Progesterone is a natural female hormone. In medicine it’s used for several different purposes, depending on the condition being treated. Here’s a quick overview:
Common uses
- Fertility and pregnancy support: used for luteal phase support or to help maintain early pregnancy in certain fertility treatments.
- Menopause-related therapy: when combined with estrogen (hormone replacement therapy), progesterone protects the uterine lining and can help with symptoms; it’s different from “progestin” (the synthetic version).
- Abnormal uterine bleeding and endometrial issues: can help regulate the menstrual cycle or treat certain conditions like endometriosis.
- Prevention of preterm birth: in some pregnant people at high risk.
- Other gynecologic conditions: sometimes used to manage symptoms from fibroids or to suppress menstrual bleeding.
Forms you might see
- Oral micronized progesterone (eg, capsules taken by mouth)
- Vaginal progesterone products (gels, suppositories, or vaginal inserts)
- Injectable forms (less common outside certain fertility settings)
- There are also combined hormone therapies (estrogen + progesterone) for menopause management
Important safety notes
- The form and dose depend on why it’s being used; your clinician will prescribe the right regimen.
- Side effects can include fatigue or drowsiness, dizziness, breast tenderness, mood changes, headaches, or breakthrough bleeding with some forms. Vaginal forms can irritate the vaginal area.
- If you’re pregnant or trying to conceive, use only under medical guidance. Do not start or stop progesterone therapy without talking to a clinician.
- In menopause hormone therapy, adding progesterone reduces the risk of uterine cancer due to estrogen, but risks associated with hormone therapy (eg, breast cancer, blood clots, cardiovascular effects) depend on many factors and need a personalized discussion.
- Interactions: certain drugs (enzyme inducers, some anticonvulsants, rifampin, St. John’s wort) can affect progesterone levels. Tell your clinician about all medicines you’re taking.
If you’d like, tell me:
- What you’re using or considering progesterone for (menopause symptoms, infertility, abnormal bleeding, endometriosis, etc.)
- The country you’re in (so I can reference commonly used products there)
- Whether you’re asking about a specific product or dose
I can tailor the information to your exact use and help with questions to ask your doctor. Note: I can’t replace medical advice—please consult a healthcare professional for personalized guidance.