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A member asked:
How long does smz/tmp stay active in your system after you stop taking it?
A doctor has provided 1 answer
About 50 hours: Approx 95% of most drugs are cleared from your system after about 5 half lives. The half life of SMZ/TMP is about 10 hours. So about 50 hours after your last dose, 95% should be out of your system. Hope this helps. Best of luck. Dr R
Answered 2/5/2020
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