valproic acid drug pathway valproic acid pharmacodynamics pathway 2013-08-28T14:05:32Z PW:0001453 The pathway of valproic acid-target interaction and of the biochemical or physiological responses to drug. Valproic acid is used as a mood-stabilizing drug and in the treatment of epilepsy. More recently it has also been found to inhibit the proliferation of cancers. Genetic variations can cause differences in the response of the organism to the drug. pathway valproate pharmacodynamics pathway vpetri