Plan B One-Step Emergency Contraceptive (72 Hour Efficacy Window)
![Plan B One-Step Emergency Contraceptive (72 Hour Efficacy Window)](https://i5.walmartimages.com/seo/Plan-B-One-Step-Emergency-Contraceptive-72-Hour-Efficacy-Window_9b6b891c-d94d-42d2-94d8-8c256452c56f.c76f8a8a5cfcf1e6bf1aaffb33b121e5.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Plan B One-Step emergency contraception helps prevent pregnancy before it starts after unprotected sex or birth control failure. Plan B must be taken
Ella controls Ty|TikTok Search
Plan B One-Step emergency contraception helps prevent pregnancy before it starts after unprotected sex or birth control failure. Plan B must be taken within 72 hours (3 days) after unprotected sex or birth control failure. The sooner it's taken, the better it works. Plan B works by temporarily delaying ovulation or the release of an egg from the ovary. No egg. No fertilization. No pregnancy. Plan B One-Step will not work if you are already pregnant and won't impact an existing pregnancy.
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Plan B One Step Emergency Contraceptive, 1.5 mg, Tablet
![](https://images.ctfassets.net/4f3rgqwzdznj/4Rvjl9p693EtVACnB4viJ5/83eb1edff13dc4619d995c3ad9590849/white_pills_pink_background_glass_bottle-1339372592.jpg)
How Effective is Plan B? Experts Discuss - GoodRx
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How Effective Is Plan B One-Step?
![](https://media.post.rvohealth.io/wp-content/uploads/2021/07/copper-IUD-732x549-thumbnail-732x549.jpg)
Plan B Doesn't Work During Ovulation: Why This Is, What to Do
![](https://content.fortune.com/wp-content/uploads/2023/08/GettyImages-1241746190-e1692218981527.jpg)
Emergency contraception pill Plan B is 30% more effective when taken with this drug, new research shows
Plan B One-Step emergency contraception helps prevent pregnancy before it starts after unprotected sex or birth control failure. Plan B must be taken within 72 hours (3 days) after unprotected sex or birth control failure. The sooner it's taken, the better it works. Plan B works by temporarily delaying ovulation or the release of an egg from the ovary. No egg. No fertilization. No pregnancy. Plan B One-Step will not work if you are already pregnant and won't impact an existing pregnancy.
![](https://i5.walmartimages.com/seo/Plan-B-One-Step-Emergency-Contraceptive-72-Hour-Efficacy-Window_cb6bcb43-f7cf-417f-8e3a-43b6698bca03.e4c0c0f17ce13599914fecb7a3a5af0a.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Plan B One Step Emergency Contraceptive, 1.5 mg, Tablet
Ella controls Ty|TikTok Search
![](https://www.verywellhealth.com/thmb/l8RXYDYKo1oXucVcezNyL6WIN8c=/400x250/filters:no_upscale():max_bytes(150000):strip_icc()/VWH-GettyImages-602936027-47279cc789e641afa1dfe090f8d63cbe.jpg)
How Effective Is Plan B One-Step?
![](https://assets.nhs.uk/nhsuk-cms/images/S_0917_morning-after-pill_M9201502.width-320.jpg)
Emergency contraception (morning after pill, IUD) - NHS
Plan B One-Step emergency contraception helps prevent pregnancy before it starts after unprotected sex or birth control failure. Plan B must be taken within 72 hours (3 days) after unprotected sex or birth control failure. The sooner it's taken, the better it works. Plan B works by temporarily delaying ovulation or the release of an egg from the ovary. No egg. No fertilization. No pregnancy. Plan B One-Step will not work if you are already pregnant and won't impact an existing pregnancy.
![](https://i5.walmartimages.com/asr/b253b02f-72f0-4d8d-a62a-712b152ecdf7.4d60e26e0779545d57250d4ae6c8ae63.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Plan B One Step Emergency Contraceptive, 1.5 mg, Tablet