venlafaxine drug pathway venlafaxine pharmacodynamics pathway 2016-02-02T11:59:11Z PW:0002475 The pathway of venlafaxiine-target interaction and of the biochemical or physiological responses to drug. The drug inhibits the reuptake of key neurotransmitters such as serotonin, epinephrine and dopamine. Genetic variations can cause differences in the response of the organism to the drug. pathway vpetri