Patient's question:
How long after intercourse is it effective to take levonorgestrel emergency contraception pills? How many times can you take levonorgestrel emergency contraception pills at most?Doctor's answer:
Emergency contraception is usually taken with levonorgestrel tablets, which are effective when taken within 72 hours of intercourse. The earlier it is taken, the better the effect. Taking it after the time limit has passed will no longer provide contraceptive protection. It is not recommended to take it too frequently or in excessive amounts to avoid disrupting the endocrine system, which may lead to menstrual disorders. In severe cases, it may also pose a risk of secondary infertility. Two hours before and after taking it, fasting is required to prevent gastrointestinal reactions.