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Taking Sulfamethoxazole-trimethoprim With A Penicillin Allergy

Updated November 15, 2018
Lola Says:
Mon, June 25, 2012

Allergic to penicillin... can I take Sulfamethoxazole-Trimethoprim 800/160 tabs?

1 Reply

1
Verwon Says:
Tue, June 26, 2012

Yes, Sulfamethoxazole with Trimethoprim is a sulfonamide antibiotic, which is in a different class than Penicillin, so it is often given to those who have allergies to the others.

Bactrim details here.

Has your doctor prescribed this? Are both he and your pharmacist aware of your allergy?

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