Semaglutide results: what to expect and when
A GLP-1 medicine with strong weight, glucose, heart and kidney evidence; dose and formulation matter.
Also called: Ozempic, Wegovy, Wegovy HD, Wegovy FlexTouch, Rybelsus, oral semaglutide, NN9535, NN9924.
GLP-1 / GIP / glucagon agonists · GLP-1 receptor agonist · Evidence: Approved drug.
- Weeks 1-4: The Wegovy injection schedule starts at 0.25 mg weekly, with nausea and other stomach symptoms common during dose increases.
- Weeks 5-8: The planned Wegovy dose rises to 0.5 mg weekly, with a four-week delay allowed if the increase is not tolerated.
- Weeks 9-16: The Wegovy schedule uses 1 mg weekly for four weeks, then 1.7 mg weekly for four weeks.
- Week 17 onward: The usual Wegovy maintenance target is 2.4 mg weekly, with the dose based on response and side effects.
- Week 68: Adults without diabetes in STEP 1 averaged 14.9% weight loss with 2.4 mg weekly versus 2.4% with placebo.
Wegovy is used weekly for long-term weight management; its main weight-loss trial lasted 68 weeks.
642 registered interventional records include ongoing and comparator trials. Pivotal studies support major uses; this count is not 642 completed efficacy trials.
Key studies
- SUSTAIN 1: monotherapy: See the arm results; benefits and harms depend on dose and population. (source)
- SUSTAIN 2: versus sitagliptin: See the arm results; benefits and harms depend on dose and population. (source)
- SUSTAIN 3: versus exenatide: See the arm results; benefits and harms depend on dose and population. (source)
- SUSTAIN 4: versus basal insulin: See the arm results; benefits and harms depend on dose and population. (source)
- SUSTAIN 5: added to insulin: See the arm results; benefits and harms depend on dose and population. (source)
- SUSTAIN 6: heart outcomes: Heart events were fewer; diabetic eye complications were more frequent. (source)
Related to Semaglutide
- Tirzepatide: A weekly GIP/GLP-1 injection with strong diabetes and weight-loss evidence and common stomach side effects.
- Retatrutide: An experimental weekly injection with phase 3 weight-loss results.
- Liraglutide: A daily GLP-1 injection approved for weight management and type 2 diabetes.
- Dulaglutide: A weekly GLP-1 medicine approved for type 2 diabetes and lower heart-event risk.
- Exenatide: An older GLP-1 with twice-daily and weekly forms, now widely discontinued.
- Cagrilintide: An unapproved weekly amylin analogue with weight-loss trials and common stomach symptoms.
Sources
- Canada approves first generic semaglutide for weight loss, 2026
- FDA clarifies policies for compounders as national GLP-1 supply begins to stabilize, FDA · 2026
- FDA Proposes to Exclude Semaglutide, Tirzepatide, and Liraglutide on 503B Bulks List, FDA · 2026
- FDA Requests Removal of Suicidal Behavior and Ideation Warning from Glucagon-Like Peptide-1 Receptor Agonist (GLP-1 RA) Medications, FDA · 2026
- FDA Warns 30 Telehealth Companies Against Illegal Marketing of Compounded GLP-1s, 2026
- FDA’s Concerns with Unapproved GLP-1 Drugs Used for Weight Loss, FDA · FDA · 2026
- First GLP-1 tablet for weight loss approved in the UK, 2026
- Ozempic injection US prescribing information, July 2026; DailyMed Set ID 42bdd912-2393-44c4-b7e0-47672ca28991, 2026
- Rybelsus, INN-semaglutide, 2026
- Single-dose 7.2mg semaglutide (Wegovy) pen approved to treat adult patients with obesity, 2026
- The 2026 Monitoring Program, World Anti-Doping Agency · 2026
- These highlights do not include all the information needed to use RYBELSUS ® and OZEMPIC® tablets safely and effectively. See full prescribing information for RYBELSUS and OZEMPIC tablets. RYBELSUS (semaglutide) tablets, for oral use OZEMPIC (semaglutide) tablets, for oral use Initial U.S. Approval: 2017, 2026
- Wegovy semaglutide prescribing information: injection strengths, DailyMed · 2026
- WEGOVY- semaglutide injection, solution WEGOVY- semaglutide tablet, DailyMed · DailyMed · 2026
- Wegovy, INN-semaglutide, 2026
Sources checked: 2026-10-18.
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