contraceptions
- progestin subdermal implant is the most effective contraceptive method with a >99% efficacy rate.
- Lasts 3 years
- more effective than IUD and sterilization
- causes mucus thickening, decreased tubal motility, suppresses ovulation
- SE: unscheduled bleed, weight gain, headache
- Contraindication: progesterone receptor+ breast cancer
- After removal: fertility returns within a month
phenytoin toxicity can cause failure in contraception with OCP by enhancing the metabolism of oral contraceptive pills through the induction of hepatic enzymes.