Monoamine oxidase inhibitor

Monoamine oxidase inhibitors (MAOIs) are a class of drugs that inhibit one or both monoamine oxidase enzymes: monoamine oxidase A (MAO-A) and monoamine oxidase B (MAO-B). These enzymes metabolize monoamine neurotransmitters and related amines, including serotonin, norepinephrine, dopamine, epinephrine, tyramine, and several trace amines.