Get Virtual Care
For Businesses
About Us
A member asked:
When you have taken bactrim, (sulfamethoxazole and trimethoprim) is there a chance that you would be immune to amoxicillin?
2 doctors weighed in across 2 answers
NO!: The two antibiotics belong to completely different "classes" of antibiotic! Dr Z
Answered 3/20/2016
3.3k views
Unclear Question: there is no relationship between Bactrim, (sulfamethoxazole and trimethoprim) a sulfa drug and Amoxicillin, a penicillin based drug. Your body does not become immune to either drug. You may develop an allergy, but they are not cross reactive. Bacteria may develop resistance, which you could call immunity, to an antibiotic. Both these drugs are antibiotics. Whether bacteria become resistant has nothing to do with you.
Answered 9/16/2015
3.3k views
Related Questions
A member asked:
Does bactrim (sulfamethoxazole and trimethoprim) increase chances of getting pregnant if not on birth control?
A doctor has provided 1 answer
A member asked:
I took bactrim (sulfamethoxazole and trimethoprim) once literally one pill while on birth control and had unprotected sex that day what are the chances of me getting pregnant?
A doctor has provided 1 answer
A member asked:
Was given bactrim (sulfamethoxazole and trimethoprim) for sweat gland infection in arm pit two days ago. chance I can get aseptic meningitis or bad reaction? Please reply
A doctor has provided 1 answer
A member asked:
When I seat in a chair I feel gives me more desires to urinate and I m taken bactrim (sulfamethoxazole and trimethoprim) jus for 4 days now.?
7 doctors weighed in across 3 answers
People also searched for:
I have proteus mirabilis. Was given bactrim (sulfamethoxazole and trimethoprim) but i'm allergic to sulfa. So was given amoxcillin 500mg twice a day for 5 days. Is this effective?
Can I effectively take Bactrim (sulfamethoxazole and trimethoprim) for staph and Amoxicillan for sinus infection at the same time?
Will taking bactrim (sulfamethoxazole and trimethoprim) suspension for 10days for a UTI negatively affect my immune system or the good bacteria in my gut? I am a 19yo male
Im extremely allergic to bactrim (sulfamethoxazole and trimethoprim). My husband is not. Our two sons are both allergic to Bactrim (sulfamethoxazole and trimethoprim) too. What are the chances our daughter is allergic too?
If I am on the antiobiotic Bactrim, (sulfamethoxazole and trimethoprim) and am only on my first week of pills on my NEW pack, and had unprotected sex what are my chances of pregnancy?
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
Download HealthTap
Video visit and message your doctor
