Haloperidol
Prescription ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Haloperidol is a high-potency first-generation antipsychotic used for schizophrenia, Tourette disorder, and acute agitation or delirium-related severe behavioral disturbance when clinically appropriate. It has substantial extrapyramidal, tardive dyskinesia, neuroleptic malignant syndrome, and QT-prolongation risks, especially with high doses or parenteral use. It carries a boxed warning for increased mortality in elderly patients with dementia-related psychosis.
Exploratory record, not a reviewed medical publication.
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This generated database record has not completed a claim-level review by a qualified human medical reviewer. Bibliography links and evidence labels are not approval. The page remains available for reference and is excluded from search indexing.
What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Haloperidol is a high-potency first-generation antipsychotic used for schizophrenia, Tourette disorder, and acute agitation or delirium-related severe behavioral disturbance when clinically appropriate. NutriStack rates the supporting evidence as strong. Common adult dosing is Oral dosing is individualized; common adult starting ranges are 0.5-5 mg two or three times daily, with lower dosing in older or medically frail patients. Decanoate dosing is based on prior stable oral dose and clinical response., though a prescriber sets the actual dose. This profile indexes 3 sources.
The bottom line
Evidence rating strong. Most-documented uses: treatment of schizophrenia, control of tics and vocal utterances in tourette disorder, short-term management of severe acute agitation when benefits outweigh risks. 3 sources indexed (2020–2026), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Haloperidol primarily antagonizes dopamine D2 receptors in mesolimbic and nigrostriatal pathways, producing antipsychotic effects and extrapyramidal adverse effects. It has less anticholinergic and antihistaminic activity than low-potency antipsychotics but can cause marked dopamine blockade, hyperprolactinemia, akathisia, dystonia, parkinsonism, and tardive dyskinesia. Cardiac potassium-channel effects contribute to QT prolongation and torsades risk, especially with IV use, high doses, electrolyte abnormalities, or other QT-prolonging drugs.2,3
Dosing & protocol.
Oral haloperidol can be taken with or without food. Avoid alcohol and use caution with other sedating agents.
Full safety detail.
Side effects
- Akathisia
- Dystonia
- Parkinsonism
- Tardive dyskinesia
- Hyperprolactinemia
- Sedation
- Orthostatic hypotension
- QT prolongation and torsades de pointes
- Neuroleptic malignant syndrome
- Seizures in susceptible patients
- Anticholinergic effects, less prominent than low-potency agents
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Reviews & position papers
1- 1The American Psychiatric Association practice guideline for the treatment of patients with schizophreniaAmerican Psychiatric Association · American Journal of Psychiatry · 2020
Guideline supports monitoring antipsychotic efficacy, abnormal movements, metabolic parameters, and cardiovascular risk.
Reference material
2- 2HALOPERIDOL DECANOATE injection, US Prescribing InformationURLU.S. National Library of Medicine · DailyMed · 2026
Decanoate labeling describes maintenance use in adults previously stabilized on immediate-release haloperidol.
- 3HALOPERIDOL tablets, US Prescribing InformationURLU.S. National Library of Medicine · DailyMed · 2025
Labeling lists contraindications, dementia-related psychosis boxed warning, QT risk, and extrapyramidal adverse effects.
Common questions.
Quick answers about Haloperidol, drawn from the data on this page.
What is Haloperidol?
Haloperidol is a high-potency first-generation antipsychotic used for schizophrenia, Tourette disorder, and acute agitation or delirium-related severe behavioral disturbance when clinically appropriate. It has substantial extrapyramidal, tardive dyskinesia, neuroleptic malignant syndrome, and QT-prolongation risks, especially with high doses or parenteral use. It carries a boxed warning for increased mortality in elderly patients with dementia-related psychosis.
What is Haloperidol used for?
Commonly cited benefits of Haloperidol include: Treatment of schizophrenia; Control of tics and vocal utterances in Tourette disorder; Short-term management of severe acute agitation when benefits outweigh risks; Long-acting decanoate maintenance therapy in stabilized schizophrenia. NutriStack rates the overall evidence as strong.
What is a typical dose of Haloperidol?
A typical adult dose of Haloperidol is Oral dosing is individualized; common adult starting ranges are 0.5-5 mg two or three times daily, with lower dosing in older or medically frail patients. Decanoate dosing is based on prior stable oral dose and clinical response.. The commonly recommended form is Oral tablet or solution, short-acting injection for acute use, or decanoate injection for maintenance after oral tolerability. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Haloperidol?
Reported side effects include akathisia, dystonia, parkinsonism, tardive dyskinesia, hyperprolactinemia, sedation. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Haloperidol?
NutriStack rates this as Strong, meaning multiple high-quality meta-analyses or systematic reviews converge on the same finding. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Haloperidol in NutriStack.
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