Absorption of pivampicillin as related to dose, and tolerability of a 700 mg tablet.

To evaluate the absorption and tolerability of a new formulation of pivampicillin administered as a 700 mg tablet, 14 healthy volunteers received single doses of 350, 500 and 700 mg p.o. Maximum serum concentrations (Cmax) of 5.73, 7.05 and 8.61 mg/l were obtained. The corresponding values for the area under the concentration/time curve (AUC) were 12.32, 18.99 and 25.30 mg/lxh. Concomitant intake of food increased the Cmax of the 700 mg tablet to 9.5 mg/l, while the AUC remained unchanged. Co-administration of the 700 mg pivampicillin dose with an antacid reduced the Cmax to 7.45 mg/l and the AUC to 17.92 mg/l x h. The tolerance of the 700 mg tablet was evaluated in a double-blind placebo-controlled study involving 57 patients. Six percent of the patients in each treatment group reported minor adverse reactions.