U.S. doctors online nowAsk doctors free
TX
A female asked:

if i take sulfamethoxazole while on plan b does that make it less effective ?

1 doctor answer1 doctor weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Sounds ok: If a person has a good reason to take sulfamethoxazole, is not allergic to it, and is not having vomiting or diarrhea, the sulfamethoxazole should work just as well, whether or not Plan B is taken. Also, if she has a good reason to take Plan B, and is not having vomiting or diarrhea, the Plan B should work normally, regardless of her use of antibiotics. She should do a pregnancy test in 3 weeks.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

Related questions

A 21-year-old female asked:
1 doctor answer1 doctor weighed in
A 33-year-old member asked:
1 doctor answer2 doctors weighed in
A 16-year-old female asked:
1 doctor answer3 doctors weighed in
A 16-year-old female asked:
2 doctor answers7 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Aug 6, 2017

Disclaimer:

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.