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Can bactrim and keflex be taken together?

Answers (5)


4 Mar 2011


Interactions between your selected drugs

No results found - however, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist.

Other drugs that your selected drugs interact with

Bactrim (sulfamethoxazole/trimethoprim) interacts with more than 200 other drugs.
Keflex (cephalexin) interacts with more than 10 other drugs.

Interactions between your selected drugs and food

No results found - however, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist.,564-285

Take care.-

4 Mar 2011

drugs such as Bactrim and Cipro and drugs such other antibiotics can be taken together, sometimes one won't kill the same bacteria and so therefore it takes another kind so usually (with a few exceptions) this can be done safely,

21 Nov 2014

The two should usually not be given together from the microbiology standpoint. Keflex works best with actively growing bacteria since it works on the cell wall, but Bactrim slows the growth of the bacteria so the Keflex does not work as well. Same thing would be said of a Keflex and Doxycycline combo which is usually not given together.

21 Jun 2011

I was recently diagnosed with Cellulitis and given Keflex and Bactrim and told by the E.R. nurse to take them together, however, she was wrong. They cancelled each other out and made me sick as hell. I didn't start getting better until I took them 1/2 hour to an hour apart. Another nurse corrected me on that and said that those 2 drugs should never be taken at the exact same time. I'm glad I found out otherwise my cellulitis might not be getting better at all. I should have asked the pharmacist instead of trusting the E.R. nurse. Hope this helps.

30 Jun 2015

I stubbed my toe in the Grand Canyon and before I could get to a doctor it was really infected I took Bactrim and Keflex together knocked it out in a week

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