{"formatVersion":"1.1","id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/haloperidol-uses-dosage-side-effects","path":"/library/haloperidol-uses-dosage-side-effects","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/haloperidol-uses-dosage-side-effects","title":"Haloperidol","family":"Library detail","description":"Haloperidol is an antipsychotic drug used to treat schizophrenia and mania. Learn more about how it is used, interactions, and more.","language":"en-US","access":{"audience":"custom-shared-preview","indexable":true},"provenance":{"sourceUrl":"https://www.mentalhealth.com/library/haloperidol-uses-dosage-side-effects","wordpressId":"239","contentCompleteness":"complete","dateScope":"original-source"},"authors":[{"@type":"Person","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely#person","name":"Samantha Bazely","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely"}],"reviewer":{"@type":"Person","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby#person","name":"Amy Shelby","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby"},"dates":{"datePublished":"2022-11-22T19:00:00Z","dateModified":"2025-08-13T12:25:41Z","lastReviewed":"2022-11-23"},"content":{"html":"<nav class=\"breadcrumbs\" aria-label=\"Breadcrumb\"><ol><li><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/\">Home</a></li><li><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library\">Library</a></li><li><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/medications\">Medications</a></li><li><span aria-current=\"page\">Haloperidol</span></li></ol></nav><div class=\"article-page article-standard\" data-library-standard><div class=\"article-main-grid\"><header class=\"article-heading\"><h1>Haloperidol</h1><p class=\"article-inline-credits\"><span>Written by <a class=\"article-credit-person\" href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/2418.jpg\" alt=\"\" width=\"22\" height=\"22\" loading=\"lazy\">Samantha Bazely</a></span><span>Medically reviewed by <a class=\"article-credit-person\" href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/2406.jpg\" alt=\"\" width=\"22\" height=\"22\" loading=\"lazy\">Amy Shelby</a></span></p><div class=\"article-dates\"><span>Published on <time datetime=\"2022-11-22T19:00:00Z\">November 22, 2022</time></span><span aria-hidden=\"true\"> · </span><span>Updated on <time datetime=\"2025-08-13T12:25:41Z\">August 13, 2025</time></span></div></header><div class=\"article-jumpbar\"></div><div class=\"article-layout\"><div class=\"article-reading\"><article class=\"prose\" id=\"article-content\"><div class=\"article-intro\" data-source-field=\"hero\"><p>Haloperidol is an antipsychotic medication used to treat various mental and behavioral conditions. Several medications can negatively interact with this drug. It is important to discuss any existing conditions and prescriptions with your doctor or healthcare provider before you start taking Haloperidol. Never take this drug without proper medical advice.</p></div><figure class=\"article-feature\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/library/editorial-11672.webp\" alt=\"Shelves of medicines line a pharmacy aisle.\" width=\"1200\" height=\"800\" loading=\"eager\" decoding=\"async\"></figure><section class=\"article-takeaways\" aria-labelledby=\"key-takeaways\"><h2 id=\"key-takeaways\">Key takeaways</h2><ul><li>Haloperidol is an antipsychotic used to manage certain psychotic symptoms and severe agitation or behavioral difficulties.</li><li>Dose and formulation depend on the person’s condition and require monitoring for adverse effects.</li><li>Other medicines, alcohol, and existing health conditions can change treatment risks and need review by the prescribing clinician.</li></ul></section><h2 id=\"haloperidol-brand-names\">Haloperidol brand names</h2><p>Haloperidol is also known as Haldol, Haldol decanoate, and Serenace. It is important to know that Haldol is no longer a branded product on the market, but generic alternatives are available.</p><h2 id=\"why-is-haloperidol-prescribed\">Why is haloperidol prescribed?</h2><p>Haloperidol is an antipsychotic drug used to treat certain mental health conditions, such as <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/schizophrenia\" class=\"article-inline-link\">schizophrenia</a> and <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/bipolar-disorder\" class=\"article-inline-link\">bipolar disorder</a>. Haloperidol can be used alone or in combination with other medications to treat severe behavioral problems such as <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/autism-spectrum-disorder\" class=\"article-inline-link\">autism</a> or excessive aggression. <sup><a href=\"#retrieved-october-24-2022-national-library-medicine\" aria-label=\"Reference 2\" class=\"article-inline-link article-citation\">[2]</a></sup></p><p>Haloperidol uses include but are not limited to treating psychotic disorders, uncontrolled movement and verbal tics from <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/medical-conditions\" class=\"article-inline-link\">Tourette's syndrome</a>, severe behavioral problems, schizophrenia, and hyperactivity in children when psychotherapy and other medications have failed. <sup><a href=\"#retrieved-october-24-2022-national-library-medicine-source\" aria-label=\"Reference 3\" class=\"article-inline-link article-citation\">[3]</a></sup></p><h2 id=\"how-does-haloperidol-work\">How does haloperidol work?</h2><p>Haloperidol is grouped in the antipsychotic class of drugs. The drug works by helping to restore the balance of certain natural substances in the brain and reduce anxiety. Haloperidol works by binding to dopamine receptors in the brain. <sup><a href=\"#haloperidol-haldol\" aria-label=\"Reference 1\" class=\"article-inline-link article-citation\">[1]</a></sup> This prevents dopamine from binding to those receptors and decreases abnormal brain excitement.</p><p>Decreasing the dopamine in the brain may also help to treat psychosis. In addition, haloperidol can also act as a block on other chemicals in the brain, which will help patients manage aggression, explosiveness, over-excitability, excessive movement, impulsiveness, trouble paying attention, and mood swings. <sup><a href=\"#national-library-medicine\" aria-label=\"Reference 4\" class=\"article-inline-link article-citation\">[4]</a></sup></p><h2 id=\"how-is-haloperidol-usually-taken\">How is haloperidol usually taken?</h2><p>Haloperidol is taken orally via a tablet or oral concentrate one to two times per day. The dosage depends on various conditions. Patients should follow the directions on the prescription label. The dosage may fluctuate, but it is important to continue taking it as prescribed. <sup><a href=\"#haloperidol-haldol\" aria-label=\"Reference 1\" class=\"article-inline-link article-citation\">[1]</a></sup></p><h2 id=\"how-long-does-haloperidol-stay-in-your-system\">How long does haloperidol stay in your system?</h2><p>Haloperidol has been found in the system 14.5-36.7 hours after a single oral dose. After long-term use, this drug has a half-life of up to 21 days. <sup><a href=\"#retrieved-october-24-2022-national-library-medicine\" aria-label=\"Reference 2\" class=\"article-inline-link article-citation\">[2]</a></sup></p><h2 id=\"haloperidol-side-effects\">Haloperidol side effects</h2><p>As with any new medication, it is important to watch for adverse effects and allergic reactions. Some are more severe than others, but all should be noted and discussed with your doctor. <sup><a href=\"#haloperidol-haldol\" aria-label=\"Reference 1\" class=\"article-inline-link article-citation\">[1]</a></sup></p><p>Physical side effects of Haloperidol:</p><ul><li>Drowsiness and dizziness</li><li>Involuntary movements</li><li>Difficulty falling asleep or staying asleep</li><li>Dry mouth</li><li>Increased saliva</li><li>Blurred vision</li><li>Headache</li><li>Loss of appetite</li><li>Indigestion</li><li>Vomiting</li><li>Breast enlargement or pain</li><li>Breast milk production</li><li>Missed menstrual periods</li><li>Sexual dysfunction in men</li><li>Increased sexual desire</li><li>Difficulty urinating</li><li>Weight gain</li></ul><p>Psychological side effects of Haloperidol:</p><ul><li>Anxiety</li><li>Agitation</li><li>Nervousness</li><li>Mood changes</li><li>Restlessness</li></ul><p>Call your doctor immediately if you experience any of the following side effects:</p><ul><li>Fever</li><li>Muscle stiffness</li><li>Confusion</li><li>Fast or irregular heartbeat</li><li>Chest pain</li><li>Low blood pressure</li><li>Sweating</li><li>Decreased thirst</li><li>Neck cramps</li><li>Tightness in the throat</li><li>Difficulty breathing or swallowing</li><li>Uncontrollable facial movements</li><li>Seizures</li><li>Eye pain or discoloration</li><li>Decreased vision, especially at night</li><li>Seeing everything with a brown tint</li><li>Rash</li><li>Yellowing of the skin or eyes</li><li>Erection that lasts for hours</li></ul><h2 id=\"haloperidol-precautions\">Haloperidol precautions</h2><p>It is recommended that people taking haloperidol do not drive or operate heavy machinery until they know how it will affect them.</p><p>There are some drugs and conditions that will interact poorly with haloperidol. Be sure to tell your doctor or pharmacist if you have Parkinson’s disease, bipolar disorder, prostate issues, glaucoma, heart conditions, hyperthyroidism, seizures, or low white blood cell count.</p><p>Tell your doctor if you are pregnant, plan to become pregnant while taking haloperidol, or are breastfeeding, as this drug can pass through to the baby.</p><h2 id=\"haloperidol-interactions\">Haloperidol interactions</h2><p>If taking more than one medication or supplement at a time, it is important to note that they can have negative interactions with one another. Always have a list of the medications, supplements, and vitamins you are taking to discuss with your doctor and/or pharmacist before taking haloperidol. <sup><a href=\"#available-medlineplus\" aria-label=\"Reference 5\" class=\"article-inline-link article-citation\">[5]</a></sup></p><h3 id=\"possible-medicinal-interactions\">Possible medicinal interactions</h3><p>There have been negative reported drug interactions in patients who have used haloperidol while also using anticholinergic medications, cabergoline, ketoconazole, lithium, methyldopa, Parkinson’s disease drugs, <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/paroxetine-uses-dosage-side-effects\" class=\"article-inline-link\">paroxetine</a>, pergolide, quinupristin/dalfopristin, rifampin, and saquinavir. In addition, tell your doctor if you are taking any other products that may cause drowsiness, such as opioid pain medications, cough relievers, anxiety medication, muscle relaxants, or antihistamines.</p><h3 id=\"possible-nonmedicinal-interactions\">Possible nonmedicinal interactions</h3><p>Haloperidol can increase the effects of alcohol and vice versa, increasing the potential risk of adverse reactions like dizziness and drowsiness. For this reason you should avoid drinking alcohol whilst taking haloperidol.</p><h2 id=\"haloperidol-storage\">Haloperidol storage</h2><p>In order to safely store haloperidol, you should keep it in a dry area away from direct sunlight and moisture (do not store it in the bathroom). Keep the medication in its original container and store it up and away from children and pets. If prescribed the liquid form of this drug, it is important not to let it freeze. It should be stored at room temperature.</p><h2 id=\"what-to-do-if-you-overdose-on-haloperidol\">What to do if you overdose on haloperidol</h2><p>Overdoses can happen and they have the potential to cause sudden death. If you suspect an overdose and the patient has trouble breathing or is unconscious, call 911 immediately. Call your local poison control center if the patient is alert and not in immediate danger. Symptoms of an overdose may include unusual movements of any part of the body, including peculiar or slowed movement, stiff or weak muscles, and slowed breathing. Sleepiness and loss of consciousness are also symptoms to watch for. <sup><a href=\"#available-medlineplus\" aria-label=\"Reference 5\" class=\"article-inline-link article-citation\">[5]</a></sup></p><h2 id=\"faqs-about-haloperidol\">FAQs about haloperidol</h2><h3 id=\"how-long-does-it-take-for-haloperidol-to-work\">How long does it take for haloperidol to work?</h3><p>Haloperidol can work within the hour, depending on the dosage and the condition it is treating. However, for most antipsychotic treatments, it will take several weeks to determine if haloperidol is working. <sup><a href=\"#retrieved-october-24-2022-national-library-medicine\" aria-label=\"Reference 2\" class=\"article-inline-link article-citation\">[2]</a></sup></p><h3 id=\"is-haloperidol-addictive\">Is haloperidol addictive?</h3><p>Haloperidol is often used over a long period of time for treatment purposes. However, it is <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/are-antipsychotics-addictive\" class=\"article-inline-link\">not typically a drug that is abused</a>, as it can cause psychosis in people who are not taking it for a diagnosed condition.</p><h3 id=\"haloperidol-vs-lorazepam-what-s-the-difference\">Haloperidol vs. Lorazepam: What’s the difference?</h3><p><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/lorazepam-uses-dosage-side-effects\" class=\"article-inline-link\">Lorazepam</a> is an antianxiety medication to reduce anxiety in patients. This medication does help individuals relax, but it is different from Haloperidol because the latter aims to help the patient, calm agitation, stabilize their mood, and help to control negative thoughts.</p></article><div class=\"article-endmatter\"><section class=\"article-sources\" id=\"references\" data-source-references=\"\" data-reference-list=\"\" data-reference-style=\"author-date-numbered\"><h2 id=\"references-2\">References</h2><ol>\n<li id=\"haloperidol-haldol\" data-reference-number=\"1\">National Alliance on Mental Illness. (n.d.). Haloperidol (Haldol). NAMI. Retrieved October 24, 2022, from <a target=\"_blank\" href=\"https://www.nami.org/About-Mental-Illness/Treatments/Mental-Health-Medications/Types-of-Medication/Haloperidol-(Haldol)\" rel=\"nofollow noopener noreferrer\">NAMI</a></li>\n<li id=\"retrieved-october-24-2022-national-library-medicine\" data-reference-number=\"2\">NCBI Haloperidol. National Library of Medicine. (2022, June 4). Retrieved October 24, 2022, from <a target=\"_blank\" href=\"https://www.ncbi.nlm.nih.gov/books/NBK560892/\" rel=\"nofollow noopener noreferrer\">National Library of Medicine</a></li>\n<li id=\"retrieved-october-24-2022-national-library-medicine-source\" data-reference-number=\"3\">Haloperidol for psychosis‐induced aggression or agitation (rapid tranquillisation). National Library of Medicine. (2017, July 31). Retrieved October 24, 2022, from <a target=\"_blank\" href=\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6483410/\" rel=\"nofollow noopener noreferrer\">National Library of Medicine</a></li>\n<li id=\"national-library-medicine\" data-reference-number=\"4\">The effects of haloperidol on dopamine receptor gene expression. (n.d.). National Library of Medicine. Retrieved October 24, 2022, from <a target=\"_blank\" href=\"https://pubmed.ncbi.nlm.nih.gov/7867758/\" rel=\"nofollow noopener noreferrer\">PubMed</a></li>\n<li id=\"available-medlineplus\" data-reference-number=\"5\">MedlinePlus [Internet]. National Library of Medicine. Haloperidol: MedlinePlus Drug Information. (n.d.). Available from <a target=\"_blank\" href=\"https://medlineplus.gov/druginfo/meds/a682180.html\" rel=\"nofollow noopener noreferrer\">MedlinePlus</a></li>\n</ol></section><section class=\"article-medical article-panel\"><h2 id=\"medical-content\">Medical Content</h2><p><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/clinical-affairs\">The Clinical Affairs Team</a> at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. For more information, please visit the <a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/publishing/editorial-policy\">Editorial Policy</a>.</p></section><section class=\"article-about article-panel\"><h2 id=\"about-mentalhealth-com\">About MentalHealth.com</h2><p>MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life.</p><div class=\"article-contributors\"><section class=\"article-bio\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/2418.jpg\" alt=\"\" width=\"64\" height=\"64\" loading=\"lazy\"><div><p class=\"article-bio-role\">Author</p><h3 id=\"samantha-bazely\"><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely\">Samantha Bazely</a></h3><p class=\"article-bio-credentials\">Writer</p><p>Samantha Bazely is a medical writer with a background that includes a Bachelor of Arts degree in Communications from Augustana College.</p><dl><div><dt>Published</dt><dd><time datetime=\"2022-11-22T19:00:00Z\">November 22, 2022</time></dd></div><div><dt>Updated</dt><dd><time datetime=\"2025-08-13T12:25:41Z\">August 13, 2025</time></dd></div></dl></div></section><section class=\"article-bio\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/2406.jpg\" alt=\"\" width=\"64\" height=\"64\" loading=\"lazy\"><div><p class=\"article-bio-role\">Medical Reviewer</p><h3 id=\"amy-shelby\"><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby\">Amy Shelby</a></h3><p class=\"article-bio-credentials\">M.S. Counseling Psychology</p><p>Amy Shelby is a medical reviewer with a B.A. in Psychology from Northwestern and an M.S. in Psychology from Chatham University.</p><dl><div><dt>Reviewed</dt><dd><time datetime=\"2022-11-23\">November 23, 2022</time></dd></div></dl></div></section></div></section><section class=\"article-expert article-expert-mobile\" aria-label=\"Subject matter expert\" data-expert-kind=\"related\"><p class=\"article-bio-role\">Subject matter expert</p><div class=\"article-expert-identity\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/3060.webp\" alt=\"\" width=\"64\" height=\"64\" loading=\"lazy\"><h2><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/leila-khurshid\">Leila Khurshid, Pharm.D.</a></h2></div><p class=\"article-expert-focus\">Clinical pharmacy and medication</p><a class=\"profile-experience-link experience-button\" href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/leila-khurshid\">View experience</a></section><section class=\"article-topic-community article-topic-community-mobile\" aria-label=\"Related communities\"><img class=\"topic-community-banner\" src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/library/editorial-17234.webp\" alt=\"\" width=\"48\" height=\"48\" loading=\"lazy\"><p class=\"topic-community-label\">Related communities</p><h2>Medications</h2><p>Explore questions and perspectives about psychiatric medications and the treatment experience.</p><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/community/medications\">Explore community</a></section></div></div><aside class=\"article-sidebar\" tabindex=\"0\" data-bounded-rail=\"\" aria-label=\"Article navigation and related information\"><details class=\"article-contents\" open data-section-preview=\"3\" data-expanded=\"false\" data-scrolled-past=\"false\"><summary><strong>Table of contents</strong><span aria-hidden=\"true\"></span><small data-current-section=\"\">Choose a section</small></summary><nav aria-label=\"Article contents\"><ol id=\"article-section-list\"><li><a href=\"#haloperidol-brand-names\" title=\"Haloperidol brand names\" aria-label=\"Haloperidol brand names\">Haloperidol brand names</a></li><li><a href=\"#why-is-haloperidol-prescribed\" title=\"Why is haloperidol prescribed?\" aria-label=\"Why is haloperidol prescribed?\">Why is haloperidol prescribed?</a></li><li><a href=\"#how-does-haloperidol-work\" title=\"How does haloperidol work?\" aria-label=\"How does haloperidol work?\">How does haloperidol work?</a></li><li><a href=\"#how-is-haloperidol-usually-taken\" title=\"How is haloperidol usually taken?\" aria-label=\"How is haloperidol usually taken?\">How is haloperidol usually taken?</a></li><li><a href=\"#how-long-does-haloperidol-stay-in-your-system\" title=\"How long does haloperidol stay in your system?\" aria-label=\"How long does haloperidol stay in your system?\">How long does haloperidol stay in your system?</a></li><li><a href=\"#haloperidol-side-effects\" title=\"Haloperidol side effects\" aria-label=\"Haloperidol side effects\">Haloperidol side effects</a></li><li><a href=\"#haloperidol-precautions\" title=\"Haloperidol precautions\" aria-label=\"Haloperidol precautions\">Haloperidol precautions</a></li><li><a href=\"#haloperidol-interactions\" title=\"Haloperidol interactions\" aria-label=\"Haloperidol interactions\">Haloperidol interactions</a></li><li><a href=\"#haloperidol-storage\" title=\"Haloperidol storage\" aria-label=\"Haloperidol storage\">Haloperidol storage</a></li><li><a href=\"#what-to-do-if-you-overdose-on-haloperidol\" title=\"What to do if you overdose on haloperidol\" aria-label=\"What to do if you overdose on haloperidol\">What to do if you overdose on haloperidol</a></li><li><a href=\"#faqs-about-haloperidol\" title=\"FAQs about haloperidol\" aria-label=\"FAQs about haloperidol\">FAQs about haloperidol</a></li></ol><button type=\"button\" class=\"article-sections-toggle\" data-sections-toggle aria-controls=\"article-section-list\" aria-expanded=\"false\">View more</button></nav></details><section class=\"article-expert\" aria-label=\"Subject matter expert\" data-expert-kind=\"related\"><p class=\"article-bio-role\">Subject matter expert</p><div class=\"article-expert-identity\"><img src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/3060.webp\" alt=\"\" width=\"64\" height=\"64\" loading=\"lazy\"><h2><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/leila-khurshid\">Leila Khurshid, Pharm.D.</a></h2></div><p class=\"article-expert-focus\">Clinical pharmacy and medication</p><a class=\"profile-experience-link experience-button\" href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/leila-khurshid\">View experience</a></section><section class=\"article-topic-community\" aria-label=\"Related communities\"><img class=\"topic-community-banner\" src=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/library/editorial-17234.webp\" alt=\"\" width=\"48\" height=\"48\" loading=\"lazy\"><p class=\"topic-community-label\">Related communities</p><h2>Medications</h2><p>Explore questions and perspectives about psychiatric medications and the treatment experience.</p><a href=\"https://mentalhealth-v2.workspace-454808.chatgpt.site/community/medications\">Explore community</a></section></aside></div></div></div>","text":"HomeLibraryMedicationsHaloperidolHaloperidolWritten by Samantha BazelyMedically reviewed by Amy ShelbyPublished on November 22, 2022 · Updated on August 13, 2025Haloperidol is an antipsychotic medication used to treat various mental and behavioral conditions. Several medications can negatively interact with this drug. It is important to discuss any existing conditions and prescriptions with your doctor or healthcare provider before you start taking Haloperidol. Never take this drug without proper medical advice.Key takeawaysHaloperidol is an antipsychotic used to manage certain psychotic symptoms and severe agitation or behavioral difficulties.Dose and formulation depend on the person’s condition and require monitoring for adverse effects.Other medicines, alcohol, and existing health conditions can change treatment risks and need review by the prescribing clinician.Haloperidol brand namesHaloperidol is also known as Haldol, Haldol decanoate, and Serenace. It is important to know that Haldol is no longer a branded product on the market, but generic alternatives are available.Why is haloperidol prescribed?Haloperidol is an antipsychotic drug used to treat certain mental health conditions, such as schizophrenia and bipolar disorder. Haloperidol can be used alone or in combination with other medications to treat severe behavioral problems such as autism or excessive aggression. [2]Haloperidol uses include but are not limited to treating psychotic disorders, uncontrolled movement and verbal tics from Tourette's syndrome, severe behavioral problems, schizophrenia, and hyperactivity in children when psychotherapy and other medications have failed. [3]How does haloperidol work?Haloperidol is grouped in the antipsychotic class of drugs. The drug works by helping to restore the balance of certain natural substances in the brain and reduce anxiety. Haloperidol works by binding to dopamine receptors in the brain. [1] This prevents dopamine from binding to those receptors and decreases abnormal brain excitement.Decreasing the dopamine in the brain may also help to treat psychosis. In addition, haloperidol can also act as a block on other chemicals in the brain, which will help patients manage aggression, explosiveness, over-excitability, excessive movement, impulsiveness, trouble paying attention, and mood swings. [4]How is haloperidol usually taken?Haloperidol is taken orally via a tablet or oral concentrate one to two times per day. The dosage depends on various conditions. Patients should follow the directions on the prescription label. The dosage may fluctuate, but it is important to continue taking it as prescribed. [1]How long does haloperidol stay in your system?Haloperidol has been found in the system 14.5-36.7 hours after a single oral dose. After long-term use, this drug has a half-life of up to 21 days. [2]Haloperidol side effectsAs with any new medication, it is important to watch for adverse effects and allergic reactions. Some are more severe than others, but all should be noted and discussed with your doctor. [1]Physical side effects of Haloperidol:Drowsiness and dizzinessInvoluntary movementsDifficulty falling asleep or staying asleepDry mouthIncreased salivaBlurred visionHeadacheLoss of appetiteIndigestionVomitingBreast enlargement or painBreast milk productionMissed menstrual periodsSexual dysfunction in menIncreased sexual desireDifficulty urinatingWeight gainPsychological side effects of Haloperidol:AnxietyAgitationNervousnessMood changesRestlessnessCall your doctor immediately if you experience any of the following side effects:FeverMuscle stiffnessConfusionFast or irregular heartbeatChest painLow blood pressureSweatingDecreased thirstNeck crampsTightness in the throatDifficulty breathing or swallowingUncontrollable facial movementsSeizuresEye pain or discolorationDecreased vision, especially at nightSeeing everything with a brown tintRashYellowing of the skin or eyesErection that lasts for hoursHaloperidol precautionsIt is recommended that people taking haloperidol do not drive or operate heavy machinery until they know how it will affect them.There are some drugs and conditions that will interact poorly with haloperidol. Be sure to tell your doctor or pharmacist if you have Parkinson’s disease, bipolar disorder, prostate issues, glaucoma, heart conditions, hyperthyroidism, seizures, or low white blood cell count.Tell your doctor if you are pregnant, plan to become pregnant while taking haloperidol, or are breastfeeding, as this drug can pass through to the baby.Haloperidol interactionsIf taking more than one medication or supplement at a time, it is important to note that they can have negative interactions with one another. Always have a list of the medications, supplements, and vitamins you are taking to discuss with your doctor and/or pharmacist before taking haloperidol. [5]Possible medicinal interactionsThere have been negative reported drug interactions in patients who have used haloperidol while also using anticholinergic medications, cabergoline, ketoconazole, lithium, methyldopa, Parkinson’s disease drugs, paroxetine, pergolide, quinupristin/dalfopristin, rifampin, and saquinavir. In addition, tell your doctor if you are taking any other products that may cause drowsiness, such as opioid pain medications, cough relievers, anxiety medication, muscle relaxants, or antihistamines.Possible nonmedicinal interactionsHaloperidol can increase the effects of alcohol and vice versa, increasing the potential risk of adverse reactions like dizziness and drowsiness. For this reason you should avoid drinking alcohol whilst taking haloperidol.Haloperidol storageIn order to safely store haloperidol, you should keep it in a dry area away from direct sunlight and moisture (do not store it in the bathroom). Keep the medication in its original container and store it up and away from children and pets. If prescribed the liquid form of this drug, it is important not to let it freeze. It should be stored at room temperature.What to do if you overdose on haloperidolOverdoses can happen and they have the potential to cause sudden death. If you suspect an overdose and the patient has trouble breathing or is unconscious, call 911 immediately. Call your local poison control center if the patient is alert and not in immediate danger. Symptoms of an overdose may include unusual movements of any part of the body, including peculiar or slowed movement, stiff or weak muscles, and slowed breathing. Sleepiness and loss of consciousness are also symptoms to watch for. [5]FAQs about haloperidolHow long does it take for haloperidol to work?Haloperidol can work within the hour, depending on the dosage and the condition it is treating. However, for most antipsychotic treatments, it will take several weeks to determine if haloperidol is working. [2]Is haloperidol addictive?Haloperidol is often used over a long period of time for treatment purposes. However, it is not typically a drug that is abused, as it can cause psychosis in people who are not taking it for a diagnosed condition.Haloperidol vs. Lorazepam: What’s the difference?Lorazepam is an antianxiety medication to reduce anxiety in patients. This medication does help individuals relax, but it is different from Haloperidol because the latter aims to help the patient, calm agitation, stabilize their mood, and help to control negative thoughts.References National Alliance on Mental Illness. (n.d.). Haloperidol (Haldol). NAMI. Retrieved October 24, 2022, from NAMI NCBI Haloperidol. National Library of Medicine. (2022, June 4). Retrieved October 24, 2022, from National Library of Medicine Haloperidol for psychosis‐induced aggression or agitation (rapid tranquillisation). National Library of Medicine. (2017, July 31). Retrieved October 24, 2022, from National Library of Medicine The effects of haloperidol on dopamine receptor gene expression. (n.d.). National Library of Medicine. Retrieved October 24, 2022, from PubMed MedlinePlus [Internet]. National Library of Medicine. Haloperidol: MedlinePlus Drug Information. (n.d.). Available from MedlinePlus Medical ContentThe Clinical Affairs Team at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. For more information, please visit the Editorial Policy.About MentalHealth.comMentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life.AuthorSamantha BazelyWriterSamantha Bazely is a medical writer with a background that includes a Bachelor of Arts degree in Communications from Augustana College.PublishedNovember 22, 2022UpdatedAugust 13, 2025Medical ReviewerAmy ShelbyM.S. Counseling PsychologyAmy Shelby is a medical reviewer with a B.A. in Psychology from Northwestern and an M.S. in Psychology from Chatham University.ReviewedNovember 23, 2022Subject matter expertLeila Khurshid, Pharm.D.Clinical pharmacy and medicationView experienceRelated communitiesMedicationsExplore questions and perspectives about psychiatric medications and the treatment experience.Explore communityTable of contentsChoose a sectionHaloperidol brand namesWhy is haloperidol prescribed?How does haloperidol work?How is haloperidol usually taken?How long does haloperidol stay in your system?Haloperidol side effectsHaloperidol precautionsHaloperidol interactionsHaloperidol storageWhat to do if you overdose on haloperidolFAQs about haloperidolView moreSubject matter expertLeila Khurshid, Pharm.D.Clinical pharmacy and medicationView experienceRelated communitiesMedicationsExplore questions and perspectives about psychiatric medications and the treatment experience.Explore community","wordCount":1346},"schema":{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/#organization","name":"MentalHealth.com","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/"},{"@type":"WebSite","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/#website","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/","name":"MentalHealth.com","inLanguage":"en-US","publisher":{"@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/#organization"}},{"@type":"BreadcrumbList","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/haloperidol-uses-dosage-side-effects#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://mentalhealth-v2.workspace-454808.chatgpt.site/"},{"@type":"ListItem","position":2,"name":"Library","item":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library"},{"@type":"ListItem","position":3,"name":"Medications","item":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/medications"},{"@type":"ListItem","position":4,"name":"Haloperidol","item":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/haloperidol-uses-dosage-side-effects"}]},{"@type":"ImageObject","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/library/haloperidol-uses-dosage-side-effects#primaryimage","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/library/editorial-11672.webp","contentUrl":"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/library/editorial-11672.webp","width":1200,"height":800,"encodingFormat":"image/webp","caption":"Shelves of medicines line a pharmacy aisle."},{"@type":"Person","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely#person","name":"Samantha Bazely","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/samantha-bazely","jobTitle":"Writer","image":"https://mentalhealth-v2.workspace-454808.chatgpt.site/assets/wordpress/2418.jpg","sameAs":["https://www.linkedin.com/in/samantha-bazely/"]},{"@type":"Person","@id":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby#person","name":"Amy Shelby","url":"https://mentalhealth-v2.workspace-454808.chatgpt.site/people/amy-shelby","jobTitle":"M.S. 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