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Doctor insights on: What If Im Severely Allergic To Penicillin

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What happens if I'm allergic to clindymicin am I allergic to cefdinir?

What happens if I'm allergic to clindymicin am I allergic to cefdinir?

No: Cefdinir is a third generation cephalosporin and clindamycin is a macrolide derivative. They are unrelated so you should not be allergic to cefdinir. ...Read more

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If I am allergic to amoxycillin will i be allergic to keflex?

If I am allergic to amoxycillin will i be allergic to keflex?

Unlikely: Amoxicillin is in the penicillin family; Keflex is a cephalosporin. Only about 10% of penicillin-allergic people react to cephalosporins, so it is generally ok to take a cephalosporin unless there has been a life-threatening allergic reaction to a penicillin. You should discuss with your physician whether a cephalosporin is appropriate for you. ...Read more

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What happens if I am allergic to bees, will i be allergic to tarantulas?

What happens if I am allergic to bees, will i be allergic to tarantulas?

No crossover: There is no relationship between these two sensitivities so you need not fear tarantulas excessively. You could of course be allergic to both independently but one does not predict the other. ...Read more

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What happens if allergic to pencillin, are you allergic to amoxicillin?

What happens if allergic to pencillin, are you allergic to amoxicillin?

Yes: As background, 90% of patients labelled as penicillin allergic are not. If one is labelled as pcn allergic then they should have pcn skin testing done to confirm or refute this diagnosis. In general if one is confirmed to be penicillin allergic then they are at greater risk than the general population to react to Amoxicillin thus they should avoid Amoxicillin as well. ...Read more

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If im allergic to penicillin does ir mean im allergic to amoxicillin as well?

Dr. Tony Ho Dr. Ho
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If im allergic to  penicillin does ir mean im allergic to amoxicillin as well?

Likely: Both are very closely related, so that if you are truly allergic to penicillin, i would recommend avoiding any contact with amoxicillin, yes. ...Read more

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What happens if I'm allergic to clindamycin will I be allergic to clarithromycin?

What happens if I'm allergic to clindamycin will I be allergic to clarithromycin?

Not Necessarily: Your allergist can test this for you. Usually people who are allergic to erythromycin have cross reactivity with azithromycin, clarithromycin. Issues with Clindamycin are less easy to predict. ...Read more

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If I got an allergic reaction from cephalexin, does that mean I am also allergic to penicillin?

If I got an allergic reaction from cephalexin, does that mean I am also allergic to penicillin?

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. ...Read more

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What else can I take if i'm allergic to penicillin and sulfa neosporin?

What else can I take if i'm allergic to penicillin and sulfa neosporin?

Depends what for: For instance cipro, (ciprofloxacin) zithromycin ; Nitrofurantoin would both be quite safe. Cephalosporins, such as Keflex or suprax are probably safe, but there is some cross-reactivity at times between penillins ; cephalosporins. Trimthoprim without sulfa would also be ok but bacrtim or septra because they contain sulfa. ...Read more

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I am allergic to penicillin notatum, would I be allergic to penicillin or amoxicillin?

I am allergic to penicillin notatum, would I be allergic to penicillin or amoxicillin?

Probably not: Penicillium notatum is a mold/fungi that if allergic, can cause symptoms like runny nose, sneezing, nasal congestion, worsening of asthma symptoms, etc. Penicillin antibiotics do not contain enough of the mold, and when ingested, would be a different reaction. To be safe, you could get tested for penicillin allergy with an allergist. ...Read more

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What happens if I am allergic to hydrocodone will i be allergic to all opiates?

What happens if I am allergic to hydrocodone will i be allergic to all opiates?

Not enough info: In order to answer this question one needs more information. If you developed only itching from this medicine, this can be a side effect to the narcotic. This is not a true allergy. All narcotics can cause release of histamine which can give you itching, and hives etc... Hydrocodone is synthetic so actually has less risk for this. Some people need to take Benadryl (diphenhydramine) with it. Allergist may help. ...Read more

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What happens if I am severely allergic to salicylic acid(on the skin) am I allergic to aspirin?

What happens if I am severely allergic to salicylic acid(on the skin) am I allergic to aspirin?

Not Necessarily: You could have had a contact dermatitis from the salicylic acid and still be able to take aspirin. You may need to have an aspirin challenge under the supervision of a physician to see if you react or not. You might also want to have a patch test that includes salicylic acid to verify for sure if that caused the reactions. ...Read more

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What to do if I have strept throat, and im allergic to penicillin, can take amoxicillin or keflex instead?

No : Amoxicillin is within penicillin class and the risk of having a reaction is significant so it should be avoided. There is controversy about the risk of cross reaction between class of antibiotics penicillin and cephalosporin (keflex). It appears the risk is low (but not 0). If penicillin allergy was years ago, skin testing for penicillin can help know if it is still there. Allergist can help. ...Read more

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If I am allergic to clindamycin what is an alternative antibiotic?

If I am allergic to clindamycin what is an alternative antibiotic?

Several: Depends on what's being treated, your doctor(s) then would decide accordingly. Yet to decipher your symptoms and define if you are really allergic to clindamycin, and not just a side effect, best wishes ...Read more

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What do you suggest if my mother is also allergic to antibiotics including sulfa drugs. she got hives really bad from e-mycin. i?

What do you suggest if my mother is also allergic to antibiotics including sulfa drugs. she got hives really bad from e-mycin. i?

Question Not Clear: If your question is are you allergic to sulfa because your mother is, unless you have had a reaction to sulfa, the answer is no. You do not inherit specific allergies from your parents, only the non-specific global tendency to develop allergies. ...Read more

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What would happen if I were to ingest Ceclor if I am allergic to it?

What would happen if I were to ingest Ceclor if I am allergic to it?

Rash: The most likely reaction to Ceclor is what is commonly called a "serum sickness" type reaction characterized by rash, fever, joint pain and occasionally fever. ...Read more

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Is it possible to be allergic to augmentin (amoxicillin and clavulanate) if I am not allergic to amoxicillin?

Yes: Augmentin (amoxicillin and clavulanate) is actually two different medicines, so you could have a reaction to the second component of Augmentin (amoxicillin and clavulanate), (Clavulanic Acid) ...Read more