7 doctors weighed in:

I'm allergic to penicillin. Am I also allergic to penicillin derived antibiotics?

7 doctors weighed in
Dr. Maziar Rezvani
Internal Medicine - Allergy & Immunology
3 doctors agree

In brief: Maybe

Penicillin allergy is usually secondary to either the beta-lactam components or the minor determinants.
If you are found to be allergic (via skin testing) to the beta-lactam component then you are at risk for sensitization to all beta-lactam medications, including cephalosporins. Fortunately in the majority of people, this is not the case. You should consult with your local allergy specialist.

In brief: Maybe

Penicillin allergy is usually secondary to either the beta-lactam components or the minor determinants.
If you are found to be allergic (via skin testing) to the beta-lactam component then you are at risk for sensitization to all beta-lactam medications, including cephalosporins. Fortunately in the majority of people, this is not the case. You should consult with your local allergy specialist.
Dr. Maziar Rezvani
Dr. Maziar Rezvani
Thank
Dr. Francine Yep
Family Medicine
2 doctors agree

In brief: Yes

Good (and important) question.
If you're allergic to penicillin, then you should not take its cousins like Amoxicillin and dicloxacillin. There's a certain amount of cross-allergies to the cephalosporin family too.

In brief: Yes

Good (and important) question.
If you're allergic to penicillin, then you should not take its cousins like Amoxicillin and dicloxacillin. There's a certain amount of cross-allergies to the cephalosporin family too.
Dr. Francine Yep
Dr. Francine Yep
Thank
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