Related:Insulin
- Insulin: The master regulator of glucose metabolism.PublicationApr 1, 2022Related:Insulin
- Skeletal muscle insulin resistance is the primary defect in type 2 diabetes.PublicationNov 1, 2009Related:Insulin
- Obesity and insulin resistancePublicationAug 1, 2000Related:Insulin
- Glucose-Dependent Insulinotropic Polypeptide Receptors Are Expressed in the Lateral Septum and Reduce Electrically-Evoked Dopamine Release as well as the Ability of Cocaine to Increase Extracellular DopaminePublicationJul 1, 1955Related:Insulin
News
Latest on Insulin
Dated, sourced reporting that mentions Insulin.
ResearchJun 18, 2026
How GLP-1 drug semaglutide may play a role in reproductive health
Early evidence suggests semaglutide may improve fertility outcomes in women with PMOS (formerly PCOS) and support male reproductive health in obesity. An analysis in Fertility and Sterility reported fertility-related improvements in women, while a review presented at ENDO 2026, not yet peer-reviewed, suggested benefits for testosterone and sperm quality in men. Larger, longer-term studies are still needed to confirm these effects.
72/100Rated 72/100Source typeEstablished referenceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →Read →
ClinicalJun 22, 2025
Inhaled insulin safe, effective for children with diabetes
Data from the INHALE-1 trial presented at the American Diabetes Association Scientific Sessions indicates that MannKind’s Technosphere insulin (Afrezza) is a safe and effective alternative to injected rapid-acting analogs for children and adolescents with diabetes. The study found that the inhaled formulation achieved similar HbA1c reductions to standard care while resulting in less weight gain and higher patient satisfaction scores.
50/100Rated 50/100Source typeUnclassified sourceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →Read →
ConsumerFeb 6, 2025
Peptides for weight loss: Which ones work best?
This Medical News Today consumer health article explains how peptide-based medications, primarily GLP-1 receptor agonists like semaglutide, work for weight loss. It covers mechanisms such as appetite reduction, delayed gastric emptying, and improved satiety, and compares FDA-approved options including Wegovy, Ozempic, and Rybelsus. It cites 2021 trial data showing roughly 15% body weight loss with weekly 2.4 mg semaglutide over 68 weeks, and discusses side effects and safety considerations.
72/100Rated 72/100Source typeEstablished referenceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →Read →
SafetyNov 26, 2024
Compounded semaglutide: Is it safe?
This article explains what compounded semaglutide is and why it may pose safety risks. Compounded versions are not FDA-approved, so their quality, safety, and effectiveness are not verified. It distinguishes compounded semaglutide from the three FDA-approved products: Ozempic, Rybelsus, and Wegovy. The article serves as a consumer safety overview of the risks of using non-approved compounded formulations.
72/100Rated 72/100Source typeEstablished referenceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →Read →
ConsumerMar 18, 2024
GLP-1 drugs for weight loss: How do they work, exactly?
This article explains how GLP-1 receptor agonist drugs such as semaglutide (Ozempic, Wegovy) and liraglutide promote weight loss in people with type 2 diabetes and obesity. A literature review suggests these drugs work through multiple mechanisms beyond insulin stimulation, including slowing gastric emptying and increasing satiety. Research is also exploring potential reduced risks of cancer and cardiovascular disease.
72/100Rated 72/100Source typeEstablished referenceIndependent sourcesstill being verifiedEvery claim links to the page it came from, and stronger sources rate higher. Full methodology →Read →
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