The average cost for 30 capsules of 100mg of Prometrium is $16.25 with a free GoodRx coupon. This is 85.01% off the average retail price of $108.37.
Typical dosage for Prometrium
- Uterus protection: The typical dose is 200 mg by mouth once a day at bedtime for 12 days in a row. Repeat these directions every 28 days.
- Lack of menstrual periods: The typical dose is 400 mg by mouth once a day at bedtime for 10 days. You should expect a period within 7 days of your last capsule.








