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Antipsychotic medications: What they are and how they work

What are antipsychotic medications, how do they work, and who are they for? Here's what you need to know before your next appointment.

June 4, 2026

By Dr. Juli Fraga, Psy.D • Clinically reviewed by Dr. Anik Saha, M.D.

9 min read

By Dr. Juli Fraga, Psy.D • Clinically reviewed by Dr. Anik Saha, M.D.

If you've recently learned that antipsychotic medication might be part of your treatment plan — or you're simply trying to understand what these medications do — you're in the right place. It's completely normal to have questions, and taking the time to learn more is a meaningful step in taking care of yourself.

Antipsychotic medications (sometimes called neuroleptics in medical literature) are more widely used than many people realize. Unlike antidepressants, which tend to come up often in everyday conversations, antipsychotics are less talked about — which can make encountering them for the first time feel unfamiliar or even alarming. But these medications have been studied extensively and are a well-established part of mental health care.

They work by interacting with certain neurotransmitters in the brain and are prescribed for a range of conditions, from antipsychotic medications for schizophrenia to treatments for mania, depression, and psychosis. Many people find them to be an important and effective part of managing their mental health.

In this guide, we'll walk you through how antipsychotic medications work, what they're used to treat, what side effects to be aware of, and when additional psychiatric support might be helpful — so you can feel informed and confident in conversations with your care team.

What are antipsychotics?

Antipsychotics are actually prescribed for a wider range of conditions than the name suggests. Beyond psychosis, antipsychotics can also help treat conditions such as bipolar disorder, tics from Tourette syndrome, irritability associated with autism, and depression — often as an add-on to antidepressants when they aren't working well enough on their own.

Just like taking insulin doesn’t “cure” diabetes, antipsychotics don’t “cure” mental health conditions. These medications don't permanently solve the underlying condition, but they directly affect the brain chemistry that drives symptoms — which is why they can be such an effective part of a treatment plan, often alongside therapy. These medications are most often prescribed and monitored by a psychiatrist or psychiatric nurse practitioner, though medical doctors and other clinicians may prescribe them as well — particularly when access to a specialist is limited.

How do antipsychotic medications work?

Mental health conditions like bipolar disorder, major depressive disorder, and schizophrenia involve complex changes in how the brain works — including how different brain regions communicate using chemical signals called neurotransmitters. While researchers don't fully understand the underlying biology of these conditions, dopamine is one neurotransmitter known to play a role, particularly in symptoms like hallucinations, paranoia, and disorganized thinking.

Antipsychotic medications primarily work by reducing the activity of dopamine in specific brain pathways. Newer (second-generation) antipsychotics also affect serotonin signaling. By dampening these signals, antipsychotics can reduce psychotic symptoms and help stabilize mood — though responses vary from person to person, and finding the right medication and dose often takes time.

What are different types of antipsychotics?

Antipsychotics are generally grouped into two generations. Both work primarily by reducing dopamine activity in the brain, but they differ in which other brain chemicals they affect — which is what drives most of the differences in side effects between the two groups.

First-generation antipsychotics (typical)

  • Chlorpromazine: Used to treat symptoms of schizophrenia and the manic phase of bipolar disorder. It is also sometimes used in medical settings to treat severe nausea or persistent hiccups.
  • Fluphenazine: Used to treat symptoms of schizophrenia. It is also available as a long-acting injection, which can be helpful for people who have difficulty taking a daily pill.
  • Loxapine: Used to treat symptoms of schizophrenia, including hallucinations and delusions. An inhaled form is also used in hospital settings to quickly calm acute agitation.
  • Haloperidol: Used to treat schizophrenia and tics associated with Tourette syndrome. It is also one of the most commonly used medications in emergency rooms and hospitals to manage acute agitation or delirium.

Second-generation antipsychotics, also called "atypical antipsychotics," have been in use since the 1990s. They work by blocking dopamine and serotonin receptors in the brain — though a few newer medications in this class (like aripiprazole) work somewhat differently, by partially activating rather than blocking dopamine receptors.

Second-generation antipsychotics (atypical)

  • Aripiprazole: Used to treat schizophrenia, bipolar disorder, irritability associated with autism, and tics associated with Tourette syndrome. It is also commonly used as an add-on to antidepressants for depression that hasn't fully responded to first-line treatment.
  • Risperidone: Used to treat schizophrenia, bipolar disorder, and irritability associated with autism. It is also available as a long-acting injection.
  • Lurasidone: Used to treat schizophrenia and bipolar depression.
  • Olanzapine: Used to treat schizophrenia, bipolar disorder, and acute agitation. In combination with fluoxetine, it is also approved for treatment-resistant depression.
  • Quetiapine: Used to treat schizophrenia, bipolar disorder (including bipolar depression), and as an add-on for major depressive disorder. 

For what conditions are antipsychotics prescribed for?

Antipsychotics are prescribed for a range of conditions, not exclusively psychotic disorders. They are always prescribed by a licensed health care professional after a thorough clinical evaluation. For some conditions, like schizophrenia, antipsychotics are considered a first-line treatment. For others, they may be added when other treatments haven't fully worked.

  • Schizophrenia: Antipsychotics are a first-line treatment for symptoms like hallucinations, disorganized thinking, and delusions.
  • Bipolar disorder: Used to treat acute mania, depressive episodes, and to help prevent future episodes.
  • Schizoaffective disorder: Helps manage symptoms of psychosis, mania, and depression, often in combination with other medications.
  • Tourette syndrome: Certain antipsychotic medications help reduce motor and vocal tics.
  • Irritability associated with autism: A few specific antipsychotics (such as risperidone and aripiprazole) are FDA-approved to treat irritability and aggression in children with autism.
  • Major depressive disorder: Used as an add-on to antidepressants when symptoms haven't fully responded to first-line treatment.
  • PTSD (in specific cases): Sometimes used off-label when other treatments haven't worked, though evidence for this use is limited and they are not FDA-approved for PTSD.
  • Delirium or severe agitation in acute settings: Used in hospital settings to manage severe agitation, particularly when safety is a concern. In older adults with dementia, antipsychotics carry an FDA warning about increased risk of death and are used cautiously and only when other approaches haven't worked.

Benefits and risks of antipsychotics

Antipsychotic medications can be prescribed to treat a range of health conditions. As with any medicine, it's important to understand the benefits as well as the antipsychotic medications side effects that may come with them. Knowing how antipsychotics work can help you make informed decisions with your healthcare provider. 

Potential benefits

  • Reduction in psychotic symptoms: By reducing dopamine activity in the brain, antipsychotics can help ease psychotic symptoms such as hallucinations, paranoia, delusions, and disorganized thinking (better ability to think clearly, focus on tasks, and stay grounded in reality).
  • Mood stabilization: Helps reduce intense mood swings, symptoms of mania, and depressive episodes (a greater ability to feel calm and manage stress).
  • Improved daily functioning: By reducing serious mental health symptoms, antipsychotic medications can improve daily functioning (better ability to work, remember tasks, and care for responsibilities).
  • Prevention of relapse in chronic conditions: By keeping symptoms under control over time, antipsychotic medications can help prevent relapse of chronic conditions like schizophrenia, bipolar disorder, and recurring mood episodes.

Potential risks and side effects

  • Weight gain and metabolic changes: Many antipsychotics — particularly second-generation ones — can cause significant weight gain, increased blood sugar, and changes in cholesterol levels. Some people develop type 2 diabetes over time, which is why providers monitor weight, blood sugar, and lipids regularly.
  • Sedation or fatigue: Feeling drowsy or fatigued, especially when starting a new medication or increasing the dose.
  • Movement-related side effects (extrapyramidal symptoms, or EPS): A group of side effects that includes muscle stiffness, tremors, slowed movements, involuntary muscle contractions (dystonia), and akathisia — a distressing inner restlessness and urge to move. More common with first-generation antipsychotics but possible with any.
  • Tardive dyskinesia (TD): Involuntary, repetitive movements — usually of the face, mouth, or tongue — that can develop after long-term use. The risk is higher with first-generation medications, but real with second-generation ones, too. Because TD can become permanent, providers regularly screen for early signs.
  • Hyperprolactinemia and sexual side effects: Some antipsychotics (especially risperidone and paliperidone) raise prolactin levels, which can cause changes in menstrual cycles, breast tenderness or enlargement, sexual dysfunction, and reduced libido.
  • Emotional blunting: Positive and negative emotions may feel less intense, sometimes described as feeling numb or "flat."
  • Neuroleptic malignant syndrome (NMS): A rare but serious reaction involving high fever, severe muscle stiffness, confusion, and unstable blood pressure or heart rate. It requires immediate medical attention.

When should you see a psychiatric provider?

Speaking with a psychiatric provider for the first time can feel overwhelming. Since mental health symptoms can wax and wane and vary in their intensity, it’s not always clear when professional help is needed. You may find yourself feeling uncertain, especially if it’s the first time you’re seeking an evaluation. 

Here are some signs that psychiatric consultation may be helpful:

  • Your symptoms aren’t improving with therapy alone.
  • You’re experiencing significant disruptions to daily functioning, relationships, or work.
  • You receive a diagnosis that may involve medication management (e.g., bipolar disorder, schizophrenia, or Tourette syndrome). 
  • You receive a recommendation from a therapist or primary care provider.
  • You receive recommendations from concerned friends, family members, or loved ones. 
  • You have a family history of mental health conditions. 

Symptoms can feel scary, but they can be treated. Speaking with a health care professional is the first step, and may include therapy and psychiatric medication. 


If you or someone you know is in crisis, support is available. Call or text 988 (Suicide & Crisis Lifeline), text HOME to 741741 (Crisis Text Line), or call 911 for a mental health emergency.

Find a psychiatrist covered by your insurance

If you’re exploring antipsychotic medications, the next step is speaking with a licensed psychiatrist, psychiatric nurse practitioner, or medical doctor for an evaluation and a prescription.

Finding a mental health provider who takes your insurance doesn’t have to be complicated. With Headway, you can search for verified in-network providers who make treatment accessible and cost-effective. You can see upfront pricing and book instantly with a qualified provider.

This content is for general informational and educational purposes only and does not constitute clinical, legal, financial, or professional advice. All decisions should be made at the discretion of the individual or organization, in consultation with qualified clinical, legal, or other appropriate professionals.

© 2026 Therapymatch, Inc. dba Headway. All rights reserved. No part of this publication may be reproduced without permission.

Medication & prescriptions