What meds can i take if i'm allergic to penicillin?

Anything not PCN ok.: Actually the incidence of a true IgE mediated reaction to Penicillin is less than 1% of the population at large. Thankfully there are many alternatives to penicillin for treating susceptible organisms. The big question that occurs almost always is can a penicillin allergic pt be given a cephalosporin . The true incidence of real crossover sensitivity to "cephalo's" is anywhere from 0.5% to 10%