blood was obtained from these subjects every two hours for 12 hours after oral intake of amoxicillin ( 3 g as a single dose ) , clindamycin ( 600 mg a single dose ) or erythromycin ( 1.5 g plus another 0.5 g after six hours ) , the serum being tested against three strep . viridans strains .
C0014806
erythromycin
C0038395
strep