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Does Sulfamethoxazole Interact With Methenamine?

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Posted on Tue, 19 Apr 2016
Question: I am on Methanamine Hipp to control uti's. Today I was diagnosed with a uti. This is the first one in over a year. I was prescribed sulfamethoxazole-Tmp ds. Reading info on methenamine hipp it says you shouldn't take them together. But I took on of the sulfa pills after taking the methenamine. Should I discontinue one or the other drug
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doctor
Answered by Dr. Muhammad Ahmad (1 hour later)
Brief Answer:
Interaction is severe and stopping the drug is advised.

Detailed Answer:
Hello,

Thanks for writing.

I am Dr.Muhammad Ahmad. I have read your question completely, i understand your concern and will try to help you in best way possible.

I have reviewed your drugs and their interactions are severe and dangerous It is advised to stop one of them. In my opinion methenamine can be stopped but I would suggest you to discuss this with your doctor and dont stop it by yourself.

Doctor knows your case well and he is gonna see you in follow up so it is always better to discuss your drugs with your doctor before stopping one. Till then you shouldn't take sulfa drug continue methenamine as you are taking it already for long.. Now drug is easy to stop as blood levels will be low.

It is advised to contact your doctor regarding this interaction.


I hope this answered your question, a
if you have more please feel free to ask.

Regrads.



Dr.Muhammad Ahmad.

M.B.B.S(Licensed Family Physician)
Note: For further follow up on related General & Family Physician Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Muhammad Ahmad

General & Family Physician

Practicing since :2012

Answered : 1308 Questions

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Does Sulfamethoxazole Interact With Methenamine?

Brief Answer: Interaction is severe and stopping the drug is advised. Detailed Answer: Hello, Thanks for writing. I am Dr.Muhammad Ahmad. I have read your question completely, i understand your concern and will try to help you in best way possible. I have reviewed your drugs and their interactions are severe and dangerous It is advised to stop one of them. In my opinion methenamine can be stopped but I would suggest you to discuss this with your doctor and dont stop it by yourself. Doctor knows your case well and he is gonna see you in follow up so it is always better to discuss your drugs with your doctor before stopping one. Till then you shouldn't take sulfa drug continue methenamine as you are taking it already for long.. Now drug is easy to stop as blood levels will be low. It is advised to contact your doctor regarding this interaction. I hope this answered your question, a if you have more please feel free to ask. Regrads. Dr.Muhammad Ahmad. M.B.B.S(Licensed Family Physician)