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It depends what the allergy was to penicillin. Overall, there is around a 7-10% chance of cross-sensitivity (meaning you may be allergic to Keflex if allergic to penicillins). If you developed a rash/hives from penicillin, the doctor MAY prescribe Keflex if the Dr. believes Keflex is the best antibiotic choice for you. If you had an anaphylaxic reaction (meaning you had a life threatening reaction to penicillins), the doctor should NOT prescribe keflex. He or she should prescribe something else.
Make sure you let your Dr. and pharmacist know all Allergies you have to prevent any problems in the future.
What else can I help you with?
Can you take keflex if you have an allergy to pcn?
Maybe. Some people that are allergic to penicillin are also allergic to Keflex and some aren't. To be on the safe side I would avoid it.
Is it safe to take Zyrtec if you are allergic to sulfa and penicillin?
There is no relation between penicillin allergy and cyclobenzaprine allergy. There is no problem if you're only allergic to penicillin.
Sulfa drug Is Keflex a Sulfa Drug?
No. Cephalexin (trade name Keflex) is a 1st generation cephalosporin, an antibiotic related to penicillin. It is not a sulfa drug or derivative.
Should you take keflex I am very allergic to sulfur?
Keflex is not a sulpha drug.
Can you take phentermine if you ar allergic to penicillin?
can you take phentermine if you are allergic to penicillin?
Can you take ceftriaxone if you are allergic to penicillin?
No, it is not recommended to take ceftriaxone if you are allergic to penicillin.
Can you take meloxicam if you are allergic to penicillin?
can you take malarone if allergic to penicillin
Can cats take Keflex and is it safe for them?
No, cats should not take Keflex as it is not safe for them. It is important to consult a veterinarian for proper medication for cats.
Can you take tizanidine if you are allergic to penicillin?
Tizanidine is muscle relaxant and it has nothing to do with penicillin. Penicillin is an antibiotic. You can be simultaneously allergic to Tizanidine also.
Can you take roxithromycin if you are allergic to penicilin?
Can I take roxithromycin if I am allergic to penicillin
What can you take allergic to penicillin?
ampiclox
Can you take Neomycin if allergic to Penicillin?
NO
