Does Prometrium cause weight gain or loss?
Weight changes on medication are one of the most common reasons people consider switching or stopping. Prometrium (Progesterone) may or may not affect weight depending on the active ingredient and the indication; this page separates documented effects from anecdote and explains the practical management at 100mg, 200mg.
Documented weight effects of Prometrium
Whether Prometrium causes weight gain, loss or no meaningful change depends on Progesterone and how it acts. Some medications in Hormones and Birth Control affect appetite directly; others alter fluid balance, metabolic rate, or sleep — all of which can shift weight. The prescribing information lists weight effects observed in clinical trials.
Practical management
Modest weight changes (±1–3 kg) over the first months on Prometrium at 100mg, 200mg are common and often resolve without intervention. Larger or distressing changes deserve a discussion with the prescriber. According to general clinical guidance, the right response is not always to stop Prometrium — diet, activity, sleep and addressing the underlying condition all matter.
Frequently asked questions
Will I gain weight on Prometrium? ▾
Some users gain weight on Prometrium, some lose, most stay close to baseline. The pattern depends on Progesterone and the individual. The prescribing information lists average weight effects observed in clinical trials.
Can I lose weight while on Prometrium? ▾
Weight loss is fully possible on Prometrium for most users, since the medication does not lock weight at a particular level. Diet, activity and sleep determine the trajectory; Progesterone is one input among many at 100mg, 200mg.
More on Prometrium
- With alcoholPrometrium and alcohol — is it safe to drink?
- With foodShould Prometrium be taken with food?
- Side effectsPrometrium side effects: common, rare and warning signs
- Dosage guidePrometrium dosage guide: how much to take and when
- OnsetHow fast does Prometrium start working?
- DurationHow long does Prometrium last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.