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Doctor insights on: Effects Of Bactrim On Oral Birth Control

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Do antibiotics make birth control ineffective?

Do antibiotics make birth control ineffective?

Yes: Women on contraceptives are advised to use an alternate method of birth control whenever they take antibiotics. They should use the alternate method throughout the course of antibiotics & through the end of current pack of pills. ...Read more

Dr. Jeff Livingston
2,319 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


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Can sulfa antibiotics ie. Bactrim (sulfamethoxazole and trimethoprim) affect oral birth control?

Can sulfa antibiotics ie. Bactrim (sulfamethoxazole and trimethoprim) affect oral birth control?

Yes: Any antibiotic can cause absorption issues with ocp's and render them ineffective. One should always ask about medications use with ocp's and the medication's effect on the ocp. If in doubt, use a back up method (comdon, foam, film etc) and talk to your pcp/gyn about it. Don't risk it! the price may be too high to pay! ...Read more

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Can the antibiotic "bactrim" affect my birth control pills in any way?

Can the antibiotic "bactrim" affect my birth control pills in any way?

Bactrim (sulfamethoxazole and trimethoprim): This medication may actually increase plasma levels of ethinyl estradiol, the medicine found in many contraceptives. ...Read more

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How long must you wait to have sex after taking an antibiotic (BACTRIM) while on the depo-provera birth control shot ?

How long must you wait to have sex after taking an antibiotic (BACTRIM) while on the depo-provera birth control shot ?

No wait time: Bactrim (sulfamethoxazole and trimethoprim) does not interfere with the drug in Depo-Provera so no wait time is necessary. You presumably have some infection which may be causing you some discomfort and for that reason you should restrain your activities until you're feeling better. ...Read more

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Is it actually true that bactrim (sulfamethoxazole and trimethoprim) antibiotic will interfere with provera birth control pill?

Is it actually true that bactrim (sulfamethoxazole and trimethoprim) antibiotic will interfere with provera birth control pill?

YES: Any antibiotic can interfere with birth control. If you rely on birth control pills for preventing pregnancy then you should be aware that they are less effective by any dosing of an antibiotic. A treatment of pills for 10 days or even one IV dose can affect the bcp. You should use another form of birth control after receiving antibiotics. ...Read more

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What's the effect of bactrim on ocella (drospirenone and ethinyl estradiol) birth control?

What's the effect of bactrim on ocella (drospirenone and ethinyl estradiol) birth control?

Antibiotics: In general (and Bactrim (sulfamethoxazole and trimethoprim) is one) interfere with birth control absorption and make them less effective and therefore increase potential risk for pregnancy. ...Read more

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Does Bactrim (sulfamethoxazole and trimethoprim) make the birth control tri Linyah ineffective?

Does Bactrim (sulfamethoxazole and trimethoprim) make the birth control tri Linyah ineffective?

No: Bactrim (sulfamethoxazole and trimethoprim) is an antibiotic, and the current thinking is that it does not decrease the effectiveness of birth control pills. The birth control pills should work with the same high level of effectiveness, with or without Bactrim (sulfamethoxazole and trimethoprim). ...Read more

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Will bactrim (sulfamethoxazole and trimethoprim) affect my birth control pills?

Will bactrim (sulfamethoxazole and trimethoprim) affect my birth control pills?

No: Only antibiotics for the treatment of tuberculosis like rifampin will affect the efficacy of your birth control pills. Continue taking your pills daily and don't miss any and your effectiveness should be >95% effective. ...Read more

Dr. Ralph Wharton
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


Dr. John Leander Po
1,117 doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more