For example, the chances of pregnancy are higher if plan b is taken 4 days after unprotected sex, but are subsequently lowered if taken 3 days, 2 days, 1 day or within 24 hours after unprotected sex. The plan b pill works best when you take it within 3 days after unprotected sex You can get plan b at your local drugstore or pharmacy The primary active ingredient in plan b is levonorgestrel, a hormone that works primarily by delaying ovulation If taken in time, it can significantly reduce the risk of unintended pregnancy. Plan b can be taken within 72 hours (3 days) after unprotected sex
Use our countdown calculator to find out if you're within the window to take plan b. Plan b should be taken as soon as possible after unprotected sex, ideally within 72 hours for maximum effectiveness.
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