What it is used for
- Irregular, absent, or heavy periods linked to low progesterone
- Painful periods and some menstrual disorders
- Supporting the womb lining as part of certain hormone therapy or fertility treatment (when prescribed)
- Some pregnancy-support uses under specialist care
How it works
It acts like the body's own progesterone on the womb lining, helping to regulate the menstrual cycle and support the lining when natural progesterone is low.
How it is taken
Taken as a tablet on a schedule that depends on the reason for use, such as during part of the menstrual cycle. Take it exactly as your doctor directs, as timing within the cycle matters.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Headache
- Nausea
- Breast tenderness
- Changes in bleeding pattern
- Mood changes
- Tiredness
Serious effects — get help
- Signs of a serious allergic reaction
- Yellowing of the skin or eyes
- Unexpected heavy or unusual vaginal bleeding
- Symptoms suggesting a blood clot (uncommon)
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Liver-enzyme-inducing medicines (some epilepsy and TB drugs, St John's Wort)
- Tell your clinician about all medicines
Who should take care
- Tell your clinician about any unexplained vaginal bleeding, liver disease, or hormone-sensitive cancer before use
- Take it according to the correct days of your cycle as instructed
- Report any unexpected or heavy bleeding
- Tell your clinician if you are or might be pregnant, as the plan depends on your situation