Penicillin G Benzathine (Monograph)
Adult Dosage Pharyngitis and Tonsillitis. For the treatment of pharyngitis or tonsillitis caused by S. pyogenes (group A β-hemolytic streptococci; GAS) and prevention of initial attacks (primary prevention) of rheumatic fever, the usual adult dosage of penicillin G benzathine is a single IM dose of 1.2 million units.. Although anti-infective treatment is not …