Get Virtual Care
For Businesses
About Us
A member asked:
On cephalexin because of infection. will this lessen the effectiveness of my birth control? had unprotected sex. should i be worried?
A doctor has provided 1 answer
Should be ok: The current thinking is that except for rifampin, other commonly-used antibiotics do not alter the effectiveness of birth control pills. This is also presuming a person is not sick with vomiting or diarrhea, or some other condition that decreases the absorption of a swallowed birth control pill. One can look up: http://www.ncbi.nlm.nih.gov/pubmed/12063491
Answered 2/1/2016
1.7k views
Thank
Related Questions
A member asked:
I am suffering from skin infection in armpit for a week and having keflex 500mg for the a week. It did reduce my pain but not completely and it did not break out instead it is still there. Most badly, Another infection started in the other arm pit. ?
2 doctors weighed in across 2 answers
A member asked:
Does Cephalexin Antibiotic interfere with birth control (Kurvelo)? My pharmacist said no, but Im going to ask my doctor. Should I be concerned?
A doctor has provided 1 answer
A member asked:
I am taking Gianvi(birth control generic for yaz). Will Cipro, (ciprofloxacin) Cephalexin, or a zpack effect my birth control?
6 doctors weighed in across 2 answers
A member asked:
Does the antibiotic cephalexin make birth control pills less effective?
A doctor has provided 1 answer
A member asked:
I had intercourse without a condom during ovulation did the cephalexin cancel out my birth control pills?
A doctor has provided 1 answer
People also searched for:
I was perscribed Cephalexin for a uti and fluconazole for a yeast infection. Will these interfere with my tri-sprintec birth control?
I take 250mg of Cephalexin daily as a suppressant for chronic UTIs. Will this dosage of antibiotics reduce the effectiveness of my birth control?
I am on birth control (Yazmin) and i toke Keflex. I had unprottected sex (without ejaculation) 2 days after i finished the antibiotic. Im pregnant?
Does alcohol lessen the effectiveness of sprintec birth control? And Do I need Plan B after unprotected sex and a little alcohol?
I think I have a sinus infection, will cephalexin antibiotics make my birth control less effective?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
