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The physician prescribes sulfamethoxazole and trimethoprim (Bactrim) to a patient with a UTI. A known allergy to which of the following is a contraindication for this medicine?

User Gsharp
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Final answer:

A known allergy to sulfonamides is a contraindication for taking sulfamethoxazole and trimethoprim (Bactrim) for a UTI.

Step-by-step explanation:

A known allergy to sulfonamides is a contraindication for taking sulfamethoxazole and trimethoprim (Bactrim) for a UTI. Sulfonamides are a group of drugs that include sulfamethoxazole and can cause hypersensitivity reactions in individuals with sulfa allergies. It is important for healthcare professionals to be aware of patients' allergies to sulfonamides before prescribing this medication.

User Babu Srinivasan
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