Pharmacokinetics of antimalarials and proposals for dosage regimens.

Blood level data for the antimalarials amodiaquine, chloroguanide, chloroquine, pyrimethamine, quinine and sulphadoxine have been retrieved from the literature and pharmacokinetically analyzed. Minimum, average and maximum blood level concentrations at steady state in suppressive treatment and peak concentrations in therapeutic treatment were predicted and blood level-time curves simulated. Based on the computer-predicted data, changes in dosage regimens are proposed to reduce the fluctuations between maximum and minimum levels in suppressive treatment, and for obtaining maximum peak levels in therapeutic treatment already with the loading dose.