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Doctor insights on: Plan B Failure Rate

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Success rate of taking Plan B within 41 hours after condom broke?

High: Pregnancy rate is ~10% if taken within 72 hours. There may be irregular bleeding for up to 2 months after taking. The pattern doesn't mean anything about whether the medication worked or not. So run a home urine pregnancy test 14 days after the accident using first urine of the morning. If it's negative, you're not pregnant. Consider a more reliable form of contraception for the future. ...Read more

Plan B (Definition)

Levonorgestrel is a women's ...Read more


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What percentage of failure does Plan B have?

What percentage of failure does Plan B have?

Plan B: 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 experienced condom failure with my wife 2 days in a row and we've used plan b within an hour of each failure. Is this safe and will it be effective?

I experienced condom failure with my wife 2 days in a row and we've used plan b within an hour of each failure. Is this safe and will it be effective?

Likely will work: Plan B can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. One should check a home pregnancy test about 3 weeks after sex, because Plan B works most of the time, but not all the time. ...Read more

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Dark dark bleeding 3 days after taking Plan B on last day of my cycle after contraception failure.. worried!

Dark dark bleeding 3 days after taking Plan B on last day of my cycle after contraception failure.. worried!

Normal: The bleeding is to be expected. If you took the plan B promptly as the directions advise, you should be fine. You do need to consider a more reliable method of contraception to save yourself the worry in the future. Good luck. ...Read more

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Is it normal to have mild cramping & nausea for 5 days, that began a couple hrs after taking Plan b? Took it 3 hrs after condom failure. I have not go

Is it normal to have mild cramping & nausea for 5 days, that began a couple hrs after taking Plan b? Took it 3 hrs after condom failure. I have not go

This could be due to: Plan B. Potential side effects w emergency contraception include: menstrual flow changes (spotting, bleeding, early or late period), nausea, vomiting, dizziness, fatigue, headache, breast tenderness & abdominal pain or cramps. Most often the nausea/ cramps would subside quickly. Take pregnancy test & notify dr if your period is 7 or > days late. ...Read more

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Had a contraception failure 2days ago and want to use Plan B.spotting since 2days (never had before)LMD is 29th April. Is it my period? Shld I use planB

Had a contraception failure 2days ago and want to use Plan B.spotting since 2days (never had before)LMD is 29th April. Is it my period? Shld I use planB

If not wanting preg.: If the next period is due around May 29th, then this time of month is actually mid-cycle (around ovulation). If one truly doesn't want to become pregnant, using Plan B is pretty effective and can be taken as soon as possible. One can call her Ob-Gyn doctor if having questions or concerns. ...Read more

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I am on regular birth control pills. I took Plan B the first day of my placebo week because of condom failure. Could Plan B make me miss my period?

I am on regular birth control pills. I took Plan B the first day of my placebo week because of condom failure. Could Plan B make me miss my period?

Maybe: If you were taking the birth control pills regularly it is very unlikely that you would become pregnant...Even with a broken condom. The condom is helping very little with your contraception but using a condom can be a good way to prevent some stds, not all. Plan b could alter your period. Just begin your next pill cycle on the correct day. Get a pregnancy test done to prove you are not pregnant. ...Read more

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Is there any foods that should be avoided to prevent the effects of the Plan B one step pill from working? (i.E. Dairy)

Is there any foods that should be avoided to prevent the effects of the Plan B one step pill from working? (i.E. Dairy)

No: Fortunately there are no foods that will decrease the efficacy of Plan B from working, I don't think any medications interfere with it's effectiveness either. ...Read more

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Is Plan B safe?

Is Plan B safe?

Yes: But is does have potential side effects. Potential side effects w emergency contraception include: menstrual flow changes (spotting, bleeding, early or late period), nausea, vomiting, dizziness, fatigue, headache, breast tenderness & abdominal pain or cramps. Take pregnancy test & notify dr if your period is 7 or > days late.


...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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How safe is plan b?

How safe is plan b?

Safe but w possible: Side effects: potential side effects w emergency contraception: tender breasts; menstrual flow changes (spotting, bleeding, early or late period); loose stools; dizziness; headache; nausea/ vomiting; abdominal pain / cramping or fatigue. For chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Take pregnancy test ; notify dr if your period is 7 or > days late. ...Read more

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Is Plan B effective?

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

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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

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Do Plan B really work?

Yes: Plan b is there, of course, because the better method plan a is not present.
Plan b does work. The sooner it's taken the better it works. The effectiveness gradually decreases over the next 5 days
a newer emergency contraception called Ella (ulipristal acetate) has more even effectiveness over the next 5 days. ...Read more

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What is Plan B one step?

What is Plan B one step?

Plan B: Is like an alternative to 'Plan A". In other words if you are using one form of birth control but it fails, you can then use Plan B as part of a back up plan. It is an emergency contraceptive. ...Read more

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How effective is plan b?

Plan B: 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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Where can you buy plan b?

Drug store off the: Shelf - show ID at register (must be 15 years old to buy). ...Read more

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How effective is Plan B?

Very effective: If taken within 48-72 hrs of intercourse it is more than 90% effective ...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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What does taking Plan B do?

What does taking Plan B do?

3 mechanisms of: Action. “Plan B temporary stops the release of an egg from an ovary. Prevents Fertilization. Prevents a fertilized egg from attaching to the uterus.” REF: http://planb. Ca/how-it-works. Html ...Read more

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Wht do u think bout plan b?

Thoughts: It can be used effectively if another form of birthcontrol fails. It should not be used for regular protection. ...Read more

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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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Can my weight affect plan b?

Can my weight affect plan b?

Maybe if: Morbidly obese. Plan B may require a higher dose with obese women. REF: See: http://www. Npr. Org/sections/health-shots/2013/11/26/247226093/emergency-contraceptive-pill-might-be-ineffective-for-obese ...Read more

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Does Plan B work 4 days later?

Highly Diminished: The optimum efficacy of Plan B accrues if it is taken within 72 hours post-coitus with higher efficacy the closer it is taken to the time of coitus.

4 days post-coitus is pushing it. See your pcp or ob/gyn to explore your options. Good luck! ...Read more

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How often can you take plan b?

Only when the: contraception you are using fails. It should not be used as a substitute for birth control pills. ...Read more

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When should someone take plan b?

Within 72 hours of: Failed contraception. 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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Can I repeat Plan B in two days?

You could: But the efficacy data (as in how effective it will be) isn't there are studies with repeated use aren't available. If you need to use emergency contraception with any frequency you need to review with your doctor the possibility of more long term contraception. ...Read more