A member asked:

I have been taking doxycycline for 5 days for sinusitis and i feel no better. should there have been a significant effect by now?

A doctor has provided 1 answer
Dr. Stevan Cordas answered

Specializes in Internal Medicine

Doxy: Yes, it is an older drug and some bacteria have built a resistance to it.D.

Answered 1/22/2015

5.4k views

Thank

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