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A member asked:
If i got an allergic reaction from cephalexin, does that mean i am also allergic to penicillin?
A doctor has provided 1 answer
No: There is indeed crossreactivity, but: -if you are allergic to cephalosporins like cephalexin, and have had penicillin with no problem in the past, most patients can continue taking penicillin without problems. -if you have not had penicillin since this reaction to cephalexin, you should see a physician who could to test you to penicillin, ideally an allergist.
Answered 11/22/2013
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