Kinetics of chlormethiazole in patients with alcohol withdrawal manifestations.

Chlormethiazole administered orally to patients in mild degrees of alcohol withdrawal was generally rapidly absorbed, showed a rapid distributive phase, and had an elimination phase 1 1/2 of 2.6 to 4.7 hr. The plasma concentrations of drug attained following higher oral doses were greater than is usually the case with augmentation of dose. Intravenously infused chlormethiazole in similar patients produced relatively high plasma concentrations of the drug, with distributive and eliminative 1 1/2 similar to those of oral doses. These pharmacokinetic patterns in alcoholic patients more closely resemble those previously reported for normal young subjects than they do for normal aged subjects.