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McDonough, GA
A 18-year-old female asked:

if i was.allergic to a pill how long after taking it would i know i took norco (hydrocodone and acetaminophen) but i've took vicidion and lortab before what's the chance of allergy?

1 doctor answer1 doctor weighed in
Dr. John Chiu
Dr. John Chiu answered
Allergy and Immunology 57 years experience
Minutes to hours: If you are allergic to a drug, the reaction usually occurs within minutes and 2 hours. However if the reaction is a rash , it may take several days. Norco (hydrocodone and acetaminophen) is not a highly allergenic drug although you may get side effects from the opiate it contains.

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Last updated Jun 30, 2014
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