Information on Tablets A-Z
IMPORTANT WARNING:Studies have shown that children and teenagers who take antidepressants ('mood elevators') such as phenelzine are more likely to think about harming or killing themselves or to plan or try to do so than children who do not take antidepressants. Children younger than 18 years of age should not normally take phenelzine.If your child’s doctor has prescribed phenelzine for your child, you should watch his or her behavior very carefully, especially at the beginning of treatment and any time his or her dose is increased or decreased. Your child may develop serious symptoms very suddenly, so it is important to pay attention to his or her behavior every day. Call your child’s doctor right away if he or she experiences any of these symptoms: new or worsening depression; thinking about harming or killing him- or herself or planning or trying to do so; extreme worry; agitation; panic attacks; difficulty falling or staying asleep; irritability; aggressive behavior; acting without thinking; severe restlessness; frenzied abnormal excitement, or any other sudden or unusual changes in behavior.Your child’s doctor will want to see your child often while he or she is taking phenelzine, especially at the beginning of his or her treatment.Your child’s doctor may also want to speak with you or your child by telephone from time to time. Be sure that your child keeps all appointments for office visits or telephone conversations with his or her doctor.Talk to your child’s doctor about the risks of giving phenelzine to your child.
Medication prescribed:Phenelzine, a monoamine oxidase (MAO) inhibitor, and an antidepressant, is used to treat depression. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
How should this medicine be used:Phenelzine comes as a tablet to take by mouth. It is usually taken three times a day and may be taken with or without food. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take phenelzine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Continue to take phenelzine even if you feel well. Do not stop taking phenelzine without talking to your doctor, especially if you have taken large doses for a long time. Your doctor probably will want to decrease your dose gradually. This drug must be taken regularly for a few weeks before its full effect is felt. Your doctor or pharmacist will give you the manufacturer’s patient information sheet when you begin treatment with phenelzine. Read the information carefully and ask your doctor or pharmacist any questions you have.
Other uses for this medicine:MAO inhibitors [phenelzine (Nardil) or tranylcypromine (Parnate)] are also used occasionally to treat eating disorders, cocaine addiction, headaches, and panic attacks. Talk to your doctor about the possible risks of using this drug for your condition.
Special precautions:Before taking phenelzine, tell your doctor and pharmacist if you are allergic to phenelzine or any other drugs. tell your doctor and pharmacist what prescription and nondescription medications you are taking, especially antidepressants; antihistamines; beta-blocking drugs [acebutolol (Sectral), atenolol (Tenormin), betaxolol (Kerlone), penbutolol (Levatol), carteolol (Cartrol), bisoprolol (Zebeta), pindolol (Visken), metoprolol (Lopressor), timolol (Blocadren), sotalol (Betapace), nadolol (Corgard), or propranolol (Inderal)]; diabetic drugs [insulin, acetohexamide (Dymelor), chlorpropamide (Diabinese), tolazamide (Tolinase), tolbutamide (Orinase), glyburide (Micronase, DiaBeta, Glynase), or glipizide (Glucotrol)]; fluoxetine (Prozac); guanethidine (Ismelin); levodopa (Sinemet, Larodopa); medication for high blood pressure including diuretics ('water pills'), seizures, Parkinson's disease, asthma, colds, or allergies; meperidine (Demerol); methyldopa (Aldomet); methylphenidate (Ritalin); muscle relaxants; paroxetine (Paxil); reserpine; sedatives; sertraline (Zoloft); sleeping pills; thyroid medication; tranquilizers; and vitamins. tell your doctor if you have or have ever had, or anyone in your family has or has ever had, depression, bipolar disorder (mood that changes from depressed to abnormally excited), or mania (frenzied, abnormally excited mood), or if you have, or anyone in your family has, thought about or attempted suicide. Also tell your doctor if you have or have ever had high blood pressure; a stroke; glaucoma; an enlarged prostate; difficulty urinating; diabetes; seizures; an overactive thyroid gland; or liver, kidney, or heart disease. tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking phenelzine, call your doctor immediately. if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking phenelzine. you should know that this drug may make you drowsy. Do not drive a car or operate machinery until you know how this drug affects you. remember that alcohol can add to the drowsiness caused by this drug. tell your doctor if you use tobacco products. Cigarette smoking may decrease the effectiveness of this drug. you should know that your mental health may change in unexpected ways, especially at the beginning of your treatment and any time that your dose is increased or decreased. These changes may occur at any time if you have depression or another mental illness, whether or not you are taking phenelzine or any other medication. You, your family, or your caregiver should call your doctor right away if you experience any of the following symptoms: new or worsening depression; thinking about harming or killing yourself or planning or trying to do so; extreme worry; agitation; panic attacks; difficulty falling asleep or staying asleep; aggressive behavior; irritability; acting without thinking; severe restlessness; and frenzied, abnormal excitement. Be sure that your family or caregiver knows which symptoms may be serious so they can call the doctor when you are unable to seek treatment on your own.
Special dietary instructions:Avoid foods and beverages containing tyramine or tryptophan while taking phenelzine and for 2 weeks after stopping this drug. These foods and beverages include alcoholic beverages, especially beer, Chianti, and other red wines; alcohol-free beer; cheeses (especially strong, aged, or processed varieties); sauerkraut; yogurt; raisins; bananas; sour cream; pickled herring; liver (especially chicken liver); dry sausage (including hard salami and pepperoni); canned figs; avocados; soy sauce; turkey; yeast extracts; papaya products (including certain meat tenderizers); fava beans; and broad bean pods. Excessive amounts of caffeine and chocolate also should be avoided.
If I forget a dose:If you take several doses per day, take the missed dose as soon as you remember it and take any remaining doses for that day at evenly spaced intervals. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. If you take phenelzine once a day at bedtime and do not remember to take it until the next morning, skip the missed dose. Do not take a double dose to make up for a missed one.
What side effects:Side effects from phenelzine are common: upset stomach drowsiness weakness or tiredness excitement or anxiety insomnia nightmares dry mouth skin more sensitive to sunlight than usual changes in appetite or weight Tell your doctor if any of these symptoms are severe or do not go away: constipation difficulty urinating frequent urination blurred vision changes in sex drive or ability excessive sweating If you experience any of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately: severe headache jaw, neck, and back muscle spasms neck stiffness or soreness swelling of legs or arms fever, chills, sore throat, or flu-like symptoms difficulty breathing or swallowing severe skin rash yellowing of the skin or eyes irregular heartbeat
What storage conditions:Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose:In case of overdose, call your local poison control center. If the victim has collapsed or is not breathing, call local emergency services at 911.
Other information:Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your response to phenelzine. Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
More information: Phenelzine