About medroxy progester one
Progestin contraceptive injection
Used for
- Long-acting contraception to prevent pregnancy
Usual adult dose
150 mg injected into a muscle every 12–13 weeks.
Usual dose in children
For adolescents after their first menstrual period: 150 mg injected into a muscle every 12–13 weeks.
Common side effects
- Irregular bleeding or missed periods
- Weight gain
- Headache
- Reduced bone mineral density
Important warnings
- Does not protect against sexually transmitted infections.
- Long-term use can reduce bone density; recovery may be incomplete.
- Delayed return to fertility can occur after stopping.
- Seek medical review for unexplained vaginal bleeding or possible pregnancy.
Pregnancy
Not used during pregnancy; stop if pregnancy is confirmed.
Breastfeeding
Can generally be used while breastfeeding; discuss timing after childbirth with a clinician.
Interactions
- Some enzyme-inducing medicines, including rifampicin and certain seizure medicines, may reduce contraceptive effectiveness.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.