Progesterone
Also sold as: Utrogestan, Cyclogest
Prescription neededFamily planning and hormones
Comes as:CapsuleVaginal pessaryInjectionGel
Usual adult dose
Dose is set by your doctor or gynaecologist and depends on the reason (for example 200 to 400 mg vaginal capsules or pessaries a day to support early pregnancy). Use only as prescribed.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- drowsiness or dizziness (take capsules at bedtime)
- breast tenderness
- bloating
- vaginal discharge or irritation
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- pain or swelling in one leg
- chest pain
- sudden severe headache
Do not take it, or take care, if
- Unexplained vaginal bleeding
- Previous blood clot or stroke
- Breast cancer or serious liver disease
- Missed or incomplete miscarriage
Interactions
Medicines that can react with this one.
Moderate2 medicinesTake together only with care. Ask your doctor or pharmacist.
- Carbamazepine
Carbamazepine lowers progesterone levels and can make it less effective.
- Rifampicin