| contraceptives, postcoital | Contraceptive substances to be used after coitus. Usually high doses of oestrogen are administered within 24-36 hours after coitus as an emergency measure, not as a replacement for the usual methods of contraception because of the side effects of high concentration of oestrogen. (12 Dec 1998) |
|---|---|
| contraceptives, postcoital, hormonal | Postcoital contraceptives which owe their effectiveness to hormonal preparations. (12 Dec 1998) |
| contraceptives, postcoital, synthetic | Postcoital contraceptives which owe their effectiveness to synthetic preparations. (12 Dec 1998) |