Reproductive System & Sexual Health >
Emergency Contraception
“Forms of contraception that are effective if administered within a specified period after sexual intercourse”
Hormonal
- Levonorgestrel
- The higher dose of progestin to normal contraception
- Prevents LH surge and suppresses follicular rupture
- Affects corpus luteum function
- E.g. Levonelle in first 72hrs
- Consider weight BMI>26 less effective
- C/I with epileptic medication/ liver enzyme inducers
- E.g. ulipristal
- Selective progesterone receptor modulator – anti-progesterone
- Delays follicular development and rupture by suppressing oestrogen
- Endometrium hostile to fertilised egg
- E.g. Ellaone up to 120hrs
- Inhibits/delays ovulation
- C/I with liver enzyme inducers, drugs that increase gastric pH
Non-Hormonal
- Copper IUD can be used 3-5days post-coital
- Prevents fertilisation and implantation