Prometrium (progesterone) is a hormone used to treat women with a history of miscarrying. Prometrium is also used to prevent overgrowth of the lining of the uterus in postmenopausal women who are receiving estrogen hormone therapy. Prometrium may also be used for purposes not listed in this medication guide.
Common side effects may include:
nausea, vomiting, bloating;
breast tenderness or discharge;
mood changes, sleep problems (insomnia); or.
Serious side effects may include:
depression, feeling irritable or changes in mood;
jaundice (yellowing of the skin or eyes);
swelling, rapid weight gain;
breast lumps; or
a change in vaginal bleeding (spotting, breakthrough bleeding). This is not a complete list of side effects and others may occur.
Prometrium comes in capsules of 100 mg. The usual starting dose is 200 mg at bedtime for 10 days in a row, starting on the first day of your period. If you take Prometrium for secondary amenorrhea, the usual dose is 400 mg daily for 10 days. Prometrium may interact with blood thinners, St. Prometrium can pass into breast milk and may harm a nursing baby. You should not breast-feed while using Prometrium. Prometrium is not approved for use by anyone younger than 18 years old.
Prometrium can cause birth defects. Do not use if this medicine you are pregnant.
How does it work?
Prometrium is a female hormone. It works by changing the lining of the uterus. Prometrium is used to cause monthly periods in women who have not yet reached menopause but are not having periods due to a lack of Prometrium in their bodies. Prometrium is also used to prevent overgrowth of the lining of the uterus in postmenopausal women who are receiving estrogen hormone therapy. Prometrium may also be used for purposes not listed in this medication guide.