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A 24-year-old female asked:

If ur on trimethoprim to prevent uti's and go on senna tablets can the senna counteract the trimethoprim?

2 doctor answers3 doctors weighed in
Dr. James Lin
A Verified Doctoranswered
Urology 52 years experience
Here are some ...: There has been no known studies to address the possible interaction between Trimethoprim and Senna. But, known to most Senna users, Senna is not recommended for regular use -
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Michael Finkelstein
Internal Medicine 38 years experience
No it should: not affect the bactrim (sulfamethoxazole and trimethoprim) at all
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jan 28, 2022

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