Who should not take Mazdutide?
Documented caution flags for Mazdutide include mTC / MEN-2 history and pancreatitis history. This is not exhaustive, and absence from this list is not a safety clearance. Anyone pregnant, nursing, or managing a serious medical condition should only consider it under a doctor's care, and safety data for Mazdutide is limited.
Documented caution flags for Mazdutide
- MTC / MEN-2 history
- Pancreatitis history
- Pregnancy / nursing
Reported side effects to weigh
- Nausea
- Constipation or diarrhea
- Mild fatigue
- Slightly elevated heart rate (glucagon effect)
References
- Mazdutide in Chinese adults with obesity (Phase 3) — Ji L et al., Nat Med, 2025
- Once-Weekly Mazdutide in Chinese Adults with Obesity or Overweight (GLORY-1) — Ji et al., N Engl J Med, 2025
- A phase 2 randomised controlled trial of mazdutide in Chinese overweight adults or adults with obesity — Ji et al., Nature Communications, 2023
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 2026-06-15.