A member asked:

I am allergic to sulfa and was just prescribed hyoscyamine sulf by an er dr. can i take it or will i have an allergic reaction?

5 doctors weighed in across 2 answers
Dr. Robert Killian answered

Specializes in General Practice

Not the same thing: They sound the same, but are not the same thing. Your pharmacist would not have given you the medication if that were the case.

Answered 8/19/2013

4.9k views

Thank

Do not rely on pharm: I agree with chemical difference. I would not rely heavily on pharmacists input.

Answered 11/28/2017

4.9k views

Thank

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