Canton, TX
A 18-year-old female asked:
I am not on birth control now but i start next month. i am getting on antibiotics. how long until it is out of my system for birth control to work?
5 doctor answers • 5 doctors weighed in
Dr. Mihaela Marinanswered
Internal Medicine 30 years experience
Up to couple of days: If you finish your antibiotic treatment before you start taking birth control pills, will be no interference.
If you take antibiotics in the future, just count for not being protected until the following period and add other contraceptive methods.
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3.8k viewsReviewed >2 years ago
Dr. Adam Levyanswered
Obstetrics and Gynecology 39 years experience
More Important - BC: BC - birth control, will be important for you to use now, such as condoms and spermicide suppositories, until you complete first 2 weeks of your pills. Anytime you are on antibiotics, condoms are recommended since pill failure can occur. Continue taking your pills and use the condoms as long as you are taking the antibiotics. If they are long acting, then you may choose to extend condom use 2 days
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
Dr. Henry Jacobsanswered
Obstetrics and Gynecology 68 years experience
Pretty quick: i would think that 48 hours after completing antibiotics it would be ok to start BCP without being concerned
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
Dr. Robert Killiananswered
General Practice 30 years experience
Start on time: Start the birth control. You have to protect against pregnancy for a time after starting birth control anyway. Best to start birth control on time.
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
Dr. James Rochesteranswered
Family Medicine 28 years experience
Depends: If you are on pill and start abx as a general rule if you finish your antibiotic in the first or second week of your pill pack, you need additional protection until you finish that current pack. If you finish your abx in the 3rd or 4th week of your pill pack, you need additional protection until you finish the 2nd week of your next pill pack. Hope this helps. Dr R
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
Dr. Henry Jacobs commented
Obstetrics and Gynecology 68 years experience
interesting, but she is not on BCP now and won't be starting the pill for a month so irrelevant actually.
Aug 1, 2014
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Created for people with ongoing healthcare needs but benefits everyone.
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A 42-year-old member asked:
Can i get pregnant if i took amoxicillin and birth control and had sex on the second day of taking antibiotics?
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Created for people with ongoing healthcare needs but benefits everyone.
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A 21-year-old female asked:
Is it okay to use a tampon while I have a UTI? I just got my period as I had to stop taking my birth control in order for the UTI antibiotics (Nitrofurantoin) to work?
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Created for people with ongoing healthcare needs but benefits everyone.
Answered Dec 17, 2021
A 18-year-old female asked:
Took antibiotics during the first week of starting birth control, now on second pack am I protected?
Dr. Jeff Livingstonanswered
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Probably but: First you need to determine if your antibiotics actually affect your birth control at all. Contrary to popular belief most do not. You can see which a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
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Last updated Oct 4, 2016
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