How long is the morning after pilll active in your body?

The morning-after pill, primarily containing levonorgestrel or ulipristal acetate, is effective for preventing pregnancy when taken within a specific timeframe after unprotected intercourse, typically up to 72 hours for levonorgestrel and up to 120 hours for ulipristal acetate. However, the active ingredients do not remain in the body long-term; they are metabolized and eliminated within a few days. The hormonal effects may influence the menstrual cycle temporarily, but the pills do not provide ongoing protection against pregnancy after their use.