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Doctor insights on: Plan B Pill Effectiveness

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What is the percentage of effectiveness of Plan B pill?

What is the percentage of effectiveness of Plan B pill?

Plan B: Plan b one-step can reduce your risk of pregnancy by up to 95% is used within 24 hours of sex. ...Read more

Dr. Peter Baumann
875 doctors shared insights

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I ejaculated inside my gf and she took the Plan B pill within an hour. We had safe sex again shortly after will this affect the effectiveness of pill?

What is "safe sex"?: If you used a condom the first time, then Plan B shouldn't be necessary. Since she took plan b, i assume you didn't use a condom. Don't forget that condoms also lower one's risk for catching/giving sexually transmitted diseases & infections in addition to lowering risk for pregnancy. Plan b is a hormonal method for emergency contraception that should not be affected by other birth control pills. ...Read more

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If I took a plan B pill 3 days before my expected period will it change the effectiveness?

If I took a plan B pill 3 days before my expected period will it change the effectiveness?

See below: If you took it within 72 hours after sex, it should still be effective. It may change the rhythm of your menstrual cycle some. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Drink enough water daily so that your urine is mostly colorless. Practice safe sex. Get HPV vaccine. ...Read more

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I had sex on bc and took a plan b after bc of worry (perfect pill user). Can I have unprotected sex again w/o bc pill effectiveness being compromised?

I had sex on bc and took a plan b after bc of worry (perfect pill user). Can I have unprotected sex again w/o bc pill effectiveness being compromised?

See below: Nothing is 100% certain, but if you take your bc pills regularly, pregnancy is unlikely. If you have concerns about taking pills on time every day, you may consider an IUD. Practice safe sex. Get HPV vaccine. See this site for safer sex info http://www.aids.org/topics/aids-factsheets/aids-background-information/what-is-aids/safer-sex-guidelines/ ...Read more

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Can plan B lose effectiveness if I finished an antibiotic 3 days ago? Still on birth control pill

No: In general you do not need to take Plan B if you were already on birth control. Most antibiotics will not interact with either Plan B or birth control. If you are uncertain in the future you can always ask the pharmacist or just use a condoms during those days. ...Read more

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I took plan b 2 times 2 weeks separate. Had 1 period in between. Does it reduce the effectiveness of the pill? I was "ovulating" I think.Am i Pregnant

I took plan b 2 times 2 weeks separate. Had 1 period in between. Does it reduce the effectiveness of the pill? I was "ovulating" I think.Am i Pregnant

No: Pregnancy is unlikely in the scenario you just described. I'm not sure I understand, though, why you would be taking the pill and a Plan B regimen together; at the same time. Typically, there is no need to take them both at the same time. ...Read more