Question: how long does the morning after pill to work?
Answer: You can get the Paragard IUD inserted or take ella up to 5 days (120 hours) after unprotected sex. Plan B, My Way, Take Action, and other levonorgestrel morning-after pills work best when you take them quickly after unprotected sex. They'll work best up to 3 days (72 hours) after unprotected sex.