If a patient requires premedication with antibiotics before a dental procedure and he or she is allergic to penicillins or ampicillin but can take oral medication,the drug of choice is

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The drug of choice is 2 g of cephalexin.Alternatively,600 mg of clindamycin,or 500 mg of azithromycin,or 500 mg of clarithromycin may be prescribed.Tetracycline and metronidazole are not recommended antibiotics for immunoprophylaxis prior to a dental procedure in order to prevent endocarditis.Amoxicillin is contraindicated because it is a relative of ampicillin.

If a Patient Requires Premedication with Antibiotics Before a Dental