Am I Allergic to Amoxicillin If I Am Allergic to Penicillin?

An allergy is when your immune system mistakenly identifies an incoming chemical structure as harmful, so if you are allergic to Penicillin, it is natural to wonder if you will have similar reactions with Amoxicillin. In short, the answer is yes, it is safe to assume that Amoxicillin will trigger an allergic reaction because they both belong to the same family of medicines and have a very close chemical makeup.

Amoxicillin is classified as an aminopenicillin, which means it is a more advanced version of regular Penicillin, designed to tackle a wider range of bacteria. If you ingest Amoxicillin while having an allergy, your body will very likely trigger a reaction, and therefore, medical guidelines are to completely avoid this medication to prevent any adverse reaction.  

Solutions To Your Allergy

So, what do you do if you are allergic to Penicillin and Amoxicillin but need to take medication for a bacterial infection? The good news is that there are alternative antibiotics you can safely take, which are a different class of medicine altogether. Examples of these are macrolides and lincosamides, both of which do not share the same chemical structure and are completely safe. It is important not to experiment with Amoxicillin if you suspect that you may be allergic.

If you are interested in permanently clearing up your allergy, there are potential options for this, too. The first step would be to consult either an immunologist or allergist, who are trained to administer skin-patch tests that visibly display any allergy on your skin’s surface. Alternatively, there is an oral provocation test, where you are tested with tiny safe amounts of the medication to observe any micro reactions.

If you are uncertain about your allergy status or need advice on alternative treatments, the PharmaBee team is always available to help you navigate your prescriptions safely.