6 doctors weighed in:

If allergic to pcn are you allergic to ampicillin?

6 doctors weighed in
Dr. Michael Ein
Internal Medicine - Infectious Disease
3 doctors agree

In brief: Yes

If you had an allergic reaction to penicillin it is likely you will have the same reaction if you take ampicillin.

In brief: Yes

If you had an allergic reaction to penicillin it is likely you will have the same reaction if you take ampicillin.
Dr. Michael Ein
Dr. Michael Ein
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Dr. David Shulan
Internal Medicine - Allergy & Immunology

In brief: Yes

Ampicillin is a penicillin.
Studies in the past have shown that most people can loose penicillin allergy over time ( nearly 80% ten years or more after a reaction). Testing can be helpful to see if you lost the allergy, particularly with less severe rash reactions.

In brief: Yes

Ampicillin is a penicillin.
Studies in the past have shown that most people can loose penicillin allergy over time ( nearly 80% ten years or more after a reaction). Testing can be helpful to see if you lost the allergy, particularly with less severe rash reactions.
Dr. David Shulan
Dr. David Shulan
Thank
Dr. Amy Shah
Internal Medicine - Allergy & Immunology

In brief: Yes

Ampicillin is a beta lactam antibiotic- closely related to penicillin.
It is part of the aminopenicillin family and is roughly equivalent to Amoxicillin in terms of spectrum and level of activity. I would avoid it until you have had a chance to get penicillin testing through your doctor.

In brief: Yes

Ampicillin is a beta lactam antibiotic- closely related to penicillin.
It is part of the aminopenicillin family and is roughly equivalent to Amoxicillin in terms of spectrum and level of activity. I would avoid it until you have had a chance to get penicillin testing through your doctor.
Dr. Amy Shah
Dr. Amy Shah
Thank
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