Can Wegovy or Mounjaro affect my periods or menstrual cycle?
Neither Wegovy nor Mounjaro directly affects your menstrual cycle as a direct side effect of the medication itself. However, both medications can indirectly influence your periods through weight loss and hormonal changes, which may cause your cycle to become irregular, heavier, lighter, or even temporarily stop. Most menstrual changes occur within the first 1 to 3 months of treatment and typically resolve as your body adjusts.
Key points:
- Weight loss from these medications can release stored oestrogen from fat tissue, potentially causing heavier periods or hormonal fluctuations
- Improved insulin sensitivity, particularly beneficial for women with PCOS, may lead to more regular and lighter periods
- Changes may include irregular timing, missed periods, heavier bleeding, or the return of periods after a long absence
- Period changes are usually temporary and settle within a few months, though persistent irregularities should be discussed with a doctor
This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.