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Doctor insights on: Does One Night Of Diarrhea Affect The Effectiveness Of Your Birth Control

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Dr. Oscar Novick
2,169 Doctors shared insights

Loose Stools (Definition)

Loose stools is a symptom in which a person's stool (poop) does not hold its shape after it goes into the toilet. Instead of remaining a shaped piece of poop, the poop spreads out in the toilet bowl water. Very loose stool is called diarrhea. Loose stool can be caused by infections, certain foods or drinks, ...Read more


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Should one incident of diarrhea (due to spoiled food) 3 hours after taking your birth control pill lower your pill's effectiveness?

Should one incident of diarrhea (due to spoiled food) 3 hours after taking your birth control pill lower your pill's effectiveness?

No, that should not: Affect your pill's effectiveness. If you vomited shortly after taking the pill, you may not have absorbed enough of it to be effective. If that is not the case, you don't need to worry. Feel better soon!

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Do I need to worry about the effectiveness of my birth control pills if I had diarrhea within 1 hour after taking a pill? Should I take another one?

No: Even with diarrhea, the birth control pills will be effective. You do not need repeat them for coverage. Just continue as prescribed and if new symptoms occur, i.e. emesis, fever or other issues, get back to us with a virtual appt with Health tap.

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Do I need to worry about the effectiveness of my birth control pills if I had one light case of diarrhea 2h after taking it? Should I take another pil

Do I need to worry about the effectiveness of my birth control pills if I had one light case of diarrhea 2h after taking it? Should I take another pil

No, your fine: The absorption of the medicine takes place in stomach and upper intestinal tract, which would be totally unaffected by a bout of diarrhea. No need to throw your levels out of whack due to a little diarrhea. Even if you miss one entire pill, you are still considered to be protected.

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Can light diarrhea lower birth control effectiveness?

Can light diarrhea lower birth control effectiveness?

Unlikely: Diarrhea is a symptom of the lower gut, large intestine. The pill is absorbed in the small intestine. No need to worry.

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I took my birth control pill this evening at 8:30pm, and at 8:45pm I had diarrhea. Does having diarrhea decrease the effectiveness of the pill?

I took my birth control pill this evening at 8:30pm, and at 8:45pm I had diarrhea. Does having diarrhea decrease the effectiveness of the pill?

No: No The pill replaces the estrogen and progesterone amounts in your body. It then can fool the body into stopping ovulation. Loose stools will not change the absorption of the pill in your stomach. The pills effectiveness will not be changed by diarrhea as long as you take it daily according to label directions.

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I took my 1st birth control pill of the pack at 8:30 and at 8:45 I had diarrhea. Does having diarrhea decrease the effectiveness of the pill?

I took my 1st birth control pill of the pack at 8:30 and at 8:45 I had diarrhea. Does having diarrhea decrease the effectiveness of the pill?

No effect: Birth control pills generally aren't associated with diarrhea but if you have diarrhea, it's not going to affect their effectiveness.

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I had one time diarrhea 1, 5 hour after taking birth control pill during the first week. I had unprotected sex after that. Was my protection lowered?

I had one time diarrhea 1, 5 hour after taking birth control pill during the first week. I had unprotected sex after that. Was my protection lowered?

No Protection Yet: The diarrhea is not likely related to your pill taking. Assuming you have a normal gut, you are most likely absorbing the pill just fine. However, you can't depend on protection within the first seven days of taking the pill! You should be using backup method this month! The diarrhea did not lower your protection. However, your risk of pregnancy is high given the time frame!

Dr. Jeff Livingston
2,380 Doctors shared insights

Contraception (Definition)

Contraceptiion is a means of preventing conception (or fertilization). There are hormonal and non hormonal methods of preventing sperm and egg from meeting. Talk to your doctor or clinic about what options are best for you. There are short acting methods (condoms, pills, patch, ring) and long ...Read more


Dr. Corey Clay
4 Doctors shared insights

Birth Control (Definition)

Also known as contraception, birth control is a method to prevent pregnancy. Some methods of birth control include a vasectomy, tubal ligation, oral contraceptive pills, vaginal rings, hormone injections, condoms, diaphragms, sponges, ...Read more