tranylcypromine improves toxicity of fentanyl transdermal by Other (see remark). Contraindicated. Remark: Prevent fentanyl in sufferers who involve concomitant administration MAOIs, or within just 14 times of stopping an MAOI. Critical and unpredictable potentiation by MAO inhibitors has become documented with opioid analgesics.amobarbital will low