A 27-year-old female asked:
Been taking keflex 500mg 4 times daily for sinus infection. have no symptoms other than low grade fever. how or when will i know if its going to work?
2 doctor answers • 4 doctors weighed in
A Verified Doctoranswered
Depends: Keflex is a cephalosporin type antibiotic, which is rather broad spectrum. It can be bacteriostatic (knocks them down) or bacteriocidal (kills them-bacteria). I do not know how long you have been taking it, but a full course of 7 days needs to be taken. If not better by then, a culture and sensitivity test should be done to find the appropriate drug for a full cure.
5.4k viewsReviewed >2 years ago
Infectious Disease 48 years experience
5k viewsReviewed >2 years ago
Last updated Mar 19, 2016
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