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A 27-year-old female asked:

I'm taking keflex 500 mg twice a day for 10 days to treat a sinus infection. will this help and is this enough?

2 doctor answers3 doctors weighed in
Dr. Susan Rhoads
Family Medicine 38 years experience
It could be.: It might. I use a higher dose, but some docs don't. If you have seen no improvement at all (even just a decrease in color of mucus) after 5 days, call MD and discuss. Keflex can help many causes of sinusitis, but not all.
Dr. Tarek Hamid
Dentistry 9 years experience
It should be enough: You can upgrade dosage to three times a day ( every eight hours) by day three if you don't see improvement.

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Last updated Jul 8, 2018

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