tranylcypromine improves toxicity of fentanyl transdermal by Other (see remark). Contraindicated. Comment: Keep away from fentanyl in patients who involve concomitant administration MAOIs, or inside of 14 days of halting an MAOI. Intense and unpredictable potentiation by MAO inhibitors has become noted with opioid analgesics.Fentanyl can cause seve