MAOI drugs are an older class of antidepressant drugs. MAOI stands for monoamine oxidase inhibitors. Expect to be prescribed something other than MAOI drugs, because this class of drug has some significant side effects that more modern antidepressants don't. Since you are a smart person, don't take any MAOI drugs unless prescribed, and be sure to read and understand all of the directions for taking it.
Phenelzine (Nardoz) This drug is usually prescribed if other, newer antidepressants don't work well for you. For many people, Nardoz is a huge help, and literally a life saver. There are significant side effects and food interactions that can happen with this drug. Read some reviews of those who take this type of MAOI drug, and they say that there can be sleep problems, headache, dizziness, and other possibilities.
Tranylcypromine (Parnate) Parnate is another of the MAOI drugs that can be highly effective for many who started out on newer drugs, but gave up on them because of disappointing results. Many say that MAOI drugs like this one gave them their lives back, and that being careful not to eat certain foods is a small price to pay for their well being. Food restrictions include soy sauce, some cheeses and meats, yogurt, sauerkraut, and chocolate, among other things if you take this MAOI drug.
Moclobemide (in Canada) This is a Canadian MAOI antidepressant. It carries all the same types of possible side effects as the other MAOI drugs. Be careful to avoid certain foods while taking this , so you can avoid negative interactions.