Get Virtual Care
For Businesses
About Us
A member asked:
If i'm allergic to penicillin is it safe to take keflex pulvales?
A doctor has provided 1 answer
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.
Answered 10/3/2016
5.7k views
Thank
Related Questions
A member asked:
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?
A doctor has provided 1 answer
A member asked:
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?
A doctor has provided 1 answer
A member asked:
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?
4 doctors weighed in across 2 answers
A member asked:
I am allergic to penicillin is it safe to take cephalexin for infection in the urine.
3 doctors weighed in across 2 answers
A member asked:
Is it possible for you to mix penicillin 500 mg with keflex 500 mgvk 500 mg with acetaminophen?
A doctor has provided 1 answer
People also searched for:
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 read that the flu shot is made from antibiotics. Safe for people allergic to keflex and penicillin?
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?
I am allergic to keflex & penicillin. Is neosporin still ok to use on my skin?
Always fine w penicillin, but had extreme allergic reaction reaction to keflex! does that mean I am now also allergic to penicillin for sure?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
