Very allergic to keflex (hives, flushing, rash.) is z-pack safe? how about clindamycin?

Yes: Z-pack (azithromycin) and Clindamycin are not in the same category as keflex. These are safe alternatives to keflex.

Why: All antibiotics are not the same. They are prescribed for specific reasons and diseases. If you have been prescribed Keflex and you are allergic to cephalosporins, i would contact your doc immediately so he can switch it t.

Probably, but...: Keflex is a cephalosporin, and there's a cross-reactivity to penicillin based antibiotics. Zpack is erythromycin, and neither it nor Clindamycin are penicillin based antibiotics. No real concern of cross reactivity here, but, of course, a separate allergy could be present. Good luck.

FDA Efficacy&Safety: A principle roll of the fda, see http://www.Fda.Gov, is to evaluate pharmacology & clinical trials done by private companies to decide if product efficacy far outweighs problems. If spread not wide enough, no approval. Data summarized in document called "prescribing information" or pi. Look it up on net. For out of patent products, use rxlist.Com. However, for individual, always your own trial.

Yes: These are both different classes of antibiotics. But some people are allergic to multiple antibiotics.