Vomiting and Birth Control Pills

Will the effectiveness of my birth control pill be affected if I vomit?

It depends.

  • If you took your pill two hours or more before you vomited, it is unlikely that you will need a replacement pill.
  • If you vomit within two hours of taking your pill, you should consider that pill 'missed' and take another from a separate pack as soon as you can keep things down.
  • The risk of pregnancy increases if vomiting prevents your body from absorbing a high enough 'quota' of estrogen that month to prevent pregnancy. You may want to contact your health care provider anyway in case there are special instructions you need to follow.

If you vomit or have diarrhea due to illness or consumption of too much alcohol.

If you throw up or have diarrhea because you're sick or drank too much while you are taking an oral contraceptive, play it safe. This means you should use a back-up method, like condoms. Use this method of birth control for seven days after vomiting or diarrhea, even if you have not missed any pills.

If pills are missed due to vomiting bouts and a backup method is not used.

If you didn't use a back-up method and missed pills from vomiting them, emergency contraception can be used to prevent pregnancy. Although, if you've used this method before, be prepared for nausea and vomiting as side effects of this, too (we just can't win, can we? Except maybe in avoiding the one type of nausea we don't want — 'morning sickness'.)

If, like most women, you forget to take one of your contraceptive pills.

If you forget to take a pill, take it later in the day and then take another at bedtime, when you normally would take one, thus causing you to take two pills in one day (which is fine). Keep in mind, this also can make you feel a bit queasy.

Low dose pills like Alesse, Yaz, and Mircette, are just as effective as high dose pills for preventing pregnancy. However, missing a low dose pill puts you at greater risk of pregnancy than missing a high dose pill.

Crazy, isn't it? One of the side effects experienced by some women who take birth control pills is nausea and vomiting, (this side effect usually goes away after the first few months of use) and if you DO suffer severe vomiting when on the pill, you've defeated the whole purpose of taking them in the first place! Taking your pill with food or taking it before bedtime may help to alleviate nausea.

Severe vomiting should be reported to a physician IMMEDIATELY (also, use a condom if you still feel like sex under these circumstances!)

Severe vomiting is not a normal side effect and should be checked out by a professional.

The contraceptive pill continues to be a popular choice though, because it is easy to use, convenient and is a reversible method of birth control.

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Comments 5 comments

glassvisage profile image

glassvisage 8 years ago from Northern California

Good, legitimate information that can really help women. Thanks!


Kimberly 6 years ago

This was very helpful, I just needed to know how long I'd need a back up if I can't keep a pill down. I've heard that if you can't keep your birth control pill down, you can take it vaginally and it can be absorbed that way . . ?


vanessa 6 years ago

the instruction I was given if that situation happens put it under your tongue n wait for it to dissolve


Renegade 5 years ago

Severe vomiting.. How severe is severe, exactly? Heh. I take birth control, and I've been taking it for about two months. I never puke when I take my pills on time, but if I happen to miss one and end up taking two in one day ( I take one in the morning and one in the evening), I wake up VERY early the next morning and spend fiveish hours vomiting every thirty minutes. Which is a step up, because when I tried taking two pills at one time, my vomiting was way worse. I don't know. Maybe I should just take my pills on time.


Sheepehix 4 years ago

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