pentazocine drug pathway pentazocine pharmacodynamics pathway 2015-09-02T14:38:28Z PW:0001887 SMP:00686 The pathway of pentazocine-target interaction and of the biochemical or physiological responses to drug. Pentazocine is an opioid analgesic used to treat moderate to more severe pain. Genetic variations can cause differences in the response of the organism to the drug. pathway vpetri