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My aunt's 88 and allergic to sulfa drugs and pennicillin. can she take keflex?

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DzooBaby 24 Oct 2011

Sorry no one has answered yet. I would be cautious on the Keflex. It is not a penicillin or a sulfa drug but sometimes folks with penicillin allergies have a cross allergy with cephalosporins which is what Keflex is. It would probably be best to take another drug.

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