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 answer • 1 doctor weighed in
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.
4153 viewsAnswered >2 years ago
Last updated Jun 30, 2014
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$15 per month
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.