[Serum RIA vasopressin levels in 5 healthy subjects during water loading, before and during treatment by carbamazepine (author's transl)].

Serum vasopressin level has been measured by radioimmunoassay in 5 healthy subjects during water loading, before and during treatment by carbamazepine. Serum vasopressin drops significantly during carbamazepine in spite of antidiuresis. This drop may be explained by an effect of carbamazepine on renal tubular cell.