PHENELZINE (Oral) (Tablet)

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PHENELZINE (Oral) (Tablet) Drug and Prescription Information

PHENELZINE (Oral) (Tablet)

PHENELZINE (Oral) (Tablet) Medication Classification


PHENELZINE (Oral) (Tablet) Brandname


PHENELZINE (Oral) (Tablet) is used for the Treatment

Phenelzine (FEN-el-zeen) Treats depression. This medicine is a monoamine oxidase (MAO) inhibitor.

When To Not Use PHENELZINE (Oral) (Tablet)

You should not use this medicine if you have had an allergic reaction to phenelzine. Do not use this medicine if you have high blood pressure, liver disease, heart disease, or severe kidney disease. Do not use this medicine if you have severe or frequent headaches, or pheochromocytoma (a tumor of the adrenal gland). You should not use this medicine if you have ever had a stroke, transient ischemic attack (TIA), or any other kind of cerebrovascular disease. There are many medicines that you should not use while you are using phenelzine. This includes medicine you can buy without a prescription (over-the counter). Make sure your doctor knows about all other medicines you are using. You may need to wait at least 14 days between using an MAO inhibitor and any other medicine. You must wait at least 5 weeks after you stop using Prozac® before you can start using phenelzine.

How Should You Use PHENELZINE (Oral) (Tablet)


  • Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.
  • You may need to use this medicine for as long as 4 weeks before you start feeling better.
  • If a dose is missed:
  • If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.

Proper PHENELZINE (Oral) (Tablet) Storage

Store PHENELZINE (Oral) (Tablet) at room temperature away from sunlight and moisture unless otherwise stated by manufacturer's instructions or labelling. Keep PHENELZINE (Oral) (Tablet) and all medications out of the reach of children.

What To Avoid While Using PHENELZINE (Oral) (Tablet)

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows about all other medicines you are using. MAO inhibitors can be very dangerous if used with certain other medicines. You may need to wait at least 14 days between using an MAO inhibitor and using another medicine. Wait 5 weeks if you are changing from Prozac® to Marplan®.
  • Do not drink alcohol while you are using this medicine. This includes Chianti wine, sherry, beer, non-alcohol or low alcohol beer and wine, and liqueurs. Tell your doctor if you are using any medicines that make you sleepy. These include sleeping pills, cold and allergy medicine, narcotic pain relievers, and sedatives.
  • Certain foods and drinks can cause dangerously high blood pressure in people who are using an MAO inhibitor. This is more common with aged, smoked, or fermented foods that are high in protein. Some foods you should not eat are cheese (especially strong or aged kinds), sour cream, caviar, liver, canned figs, soy sauce, sauerkraut, fava beans, yeasts, and yogurt. Avoid smoked or pickled meat, poultry, or fish, such as sausage, pepperoni, salami, anchovies, or herring. Do not eat dried fruit (such as raisins), bananas, avocados, raspberries, or very ripe fruit.
  • Do not drink or eat too much caffeine while you are using this medicine. Caffeine can be found in coffee, cola, chocolate, tea, and other foods and drinks. Ask your doctor how much caffeine is safe.

PHENELZINE (Oral) (Tablet) Warnings

  • Make sure your doctor knows if you are pregnant or breast feeding. Tell your doctor if you have Parkinson's disease, angina (chest pain), kidney disease, diabetes, or epilepsy. Your doctor also needs to know if you have schizophrenia, bipolar (manic-depressive) disorder, overactive thyroid, or a history of drug or alcohol addiction.
  • Your blood pressure might get too high while you are using this medicine. This may cause headaches, blurred vision, and other symptoms. You might need to keep track of your blood pressure between doctor appointments. If you think your blood pressure is getting too high, call your doctor right away.
  • Make sure any doctor or dentist who treats you knows that you are using this medicine. You may need to stop using this medicine several days before having surgery or medical tests.
  • This medicine may make you dizzy, drowsy, faint, or lightheaded. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.
  • Do not stop using this medicine suddenly without asking your doctor. You may need to slowly decrease your dose before stopping it completely.

PHENELZINE (Oral) (Tablet) Side Effects

Call your doctor right away if you notice any of these side effects:

  • Bright light bothering your eyes more than normal.
  • Unusual sweating, sometimes with fever or cold skin.
  • Fast, slow, or pounding heartbeat.
  • Feeling nervous, restless, anxious, agitated, or excited for no reason.
  • Headache, especially in the back of your head.
  • Seeing or hearing things that are not there, or severe confusion.
  • Stiff or sore neck.
  • Tightness in your throat or chest.
  • Vomiting and nausea.
  • If you notice these less serious side effects, talk with your doctor:
  • Dry mouth
  • Nausea, diarrhea, stomach pain, constipation.

PHENELZINE (Oral) (Tablet) Ratings

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