How long does Petrelintide take to work?
In the first week of Petrelintide, appetite reduction begins. Less GI side effect profile than GLP-1 monotherapy. Around week 4, first titration step. Weight loss accruing. By week 8, phase 2 endpoint data showed steady cumulative loss. Response varies between people, this is the commonly reported pattern, not a guarantee.
Week by week
- Week 1: Appetite reduction begins. Less GI side effect profile than GLP-1 monotherapy.
- Week 4: First titration step. Weight loss accruing.
- Week 8: Phase 2 endpoint data showed steady cumulative loss.
References
- Zealand Pharma announces positive Phase 2 results for petrelintide, an amylin analog with potential to redefine the weight management experience for people living with overweight and obesity — Zealand Pharma (press release via GlobeNewswire), March 5, 2026
- Roche announces positive Phase II results for petrelintide, an amylin analog developed for people living with overweight and obesity — Roche (press release), March 5, 2026
- A Randomized, Double-Blind, Phase 2 Trial of Once-Weekly Petrelintide Compared With Placebo in Participants With Overweight or Obesity and Type 2 Diabetes (ZUPREME 2) — ClinicalTrials.gov, NCT06926842 (Sponsor: Zealand Pharma)
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.