Medication-info.com Search Menu

Nefazodone: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx) Boxed warning
Strength:
50 mg, 100 mg, 150 mg, 200 mg, 250 mg
Active ingredient:

Patient information: uses, side effects, how to take - Nefazodone

What is nefazodone?

Nefazodone is a medicine used to treat depression. Nefazodone is thought to treat depression by correcting an imbalance in the amounts of certain natural chemicals, such as serotonin and norepinephrine, which are in your brain.

Who should not take nefazodone?

Do not take nefazodone if you

  • are allergic to nefazodone or the related medicine Desyrel® (trazodone).
  • are taking Seldane® (terfenadine), an antihistamine; Hismanal® (astemizole), an antihistamine; Propulsid® (cisapride), used for heartburn; Halcion® (triazolam), used for insomnia; Orap® (pimozide), used to treat Tourette’s syndrome; or Tegretol® (carbamazepine), used to control seizures.
  • currently have liver problems.
  • are taking or have taken within the last 14 days one of the medicines for depression known as monoamine oxidase inhibitors (MAOIs), such as Nardil® or Parnate®.

Be sure to tell your doctor if you

  • have ever had liver problems;
  • are taking any other medicine, vitamin supplement, or herbal remedy, including those sold without a prescription (over-the-counter);
  • have heart problems or have had a heart attack or stroke;
  • have had manic episodes (extreme agitation or excitability);
  • have ever attempted suicide;
  • have had convulsions (seizures);
  • are pregnant or breast-feeding.

How should I take nefazodone?

  • Take nefazodone at the same time every day exactly as prescribed by your doctor. You may take nefazodone with or without food.

  • It may take a while for you to feel that nefazodone is working. You may not feel the full effect for several weeks. Once you feel better, it is important to keep taking nefazodone as directed by your doctor.
  • If you miss a dose of nefazodone, skip that dose and continue with your regular schedule. Never take 2 doses at the same time.
  • If you think that you have taken more nefazodone than prescribed, contact your doctor, local poison control center, or emergency room right away.

What should I avoid while taking nefazodone?

  • Do not drive or operate possibly dangerous machinery (such as an automobile, power mower, or power tool) or participate in any hazardous activity that requires full mental alertness until you know how nefazodone affects you.
  • Before taking nefazodone, tell your doctor about any medicines you are taking, including vitamin supplements, herbal remedies, and any non-prescription (over-the-counter) medicines. Some of these medicines may affect how nefazodone works and should not be used in combination without talking to your doctor.
  • Do not drink alcoholic beverages while taking nefazodone.
  • Tell your doctor if you are pregnant, planning to become pregnant, or become pregnant while taking nefazodone. It is not known whether nefazodone can harm your unborn baby.
  • Talk with your doctor before taking nefazodone if you are breast-feeding. It is not known whether nefazodone can pass through your breast milk to the baby.

What are the possible side effects of nefazodone?

The most common side effects of nefazodone are sleepiness, dry mouth, nausea, dizziness, constipation, weakness, lightheadedness, problems with vision, and confusion.

Call your doctor right away if you have any of the following side effects:

  • Yellowing of the skin or whites of eyes (jaundice)
  • Unusually dark urine
  • Loss of appetite that lasts several days or longer
  • Severe nausea
  • Abdominal (lower stomach) pain
  • Rash or hives
  • Seizure (convulsion)
  • Fainting
  • Erection that lasts too long

Tell your doctor right away about any side effects that you have or discomfort that you experience. Do not change your dose or stop taking nefazodone without talking with your doctor first.

Medicines are sometimes prescribed for conditions that are not mentioned in patient information leaflets. Your doctor has prescribed nefazodone for you and you alone. Do not give nefazodone to other people even if they have the same condition. It may harm them.

This leaflet provides a summary of the most important information about nefazodone. If you would like more information, talk with your doctor or pharmacist. You can ask for information about nefazodone that is written for healthcare professionals.

Brands listed are the trademarks of their registered owners.

Manufactured In Israel By:

Teva Pharmaceutical Ind. Ltd.

Kfar Saba, 4410202, Israel

Manufactured For:

Teva Pharmaceuticals

Parsippany, NJ 07054

Rev. C 10/2021

This Patient Information Leaflet has been approved by the U.S. Food and Drug Administration.

MEDICATION GUIDE

Antidepressant Medicines, Depression and other Serious Mental Illnesses, and Suicidal Thoughts or Actions

Rx only

Read the Medication Guide that comes with your or your family member’s antidepressant medicine. This Medication Guide is only about the risk of suicidal thoughts and actions with antidepressant medicines. Talk to your, or your family member’s, healthcare provider about:

  • all risks and benefits of treatment with antidepressant medicines
  • all treatment choices for depression or other serious mental illness

What is the most important information I should know about antidepressant medicines, depression and other serious mental illnesses, and suicidal thoughts or actions?

1. Antidepressant medicines may increase suicidal thoughts or actions in some children, teenagers, and young adults within the first few months of treatment.

  1. 2. Depression and other serious mental illnesses are the most important causes of suicidal thoughts and actions. Some people may have a particularly high risk of having suicidal thoughts or actions. These include people who have (or have a family history of) bipolar illness (also called manic-depressive illness) or suicidal thoughts or actions.

3. How can I watch for and try to prevent suicidal thoughts and actions in myself or a family member?

  • Pay close attention to any changes, especially sudden changes, in mood, behaviors, thoughts, or feelings. This is very important when an antidepressant medicine is started or when the dose is changed.
  • Call the healthcare provider right away to report new or sudden changes in mood, behavior, thoughts, or feelings.
  • Keep all follow-up visits with the healthcare provider as scheduled. Call the healthcare provider between visits as needed, especially if you have concerns about symptoms.

Call a healthcare provider right away if you or your family member has any of the following symptoms, especially if they are new, worse, or worry you:

  • thoughts about suicide or dying
  • attempts to commit suicide
  • new or worse depression
  • new or worse anxiety
  • feeling very agitated or restless
  • panic attacks
  • trouble sleeping (insomnia)
  • new or worse irritability
  • acting aggressive, being angry, or violent
  • acting on dangerous impulses
  • an extreme increase in activity and talking (mania)
  • other unusual changes in behavior or mood
  • Visual problems: eye pain, changes in vision, swelling or redness in or around the eye

Low salt (sodium) levels in the blood. Elderly people may be at greater risk for this. Symptoms may include:

  • headache
  • weakness or feeling unsteady
  • confusion, problems concentrating or thinking or memory problems

What else do I need to know about antidepressant medicines?

  • Never stop an antidepressant medicine without first talking to a healthcare provider. Stopping an antidepressant medicine suddenly can cause other symptoms.
  • Visual problems: Only some people are at risk for these problems. You may want to undergo an eye examination to see if you are at risk and receive preventative treatment if you are.
  • Antidepressants are medicines used to treat depression and other illnesses. It is important to discuss all the risks of treating depression and also the risks of not treating it. Patients and their families or other caregivers should discuss all treatment choices with the healthcare provider, not just the use of antidepressants.
  • Antidepressant medicines have other side effects. Talk to the healthcare provider about the side effects of the medicine prescribed for you or your family member.
  • Antidepressant medicines can interact with other medicines. Know all of the medicines that you or your family member takes. Keep a list of all medicines to show the healthcare provider. Do not start new medicines without first checking with your healthcare provider.
  • Not all antidepressant medicines prescribed for children are FDA approved for use in children. Talk to your child’s healthcare provider for more information.
  • Tell your healthcare provider if have low sodium levels in your blood during treatment with nefazodone hydrochloride tablets.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

This Medication Guide has been approved by the U.S. Food and Drug Administration for all antidepressants.

Manufactured In Israel By:

Teva Pharmaceutical Ind. Ltd.

Kfar Saba, 4410202, Israel

Manufactured For:

Teva Pharmaceuticals

Parsippany, NJ 07054

Rev. J 7/2025

About this document

Source: FDA drug labeling via NLM DailyMed · Application number: ANDA 076037 · View the label on DailyMed

Revision date stated in the text: July 2025

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Nefazodone

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Boxed warning Yes – this drug has a boxed warning (also called a black box warning), the strongest warning of the FDA.
Drug class Serotonin Reuptake Inhibitor
Active ingredient Nefazodone hydrochloride
Dosage form Tablet
Route Oral
Marketing status listed in the FDA NDC Directory
Company (applicant) TEVA
FDA approval ANDA 076037Abbreviated New Drug Application (ANDA) – generic drug Approved September 16, 2003
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
50 mg – 100 in 1 bottle NDC 0093-7178-01
100 mg – 60 in 1 bottle NDC 0093-1024-06
150 mg – 60 in 1 bottle NDC 0093-7113-06
200 mg – 60 in 1 bottle NDC 0093-1025-06
250 mg – 60 in 1 bottle NDC 0093-1026-06

Source: FDA drug labeling via NLM DailyMed, data as of October 31, 2026. FDA data (DailyMed, Orange Book, Drug Shortages, enforcement reports). Not a substitute for the advice of a doctor or pharmacist.