Can I take Sulfamethoxazole/ Trimethoprim for a toothache if I am allergic to Pencillen?
This drug is a sulfonamide not a penicillin drug. There is not a cross reaction between sulfa drugs and penicillins. Many people are allergic to sulfa drugs so if you develop rash, or swelling call your Dr right away. If you have any difficulty breathing call 911 as this could be a serious reaction to the drug.
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