How long does Semaglutide take to work?
In the first week of Semaglutide, appetite drops. Nausea variable. Around week 4, first titration. 2-4lb down typically. By week 8, 5-8lb cumulative for most. Response varies between people, this is the commonly reported pattern, not a guarantee.
Week by week
- Week 1: Appetite drops. Nausea variable.
- Week 4: First titration. 2-4lb down typically.
- Week 8: 5-8lb cumulative for most.
References
- Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP-1) — Wilding JPH et al., NEJM, 2021
- Semaglutide and Cardiovascular Outcomes in Obesity without Diabetes (SELECT) — Lincoff et al., N Engl J Med, 2023
- Semaglutide and Cardiovascular Outcomes in Patients with Type 2 Diabetes (SUSTAIN-6) — Marso et al., N Engl J Med, 2016
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.