Also called: Ozempic, Rybelsus, Wegovy
Semaglutide is a medicine that copies a natural body hormone called GLP-1. It is the main ingredient in the well-known drugs Ozempic and Wegovy. It is given as a shot, usually once a week. Doctors mostly give it to people with type 2 diabetes or obesity. It is also used to protect the heart, slow kidney problems, and treat fatty liver disease.
This medicine helps people feel full and less hungry, so they eat less and their blood sugar stays more steady. Scientists keep finding new ways it might help. Studies of real patient records found people with asthma had about 40% fewer asthma attacks and people with lung disease had about 20% fewer flare-ups. A big study in Sweden found people with a mood disorder had a 21% lower chance of going to the hospital for mental health reasons while taking it. In tests on mice, it even helped the mice live about 12% longer and stay stronger as they got old.
A test in young children with obesity showed it lowered their body weight, and 40% of the children were no longer obese after about a year and a half. Many of these new findings are still early. The long-life results come from mice, not people, so no one knows yet if it slows aging in humans. Some findings need more testing to be sure. The medicine can cost a lot without insurance, sometimes over a thousand dollars a month. People should only use it with a doctor's guidance and should not start it for these newer reasons until doctors say it is safe and it is allowed.
Benefits
The main themes across 2144 research studies, in plain language.
Studies indicate improvements in glycemic control, including lowered HbA1c and glucose-dependent insulin secretion, often with a low risk of hypoglycemia.
Research profiles the safety of the medication, noting specific side effects, the absence of certain risks (e.g., hypoglycemia without sulfonylureas), and long-term tolerability.
Studies explore formulations and delivery methods, such as oral versions or stable compounds, to improve patient adherence and convenience.
Preliminary research suggests potential protective effects against cognitive decline, dementia, and neurodegenerative diseases like Alzheimer's and Parkinson's.
Emerging studies suggest a role in reducing cravings for food, alcohol, and other substances, potentially by modulating brain reward pathways.
Evidence suggests a slowing of chronic kidney disease progression, including reduced albuminuria and preservation of glomerular filtration rate.
Studies indicate potential benefits for metabolic-associated steatohepatitis (MASH), including resolution of steatohepatitis and reduction of liver fibrosis.
Research suggests improvements in physical function, joint pain, and body composition, including fat mass reduction, alongside considerations for muscle preservation.
Research shows reductions in systemic inflammatory markers, such as C-reactive protein, and potential benefits for inflammatory conditions.
Research suggests significant reductions in body weight and appetite, achieved through mechanisms like delayed gastric emptying, increased satiety, and reduced caloric intake.
Research points to a reduction in major adverse cardiovascular events (MACE), including heart attack and stroke, as well as improvements in blood pressure and heart failure symptoms.
Early studies indicate potential effects on biological aging clocks and mortality risk, though long-term human data is still evolving.
Research suggests improvements in reproductive health markers, such as testosterone levels and ovulation, particularly in the context of obesity-related dysfunction.
Clinical trials indicate improvements in obstructive sleep apnea severity and sleep quality in patients with obesity.
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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
Oral
General
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.
Honest expectations
What the sourced research says it doesn’t do — as notable as what it does.
Safety
Adverse effects reported in the research and by community use.
Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.
Compare research-grade suppliers with third-party COAs and published purity data. For in-vitro and laboratory research use only — not for human consumption, diagnosis, or treatment.
A long-acting GLP-1 receptor agonist. Mimics human glucagon-like peptide-1 to increase glucose-dependent insulin secretion, suppress glucagon, slow gastric emptying, and reduce appetite. Approved as Ozempic (type 2 diabetes) and Wegovy (chronic weight management). Semisynthetic GLP-1 analog with a C18 fatty-acid side chain enabling albumin binding and extended half-life.
Evidence
Every claim above traces back to a source you can check — here are 105 of them.
Two-Year Effects of Semaglutide (STEP 5)
Once-Weekly Semaglutide for Weight Management: A Clinical Review
STEP 1 - Semaglutide in Overweight/Obesity
Cost-effectiveness of once-weekly semaglutide versus dulaglutide and lixisenatide in patients with type 2 diabetes with inadequate glycemic control in Sweden.
Comparison of Clinical Efficacy and Safety of Tirzepatide, Liraglutide and Semaglutide in Patients with Obesity and Without T2D: A Bayesian Network Meta-Analysis of Randomised Controlled Trials.
Efficacy and Safety of Once-Weekly Semaglutide Versus Exenatide ER in Subjects With Type 2 Diabetes (SUSTAIN 3): A 56-Week, Open-Label, Randomized Clinical Trial.
Semaglutide 2·4 mg once weekly in patients with non-alcoholic steatohepatitis-related cirrhosis: a randomised, placebo-controlled phase 2 trial.
Semaglutide
PubChem - Compound - Semaglutide
Ozempic – semaglutide injection, solution
Rybelsus – oral semaglutide tablet
Wegovy- semaglutide injection, solution; Wegovy- semaglutide tablet
Ozempic EPAR
Rybelsus EPAR
Wegovy EPAR
Timeline
Key moments in Semaglutide’s research and regulatory timeline — sourced and dated.
News
Dated, sourced reporting that mentions Semaglutide.
This journal listing includes several articles touching on obesity pharmacotherapy, most notably a systematic review and meta-analysis of subcutaneous semaglutide's effects on weight loss and inflammatory markers in adults with overweight or obesity without diabetes. Additional items examine GLP-1 receptor agonists from a rheumatological perspective and self-medication with GLP-1 drugs among Brazilian adults. The listing also covers broader obesity research, including bariatric surgery positioning and epidemiological studies.
New research suggests that semaglutide reduces the risk of major adverse cardiovascular events (MACE) not only through weight loss but also by lowering systemic inflammation. A study of over 17,000 patients found that reductions in the inflammatory biomarker hs-CRP accounted for roughly 28% of the drug's cardiovascular benefit. This indicates that semaglutide's mechanism for heart protection involves direct anti-inflammatory effects independent of glycemic control or body weight reduction.
Novo Nordisk's U.S. news portal highlights several key developments regarding its peptide-based portfolio. The company is actively challenging Eli Lilly's advertising campaigns regarding GLP-1 therapies, signaling ongoing market competition. Additionally, Novo Nordisk reported positive Phase 3 results for its hemophilia A drug denecimig and expanded access to Wegovy for Medicare beneficiaries.
Novo Nordisk has announced two major regulatory milestones in the European Union. The company received approval for an oral version of its weight management drug Wegovy, as well as a new 7.2 mg dose pen. Additionally, the company is taking legal action against Eli Lilly regarding misleading GLP-1 advertising campaigns.
The FDA has granted accelerated approval to Novo Nordisk’s Wegovy (semaglutide) for the treatment of metabolic dysfunction-associated steatohepatitis (MASH) with moderate to advanced liver fibrosis. This decision is based on Phase 3 data from the ESSENCE trial, where the drug significantly outperformed placebo in resolving liver inflammation and improving scarring. Wegovy is now the first GLP-1 receptor agonist approved for this liver condition.
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