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Doctor insights on: If I Am Allergic To Penicillin Can I Take Keflex

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Allergic to penicillin can I take keflex?

Likely, not certain: The majority of people who are told they are allergic to penicillin are not actually so (they get rashes for other reasons, e.g.). Of those that are allergic, about 70% or more will lose the allergy after about 10 years. If you are still allergic, there is about a 10% chance of cross-reaction to 1st-gen cephalosporins like keflex. An allergist can perform testing to judge your risk for a reaction. ...Read more

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I'm allergic to penicillin, can I take keflex?

I'm allergic to penicillin, can I take keflex?

Maybe: Penicillins (like amoxil) & cephalosporins (like keflex) are both beta-lactam antibiotics named because of their ringed chemical structure. Allergy to penicillins is sometimes directed against this ring, and an allergic reaction may also occur if a similar antibiotic is taken. It is estimated that about 10% of penicillin-allergic patients are also allergic to cephalosporins like keflex. ...Read more

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If I'm allergic to penicillin is it safe to take keflex pulvales?

If I'm allergic to penicillin is it safe to take keflex pulvales?

No: If you are truly allergic to penicillin, you should avoid all penicillin derivatives and the first generation cephalosporins. Keflex is a first gen. Cephalosporin and may cross react with penicillin. See a board certified allergist to help you determine if penicillin is a true allergy for you. ...Read more

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Is it a bad idea for someone allergic to penicillin safely take keflex, a cephalosporin?

Yes: Cephalexin (keflex) is a first generation cephalosporin and a very close cousin to penicillin. Though it is not 100% true that all penicillin allergic individuals are also allergic to cephalexin, there is a high likelihood of that happening. ...Read more

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I m allergic to penicillin keflex azithromiacin my daughter has scarlet fever and I m worried about what I can take if I get it?

I m allergic to penicillin keflex azithromiacin my daughter has scarlet fever and I m worried about what I can take if I get it?

Don't panic: Scarlet fever is an acute febrile illness, primarily affecting children, caused by group a beta-hemolytic streptococci. Clinical manifestations include fever, sore throat, and fine sand-paper like rash caused by a toxin produced by the strep. Although penicillins are antibiotics of choice, there are other antibiotics that are effective. Your doctor will know. A throat culture is helpful. ...Read more

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I am allergic to keflex & penicillin. Is neosporin still ok to use on my skin?

Neosporin: People have a tendency to assume that neosporin does not cause side effects because it is a widely available and frequently used nonprescription product. However, this is simply not the case. In fact, many healthcare providers now recommend that people avoid products with neomycin (including neosporin), as neomycin is more likely than most other antibiotics to cause allergic reactions. ...Read more

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Always fine w penicillin, but had extreme allergic reaction reaction to keflex! Does that mean I am now also allergic to penicillin for sure?

Always fine w penicillin, but had extreme allergic reaction reaction to keflex! Does that mean I am now also allergic to penicillin for sure?

Not necessarily: While penicillin and Cephalexin (keflex) share some features, allergy to one does not necessarily to one mean that you are allergic to the other. See a board-certified allergist/immunologist to sort things out. ...Read more

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Was recently dx'd with lupus & am allergic to Keflex. Heard that lupus patients tend to have strong reactions to penicillin, should I avoid penicilin?

Was recently dx'd with lupus & am allergic to Keflex. Heard that lupus patients tend to have strong reactions to penicillin, should I avoid penicilin?

Avoid penicillin: I am not aware of the connection between allergy to PCN and lupus, You need to avoid PCN if you are allergic to keflex. ...Read more

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I got allergy from penicillin 45 yrs ago when I was 8 yrs, since then I have not used it. Now due to UTI I am given keflex. Shd I take it. Advice plz?

I got allergy from penicillin 45 yrs ago when I was 8 yrs, since then I have not used it. Now due to UTI I am given keflex. Shd I take it. Advice plz?

Usually okay.: We were taught for years that there is about a 10% risk of being allergic to cephalosporins (like Keflex) in people who were allergic to drugs in the penicillin family. Later research has said that is a myth, and there is less than a 1% risk depending on the type of cephalosporin. See http://www. Ncbi. Nlm. Nih. Gov/pubmed/21742459. Talk to your doctor about your fears, though. ...Read more

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I took Keflex and had hives all over my body, was told not to use Penicillin or Sporin dugs. Hives again from Neosporin, Can I take the Shingles Shot?

I took Keflex and had hives all over my body, was told not to use Penicillin or Sporin dugs. Hives again from Neosporin, Can I take the Shingles Shot?

Shingles shot: Reaction to antibiotics should not affect you getting the shingles vaccine. They are unrelated. However yes you could be allergic to the shingles vaccine but there is no way to know until you get it. The good news it is only a one time shot so you won't need boosters. ...Read more

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I read that the flu shot is made from antibiotics. Safe for people allergic to keflex and penicillin?

I read that the flu shot is made from antibiotics. Safe for people allergic to keflex and penicillin?

No/ Yes: Influenza vaccines are made with dead viral antigens or inactivated live virus. They are not made with antibiotics and can be given to anyone who is allergic to antibiotics. ...Read more

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Is erythromycin ointment safe for someone who is allergic to keflex/penicillin? Also, if using for eye infection/stye, do I apply it inside my eye?

Is erythromycin ointment safe for someone who is allergic to keflex/penicillin? Also, if using for eye infection/stye, do I apply it inside my eye?

Yes and probably: Erythromycin is a macrolide antibiotic. It is not related to the penecillins nor cephalosporins to which you had allergies. There should be no cross reactivity. The standard treatment for stye is heat and compression (squeezing) then surgical incision and drainage if initial therapy is unsuccessful. If a patient has an eye infection with discharge, the antibiotic ointment goes inside the eyelid. ...Read more

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ER doctor prescribed me Keflex for possible mastitis and UTI knowing I'm allergic to penicillin. I am on day 3 and have an itchy rash on arms and legs?

ER doctor prescribed me Keflex for possible mastitis and UTI knowing I'm allergic to penicillin. I am on day 3 and have an itchy rash on arms and legs?

Possibly allergic: Cephalexin (Keflex) and related antibiotics (the cephalosporin group) are chemically similar to penicillinl. Although penicillin allergic persons usually can take them without problem, occasional cross reactions occur -- i.e. you may be allergic to the cephalexin. Check with the doctor who prescribed it. ...Read more

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Is it possible for you to mix penicillin 500 mg with keflex 500 mgvk 500 mg with acetaminophen?

Is it possible for you to mix penicillin 500 mg with keflex 500 mgvk 500 mg with acetaminophen?

Possible.: Pcn and Keflex cover just about the same organisms. Can take them together but may not need them both. There is no significant interaction between the drugs or with acetaminophen. ...Read more

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Is it possible for you to take cephalexin if you r allergic to penicillins?

Is it possible for you to take cephalexin if you r allergic to penicillins?

Yes: Cross reactivity between the two classes are low so Cephalexin is not contraindicated in penicillin allergy patients. You should have your prescribing physician to follow you for any signs of reactions and get proper treatment. ...Read more

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My doc gave me keflex to take prior to an upcoming procedure but im alergic to penecilian (sp). Should I be concerned about a possible reaction?

My doc gave me keflex to take prior to an upcoming procedure but im alergic to penecilian (sp). Should I be concerned about a possible reaction?

Maybe: Reportedly about 10% of penicillin-allergic patients will also be allergic to Keflex or other cephalosporins. If you develop a rash or difficulty breathing on penicillin, you should probably ask your doc for an alternative antibiotic. ...Read more

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If allergic to penicillan can I take keflex for a tooth abscess?

If allergic to penicillan can I take keflex for a tooth abscess?

Keflex: Keflex is a cephalosporin antibiotic and is not normally prescribed for dental infections. Since an antibiotic will not resolve your dental issues, your best bet is to see a local dentist and have the tooth evaluated. ...Read more

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Can I take cephalexin if I am highly allergic to penicillin? I have not taken penicillin since I was very young. Reaction of hives convulsions

Can I take cephalexin if I am highly allergic to penicillin? I have not taken penicillin since I was very young. Reaction of hives convulsions

Penicillin allergy: You have what is known as an immediate hypersensitivity reaction to penicillin derivatives and should never be given one, since this is life-threatening. There is said to be cross-hypersensitivity reactions to cephalosporins in 5% of pen allergic persons, and 0.1% of these have a severe reaction. My advice would be not to take a cephalosporin antibiotic unless there was no alternative. ...Read more