Hoehe M, 1988. Influence in the menstrual cycle on neuroendocrine and behavioral responses to an opiate agonist in humans: preliminary results. Psychoneuroendocrinologylumacaftor/ivacaftor will lower the level or effect of fentanyl by affecting hepatic/intestinal enzyme CYP3A4 metabolism.dabrafenib will lessen the level or effect of fentanyl by aff