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A member asked:
Does being allergic to one antibiotic make you more likely to being allergic to the others, even the ones in totally different classes?
5 doctors weighed in across 3 answers
Yes: There is evidence that when you are allergic to one antibiotic you are somewhat more likely to become allergic to another even if they are not structurally related.
Answered 9/15/2013
4.9k views
Yes and no: If you are allergic to an antibiotic of the penicillin class of drugs then you have a 15% chance of being allergic to a cephalosporin class antibiotic. Otherwise there is no increase in risk of allergy to other antibiotics. Having said that however, there are people who were simply allergic to many medications. If you are ever worried about that you can ask your doctor for an Epipen (epinephrine) and keep it on hand whenever you are prescribed an antibiotic. Your doctor can prescribethat and discuss that with you.
Answered 6/25/2014
4.9k views
Sometimes: For example if allergic to penicillin, you may also be allergic to keflex.. You may however be able to tolerate other classes of anti-biotics without a problem.
Answered 9/15/2013
4.9k views
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