Monoamine oxidase inhibitors are antidepressant drugs prescribed for those patients who are or have become resistant to tricyclic antidepressant drugs and/or therapy. Monoamine Oxidase Inhibitors (MAOIs) are the oldest antidepressant drug. Due to the potential lethal drug and dietary interactions of monoamine oxidase inhibitors, these drugs are usually reserved and a last resort, and are used only when other antidepressant medications prove ineffective.

Like all drugs, monoamine oxidase inhibitors have a number of side effects. Such side effects include;

• Drowsiness
• Stomach upset
• Fatigue
• Dry Mouth
• Lightheadedness, especially when getting up from a lying or sitting position
• Reduced urine output, water retention (Edema)
• Decreased sexual function
• Sleep disorder (Insomnia, etc.)
• Confusion
• Muscle twitching
• Weight gain
• Shakiness
• Diarrhea
• Dizziness
• Hypotension (Low blood pressure)
• Hypertension (High blood pressure)
• Blurred vision
• Trembling
• Weakness
• Increased perspiration
• Dry mouth
• Constipation
• Nausea
• Headache
• Increased appetite
• Restlessness
• Suicidal tendencies

Although the list encompasses the general side effects cause by MAOIs, patient may have side effects that are not listed. Hence, any and all side effects should be reported to the doctor in attendance.