Pharmacokinetics of pivmecillinam

1 The plasma concentration/time curves of ampicillin and mecillinam in normal subjects were measured after oral administration of ampicillin (500 mg) and pivmecillinam (400 and 600 mg). 2 Similar plasma concentration/time curves of ampicillin and mecillinam in the starved normal subjects followed oral administration of ampicillin (500 mg) and pivmecillinam (600 mg). 3 The plasma concentration/time curve of mecillinam was measured in the same normal subjects after oral administration of pivmecillinam (400 mg) with a reproducible standardized Lundh test meal. 4 There was no statistically significant difference in the plasma concentration/time curve of mecillinam after pivmecillinam/400 mg) and the meal compared with the plasma concentration/time curve after oral pivmecillinam (400 mg) was given to the same subjects when starved. After administration of pivmecillinam (400 mg) with meal, Tasc was significantly delayed beyond the value obtained when the subjects were starved. 5 The pharmacokinetics of pivmecillinam in coeliac disease are normal. This finding contrasts with previous studies on the pharmacokinetics of another pivaloyloxymethylpenicillin ester, pivampicillin, in this condition.