While plan b can be taken up to 72 hours after unprotected sex, its efficacy decreases with time, and it is best to take it as soon as possible You should take it as soon as possible, since the sooner you take it, the better it works 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.
Plan b can be taken within 72 hours (3 days) after unprotected sex You do not have to wait until the morning after having unprotected sex to take plan b Use our countdown calculator to find out if you're within the window to take plan b.
