A 47-year-old member asked:
does plan b work?
2 doctor answers
Dr. Dennis Higginbotham answered
29 years experience Obstetrics and Gynecology
Yes: Plan b is about 90% effective if taken within 3 days (72 hours) of having unprotected sex. It may still work up to 5 days (120 hours) after unprotected sex, but the failure rate is higher.
Answered on Feb 29, 2020
Dr. Karen Pendleton answered
36 years experience Preventive Medicine
Plan B can work: Plan B pills contain a high dose of the active ingredient Levonorgestrel, which is a second generation progestin. Progestins, just like natural Progesterone cause the uterine endometrium to slough thus causing a period. It works mainly by stopping the release of an egg from the ovary. It is possible that it may also work by preventing fertilization of an egg and its attachment to the uterus.
Answered on Nov 28, 2017
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
People also searched for:
Connect by text or video with a U.S. board-certified doctor now — wait time is less than 1 minute!