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17 yrs old now at 2 yrs had allergic reaction to sulfa drugs. Safe to take Hyoscyamine sulfate?

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suzanne66 23 Feb 2010

Yes, you are safe to take Hyoscyamine sulphate.
An allergy to sulfa drugs usually refers to a group of antibiotics called "sulfonamides" . Hyoscyamine sulphate is not related.

Sulphate allergies are extremely rare .

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