2 doctors weighed in:

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

2 doctors weighed in
Dr. Michael Ein
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. Michael Ein
Dr. Michael Ein
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