A member asked:

Taking norco 7.5/325 1-1 1/2 every 6 hours as needed post surgery. rashed out on face, real red and was advised to take benadryl (diphenhydramine). i took 25mg 7 hour?

A doctor has provided 1 answer
Dr. Robert Fietsam answered

Specializes in Surgery - Thoracic

Histamine : Narcotics cause the release of histamine which can cause a red rash , as well as itching also. Benadryl (diphenhydramine) should help

Answered 4/21/2016

1.4k views

Thank

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