A member asked:

How long does it take for bactrim (sulfamethoxazole and trimethoprim) to leave your system?

A doctor has provided 1 answer
Dr. Michael Ein answered

Specializes in Infectious Disease

5 days: The half life of sulfa and trimethoprim vary from 10 to 20 hours. 5 half lives for almost complete elimination so 50 to 100 hours.

Answered 9/13/2018

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Can children take Bactrim (sulfamethoxazole and trimethoprim)?

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