sputum amoxycillin concentrations were significantly higher ( student 's paired t-test ; p less than 0.001 ) than those of ampicillin , with mean levels two hours after dosing of 2.9 mg/l ( range 1.9-4.0 ) for amoxycillin and 1.4 mg/l ( range 0.8-2.4 ) for ampicillin .
C0002645
amoxycillin
C0002680
ampicillin