Nefazodone

pronounced as (nef ay' zoe done)

Brand Name(s): Serzone®, also available generically

Why is this medicine prescribed?

Nefazodone is used to treat depression. Nefazodone is in a class of medications called serotonin modulators. It works by increasing the amounts of certain natural substances in the brain that are needed to maintain mental balance.

Are there other uses for this medicine?

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

How should this medicine be used?

Nefazodone comes as a tablet to take by mouth. It is usually taken two times a day with or without food. Take nefazodone at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take nefazodone exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Your doctor may start you on a low dose of nefazodone and gradually increase your dose, not more than once every week.

It may take several weeks or longer for you to feel the full benefit of nefazodone. Continue to take nefazodone even if you feel well. Do not stop taking nefazodone without talking to your doctor. If your doctor tells you to stop taking nefazodone, your doctor will probably want to decrease your dose gradually.

What special precautions should I follow?

Before taking nefazodone,

  • tell your doctor and pharmacist if you are allergic to nefazodone, trazodone (Desyrel), or any other medications.
  • tell your doctor if you are taking astemizole (Hismanal) (not available in the U.S.), carbamazepine (Tegretol), cisapride (Propulsid) (not available in the U.S.), pimozide (Orap), terfenadine (Seldane) (not available in the U.S.);or triazolam (Halcion).Your doctor will probably tell you not to take nefazodone.
  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: alprazolam (Xanax), anticoagulants ('blood thinners') such as warfarin (Coumadin); buspirone (BuSpar); cholesterol-lowering medications (statins) such as atorvastatin (Lipitor), lovastatin (Mevacor), and simvastatin (Zocor); cyclosporine (Neoral, Sandimmune); digoxin (Lanoxin); haloperidol (Haldol); medications for high blood pressure, medications for seizures, medications to treat anxiety; muscle relaxants; propranolol (Inderal); sedatives; sleeping pills; tacrolimus (Prograf); or tranquilizers. . If you have recently stopped taking fluoxetine (Prozac, Sarafem), your doctor may tell you to wait several weeks before beginning to take nefazodone. Also tell your doctor or pharmacist if you are taking the following medications or have stopped taking them within the past two weeks: monoamine oxidase (MAO) inhibitors such as isocarboxazid (Marplan), phenelzine (Nardil), selegiline (Eldepryl, EMSAM, Zelapar) or tranylcypromine (Parnate). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
  • tell your doctor if you have or have ever had seizures; a heart attack, chest pain, a stroke, or other types of heart disease.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking nefazodone, call your doctor.
  • you should know that this medication may make you drowsy or affect your judgment, thinking, or motor skills. Do not drive a car or operate machinery until you know how this medication affects you.
  • you should know that nefazodone may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. This is more common when you first start taking nefazodone. To help avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up.
  • you should know that diarrhea, vomiting, not drinking enough fluids, and sweating a lot can cause a drop in blood pressure, which may cause lightheadedness and fainting. Tell your doctor if you have any of these problems or develop them during your treatment.
  • if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking nefazodone.
  • Avoid drinking alcohol while taking nefazodone.

What should I do if I forget to take a dose?

Take the missed dose as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

What should I do in case of overdose?

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help . If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.

Symptoms of overdose may include the following:

  • nausea
  • vomiting
  • drowsiness

What side effects can this medicine cause?

Nefazodone may cause side effects. Call your doctor if any of these symptoms are severe or do not go away:

  • headache
  • difficulty concentrating
  • dry mouth
  • heartburn
  • flushing or feeling warm
  • pain, burning, numbness, or tingling in the hands or feet
  • constipation

Some side effects can be serious. If you experience any of the following symptoms or those listed in the IMPORTANT WARNINGS or SPECIAL PRECAUTIONS sections, call your doctor immediately:

  • rash
  • hives
  • itching
  • difficulty breathing or swallowing
  • swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
  • hoarseness
  • slow heartbeat
  • memory problems
  • blurred vision or vision changes
  • confusion
  • seizures
  • painful erection of the penis lasting more than 4 hours

Nefazodone may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online ( http://www.fda.gov/Safety/MedWatch ) or by phone (1-800-332-1088).

What should I know about storage and disposal of this medication?

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).

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website ( http://goo.gl/c4Rm4p ) for more information if you do not have access to a take-back program.

What other information should I know?

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

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