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Doctor insights on: Does Plan B Always Work

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Does Plan B work well?

Does Plan B work well?

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

Plan B (Definition)

Levonorgestrel is a women's ...Read more


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Does Plan B work?

Does Plan B work?

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. ...Read more

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Does Plan B work after ovukation?

Does Plan B work after ovukation?

Yes: Plan b can be used after ovulation. It can be used at any time during your menstrual cycle. ...Read more

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What if Plan B does not work?

What if Plan B does not work?

It should not harm: fetus. Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes. ...Read more

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Dr. Alvin Lin Dr. Lin
2 doctors agreed:
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Does plan b not work for bigger girls?

Dr. Alvin Lin Dr. Lin
2 doctors agreed:

How big is big?: All emergency contraceptive pills are less effective in obese women, those w/BMI greater than 30 (http://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm). Check http://ec.princeton.edu/questions/ecobesity.html, http://www.npr.org/templates/story/story.php?storyId=247392818, http://www.npr.org/blogs/health/2013/11/26/247226093/emergency-contraceptive-pill-might-be-ineffective-for-obese ...Read more

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How does plan b work when you're ovulating? 

PLAN B: hello~ its a higher dose of estrogen and this makes the lining of the uterus (endometrium) to get thicker than it would w'out it and that causes it to run out of blood supply to sustain it and it sloughs off ( ie;menstruation) and bonus is that if you had an available egg and an available sperm and conception occurred, the fertilzed egg cannot implant, it is then lost in the menstrual effluent ...Read more

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Does taking Plan B work if ur breastfeeding?

Plan B can: Work while breast feeding. (i can not tell you if there is any transfer to baby). ...Read more

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Does Plan B still work before unprotected sex?

Does Plan B still work before unprotected sex?

Depends: If you took it and shortly thereafter had unprotected sex it would likely work the same way. However, i wouldn't suggest planning unprotected sex. Plan b is not a perfect method of pregnancy prevention. That's why we call it "emergency contraception" and not just in case contraception. ...Read more

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How do plan B pills work?

Hi dose BCPs: They are basically high dose BCPs which make the uterine wall a hostile environment for a potentially newly fertilized egg and so it cannot implant itself and grow and so it just flows out with ensuing menses. ...Read more

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Does Plan B work when you are most fertile?

Plan B: Plan b works after unprotected intercourse so yes. ...Read more

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Why Plan B doesn't work during ovulation days?

Why Plan B doesn't work during ovulation days?

It is effective: during that time. It can be taken at any time during a woman's cycle. Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes. ...Read more

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I took 4 Plan B pills. Will this make it work better?

Unfortunately not: Plan b is intended to be taken once within 72 hours of unprotected sex. The timing is actually the most important thing. The amount of hormone in the pill is designed for use as emergency contraception and is just right. So the earlier you take it after unprotected sex, the more likely you are to significantly reduce your chance of getting pregnant. ...Read more

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Dr. Joseph Oh Dr. Oh
3 doctors agreed:
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Does Plan B work if taken before unprotected sex?

Dr. Joseph Oh Dr. Oh
3 doctors agreed:
Does Plan B work if taken before unprotected sex?

Bad idea: Plan B works by blocking ovulation; once it wears off ovulation continues. If you have sex, the sperm sticks around, and once the pill wears off, the egg will come into contact with them once released (you actually increase your chances of getting pregnant). To really prevent pregnancy, best to use condoms and a second method such as BC pills every single time (why take a chance?) ...Read more

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Is Plan B harmful to the baby if Plan B doesn't work and you end up pregnant?

Is Plan B harmful to the baby if Plan B doesn't work and you end up pregnant?

Plan B: If you get pregnant after using plan b, the conceptus isn't harmed. The medication is not known to cause anomalies. ...Read more

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What is Plan B pills and how does it work?

Pregnancy prevention: Plan b is used for unprotected sex with contraceptive failure (to prevent pregnancy). It works using female hormones. ...Read more

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Does Plan B work if you are ovulating?

Yes: Plan b can be used at any point during the menstrual cycle. ...Read more

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How long does the Plan B pill work for?

How long does the Plan B pill work for?

One event: It is designed to be used within 72 hours after sex for one event. It is not a routine form of contraception. ...Read more