Monoamine Oxidase Inhibitors (MAOIs) for Social Anxiety Disorder

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Monoamine Oxidase Inhibitors (MAOIs) for Social Anxiety Disorder

Examples

isocarboxazid ( Marplan )
phenelzine sulfate ( Nardil )
tranylcypromine sulfate ( Parnate )

How It Works

These medications balance certain brain chemicals (neurotransmitters). When these brain chemicals are in proper balance, the symptoms of anxiety are relieved. Monoamine oxidase inhibitors do this by reducing the amount of monoamine oxidase, the substance that breaks down the neurotransmitters.

Why It Is Used

Monoamine oxidase inhibitors (MAOIs) usually are not the first medications given for anxiety because they have serious side effects when combined with certain foods and/or medications. They are usually given to people with anxiety who:

Did not get better with other antidepressants.
Cannot tolerate the side effects of other antidepressants.
Have a family or personal history of successful treatment with MAOIs.
Have unusual depression or anxiety symptoms.

When these drugs are not recommended

MAOIs are not recommended for children or teens.

How Well It Works

Current research suggests that monoamine oxidase inhibitors (MAOIs) may be less effective than other antidepressants (such as tricyclics) in treating anxiety disorders or major depressive illness.¹ However, MAOIs are still the treatment of choice in cases of anxiety or depression with unusual features, such as a heavy feeling in the arms and legs, sensitivity to rejection, and a reactive mood. MAOIs are often used as an alternative treatment for anxiety or depression that has not responded to other medications.

Side Effects

Side effects of monoamine oxidase inhibitors include:

Difficulty getting to sleep.
Dizziness, lightheadedness, and fainting.
Dry mouth, blurred vision, and appetite changes.
High blood pressure and changes in heart rate and rhythm.
Muscle twitching and feelings of restlessness.
Loss of sexual desire or ability.
Weight gain.
Negative interactions with other medications and some foods.

See the HealthyPlace.com Psychiatric Medications area for a more complete list of side effects.

What to Think About

People who are taking monoamine oxidase inhibitors (MAOIs) need to avoid eating certain foods, such as some cheeses, broad beans like fava beans, pickled foods like sauerkraut, and red wine. Eating these foods can cause high blood pressure.

People who take MAOIs also need to avoid some nonprescription medications, particularly certain cold remedies and diet pills.

People who stop taking MAOIs need to wait at least 14 days before taking another antidepressant.

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MAOIs can cause death if they are combined with certain foods, taken with certain medications, or taken as an overdose. Talk with your health professional about diet and medication restrictions you need to follow if you are planning to take an MAOI.

MAOIs are not recommended for children or teens.

Last updated: May 8, 2002

Citations

Doris A, et al. (1999). Depressive illness. Lancet, 354: 1369-1375.

Monoamine Oxidase Inhibitors (MAOIs) for Social Anxiety Disorder

Examples

How It Works

Why It Is Used

How Well It Works

Side Effects

What to Think About

Citations

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