the mean peak plasma level of amoxycillin and pivampicillin was 58 % ( range 35-96 % ) and 48 % ( 33-82 % ) of that noted after i.m . ampicillin , which gave a value of about 44 +/- 5 micrograms/ml ( mean +/- sem ) in both groups .
C0032032
pivampicillin
C0002680
ampicillin