Which medication is appropriate for treating oral infections caused by penicillinase-producing bacteria?

Explanation

Penicillinase-producing bacteria are resistant to standard penicillins like ampicillin. Dicloxacillin is a penicillinase-resistant penicillin, making it effective against such infections. Erythromycin is an alternative antibiotic but not specifically targeted for penicillinase producers. Therefore, dicloxacillin is the preferred treatment.