Zuclopenthixol (Clopixol, Acuphase): Why This Thioxanthene Is Not in U.S. Pharmacies and What Telehealth Can Still Do

Last updated: August 24, 2026

Zuclopenthixol is a first-generation thioxanthene antipsychotic sold abroad as Clopixol, Clopixol Acuphase, and Clopixol Depot (and as Cisordinol in some countries). Clinicians use oral tablets, a short-acting acetate injection for acute psychosis, and a long-acting decanoate depot for maintenance in schizophrenia. It is not approved in the United States. If you or a family member used Clopixol overseas, a U.S. licensed clinician can still review symptoms, discuss FDA-available alternatives, and plan follow-up by video.

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TLDR

• Zuclopenthixol is a thioxanthene neuroleptic for schizophrenia. Brands include Clopixol, Clopixol Acuphase, and Clopixol Depot. See DrugBank DB01624.
• Health Canada’s Clopixol monograph (Lundbeck, authorized July 18, 2025) lists oral 10 and 25 mg tablets, Acuphase 50 mg/mL acetate, and Depot 200 mg/mL decanoate for the manifestations of schizophrenia.
• Acuphase onset is 2-4 hours; duration is 2-3 days. Treatment should not exceed two weeks, four injections, or 400 mg cumulative. Usual acetate dose is 50-150 mg IM every 2-3 days.
• Usual oral range is 20-60 mg/day (start 10-50 mg; max 100 mg/day). Usual depot maintenance is 150-300 mg IM every 2-4 weeks.
• A Cochrane review of zuclopenthixol acetate vs standard acute care found low-quality evidence and no clear advantage on mental state. U.S. patients cannot fill Clopixol here. Telehealth can still evaluate psychosis, anxiety, and depression and discuss medicines U.S. pharmacies stock. Coverage varies by plan; verify benefits before you book.

What people ask about zuclopenthixol

• What is zuclopenthixol (Clopixol, Acuphase)?
• Is Clopixol available in the United States?
• How do clinicians dose oral, acetate, and depot zuclopenthixol?
• What does research say about Acuphase for acute psychosis?
• What side effects and warnings matter?
• What can U.S. telehealth still do?
• FAQ

What is zuclopenthixol (Clopixol, Acuphase)?

DrugBank describes zuclopenthixol as a thioxanthene-based neuroleptic with actions similar to phenothiazine antipsychotics. It is an antagonist at D1 and D2 dopamine receptors (and also binds 5-HT2A and alpha-1A). It is metabolized by CYP2D6. Major brands are Clopixol, Clopixol Acuphase, and Cisordinol. DrugBank notes approval in Canada in 2011 and no U.S. approval.

The Canadian product monograph (Lundbeck Canada, Date of Authorization July 18, 2025, Control Number 294958) states Clopixol tablets, Clopixol Acuphase, and Clopixol Depot are indicated for the management of the manifestations of schizophrenia (Health Canada / Lundbeck, July 18, 2025). Tablets may be used for initial and maintenance treatment. Acuphase is for the initial treatment of acute psychotic episodes or exacerbation of psychosis. Depot is for maintenance. Health Canada has not authorized pediatric use under age 18.

That split of three formulations is the clinical personality of the drug. Flupentixol (Fluanxol) is steered toward quieter, non-agitated chronic pictures. Zuclopenthixol acetate is the opposite: a short-acting IM option when oral adherence is unreliable during an acute flare.

Is Clopixol available in the United States?

No. DrugBank states zuclopenthixol is not approved for use in the United States. A 2022 practical LAI review lists flupentixol decanoate and zuclopenthixol decanoate among first-generation long-acting injectables approved in the EU but not in the U.S. (PMC9809355).

People search “zuclopenthixol,” “Clopixol,” and “Acuphase” after a move from Canada, the UK, Australia, or Europe, or after a family member’s depot clinic. The U.S. answer is substitution with an FDA-available oral or long-acting antipsychotic, not a Clopixol transfer. Do not import unlabeled depot or acetate ampoules. A clinician licensed in your state should redesign the plan.

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How do clinicians dose oral, acetate, and depot zuclopenthixol?

These figures are from the Canadian Clopixol monograph. They are not a U.S. prescribing guide.

Oral tablets (10 mg and 25 mg as hydrochloride). Start in two or three divided doses. For acute psychosis the usual start is 10-50 mg/day, increased by 10-20 mg every 2-3 days. Usual therapeutic range is 20-60 mg daily. Daily doses above 100 mg are not recommended. Usual maintenance is 20-40 mg/day, often as a single nighttime dose once stable.

Clopixol Acuphase (zuclopenthixol acetate 50 mg/mL IM). Onset within 2-4 hours; duration 2-3 days after one injection. Significant dose-dependent sedation occurs within 2 hours and usually peaks at 8 hours. Peak serum levels average 24-48 hours after injection. Usual dose is 50-150 mg (1-3 mL) IM, repeated if needed every 2-3 days. Some people need another injection 1 or 2 days after the first. Acuphase is not for long-term use: duration should not exceed two weeks, injections should not exceed four, and cumulative dose should not exceed 400 mg. Deep IM into the gluteal region; volumes over 2 mL should be split between two sites.

Clopixol Depot (zuclopenthixol decanoate 200 mg/mL IM). For maintenance after stabilization on oral or short-acting medicine. Usual maintenance is 150-300 mg IM every 2-4 weeks. Some people need higher or lower doses or shorter intervals. Supplemental oral medicine may be needed in a diminishing dose after the first depot.

Suggested conversions (monograph tables). Acuphase 50 / 100 / 150 mg maps to oral 20 / 40 / 60 mg daily, or to depot 100 / 200 / 300 mg every 2 weeks. Oral up to 20 mg daily maps to depot 100 mg every 2 weeks; 25-40 mg oral to 200 mg depot; 50-75 mg oral to 300 mg depot; more than 75 mg oral to 400 mg depot every 2 weeks. Acuphase and Depot can be mixed in one syringe for a chronic-psychosis flare because they share the same vehicle. Acuphase cannot be mixed with other depot antipsychotics.

Oral tablets start 2 to 3 days after the last Acuphase injection. Depot can be given with the last Acuphase injection.

What does research say about Acuphase for acute psychosis?

The Cochrane review “Zuclopenthixol acetate for acute schizophrenia and similar serious mental illnesses” (Jayakody, Gibson, Kumar, Gunadasa; PMC4175533, CD000525) compared acetate with standard acute drug care. Evidence quality was low (unclear allocation, small trials, wide confidence intervals).

On mental state, “no important improvement” at 6-9 days had RR 0.86 (0.39 to 1.86) across 188 people in 2 studies: no clear difference. Need for three or more injections over 7 days favored acetate in one 70-person study (RR 0.39, 0.18 to 0.84), but that is a process outcome, not a recovery outcome. Dystonia by 24 hours did not clearly differ (RR 0.68, 0.34 to 1.36; 242 people, 3 studies). High-dose vs low-dose acetate (one 30-person study) did not show a clear mental-state gain and had a wide interval on extrapyramidal effects.

In plain language: Acuphase is a convenient 2-3 day IM option on the Canadian label. The randomized evidence does not prove it is better than standard acute antipsychotics for how people feel a week later.

What side effects and warnings matter?

The Canadian boxed warnings include neuroleptic malignant syndrome and increased mortality in geriatric patients with dementia. Clopixol is not approved for dementia-related psychosis.

Contraindications include acute alcohol, barbiturate, or opiate intoxication; CNS depression, coma, suspected subcortical brain damage, or circulatory collapse; and hypersensitivity to the drug or other thioxanthenes.

Acuphase causes dose-dependent sedation within 2 hours. Tolerance to sedation may appear with repeat injections. First-generation antipsychotics as a class carry extrapyramidal symptoms, tardive dyskinesia risk, and anticholinergic and cardiovascular cautions. Abrupt stop can bring withdrawal (nausea, insomnia, restlessness, anxiety) that usually starts in 1-4 days and eases in 7-14 days.

None of this is a reason to import unlabeled ampoules. A U.S. clinician who is licensed in your state should pick an FDA-available medicine and watch side effects in follow-up.

What can U.S. telehealth still do?

Klarity’s network includes 2,000+ licensed clinicians. A video visit can review psychosis, anxiety, depression, and related symptoms; discuss FDA-available oral antipsychotics and, when appropriate, refer for in-person long-acting injections; and plan follow-up. Acute agitation, suspected NMS, or a first-break emergency needs local emergency care, not a routine telehealth slot.

HHS notes that recent legislation extended many Medicare telehealth flexibilities through December 31, 2027 (HHS telehealth policy updates, Feb 5, 2026). Commercial coverage still varies by plan. Verify benefits before you book.

See how online mental health visits work or start from a condition page.

If you are in crisis, call or text 988 (Suicide & Crisis Lifeline) or use local emergency services.

FAQ

Is zuclopenthixol the same as flupentixol?

No. Both are thioxanthenes used for schizophrenia outside the U.S. Flupentixol (Fluanxol, Depixol) is often labeled for non-agitated chronic maintenance. Zuclopenthixol acetate (Acuphase) is labeled for acute flares. Neither is FDA-approved.

Can a U.S. clinician prescribe Clopixol?

U.S. pharmacies do not stock Clopixol. A licensed clinician can discuss FDA-available alternatives. Coverage for those alternatives may vary by plan.

What is the difference between Acuphase and Depot?

Acuphase is zuclopenthixol acetate: short-acting IM, 2-3 days, max two weeks / four injections / 400 mg. Depot is zuclopenthixol decanoate: maintenance every 2-4 weeks after you are already stable.

Does insurance cover a telehealth evaluation if I used Clopixol abroad?

Many plans may cover a mental health video visit. Coverage varies by plan and state. Verify benefits before you book. This is not a guarantee of coverage.

This article is educational. It is not medical advice, a diagnosis, or a promise of a specific prescription. Zuclopenthixol is not available in the United States. Always confirm medicines and benefits with a licensed clinician and your insurer.