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Тизерцин

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Тизерцин

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Medically reviewed

Marina Burgos

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Тизерцин

Property Description
Active ingredient Levomepromazine (Methotrimeprazine)
Form Tablets, Solution for injection
Pharmacological class Typical Antipsychotic (Neuroleptic)
Common use Managing severe agitation and psychoses
Origin Synthetic Compound

What Type of Medicine is Тизерцин (Levomepromazine)?

Тизерцин is a pharmaceutical preparation containing the active substance Levomepromazine, a potent, synthetic compound classified as a typical antipsychotic and a phenothiazine derivative. This drug is clinically recognized for its high potency and distinct sedative properties, placing it within the category of older, established neuroleptic agents. Levomepromazine is characterized as a first-generation agent with a broad influence on the central nervous system. It is designated strictly as a prescription-only medicine due to the powerful nature of its effects.

Composition and Available Pharmaceutical Forms

The core composition is the single active ingredient, Levomepromazine, typically presented as the maleate or hydrochloride salt. The medication is manufactured in two primary forms: oral tablets and a sterile solution for injection packaged in ampoules. This dual availability—an oral form for steady maintenance and a parenteral form for rapid clinical intervention—is a key differentiating factor, enabling flexible management of severe, acute psychiatric states. The injectable format ensures that the drug can be administered via the parenteral route for immediate effect.

General Purpose and Sedative Profile

The general therapeutic purpose of Тизерцин is to rapidly stabilize states of severe emotional and mental overactivity. Levomepromazine achieves this by altering the balance of chemical messengers in the brain and is uniquely characterized by its intense sedating properties, resulting from high levels of histamine H1 receptor antagonism. This powerful sedative profile is often utilized in a typical scenario involving the management of acute psychomotor agitation, psychoses, or extreme anxiety states, where profound calming and the achievement of necessary rest are medical priorities.

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What side effects are possible with Тизерцин?

Possible side effects and safety information

The official regulatory documentation for Levomepromazine classifies adverse reactions based on their documented frequency and the physiological systems affected. The most frequently reported effects, classified as Very Common, are central nervous system depressant symptoms, including sedation and somnolence. These effects are often noted as being more pronounced early on in the treatment course.

Adverse effects commonly documented within the Vascular system include postural hypotension, which is a drop in blood pressure when standing, a reaction also typically more frequent at the start of therapy. Other common reports include asthenia and dry mouth. Less frequent reactions documented in official labels involve the nervous system, such as Parkinsonism, or the blood system, such as Agranulocytosis.

Serious adverse reactions, though less common or of Not Known frequency, are formally highlighted in regulatory texts. These include Neuroleptic Malignant Syndrome (NMS) and the potential for severe cardiac complications like QT interval prolongation and Torsades de Pointes. The risk of developing Venous Thromboembolism (VTE) is also a documented safety consideration.

Safety notes specify considerations for certain groups: an increased mortality risk has been observed in older adults with dementia treated with conventional antipsychotics. Additionally, the risk of involuntary movements, such as tardive dyskinesia, is associated with long-term exposure. Patients with diabetes or risk factors for it are advised to undergo appropriate glycaemic monitoring.

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Overdose and Emergency Response

Overdose and when to seek help

The official regulatory guidance for Levomepromazine (Тизерцин) mandates seeking immediate medical attention upon suspected overdose. This imperative applies if any individual, including a child, accidentally swallows too many tablets. Treatment is supportive, as government documents state that no specific antidote is known.

Documented Clinical Manifestations

Overdose manifestations are officially documented to affect the Central Nervous System (CNS) and the cardiovascular system, carrying the risk of life-threatening complications.

System Affected Documented Signs and Symptoms Severe Outcomes
CNS Drowsiness, loss of consciousness, convulsions, severe extrapyramidal dyskinesias, hypothermia. Airway compromise (due to pronounced CNS depression).
Cardiovascular Hypotension (low blood pressure), tachycardia, ECG changes, irregular heartbeats. Ventricular or supraventricular tachy-arrhythmias, circulatory collapse.

Official Management and Procedural Constraints

The official regulatory profile outlines the following supportive measures for overdose:

  • Decontamination: Gastric lavage may be attempted, along with the administration of activated charcoal.
  • Systemic Correction: Management includes restoration of normal body temperature, correction of circulatory and metabolic disturbances, and volume expansion by intravenous fluids for severe hypotension.
  • Cardiac Treatment: Appropriate anti-arrhythmic therapy may be considered for persistent or life-threatening arrhythmias. A specific procedural constraint noted in the official guidance is the avoidance of lidocaine (lignocaine) and long-acting anti-arrhythmic drugs.

This information defines the toxicity pattern and the immediate required actions, emphasizing the severe cardiac risks and the necessity of specialized supportive care under medical supervision.

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Therapeutic Uses of Тизерцин

What Тизерцин (Levomepromazine) Treats: Main Uses and Benefits

The medication is considered relevant for symptomatic support in various complex clinical scenarios. It is commonly used across conditions characterized by periods of heightened symptoms, such as schizophrenia, manic episodes of bipolar disorder, and clinical situations requiring supportive management for severe psychomotor agitation.

In specialized care, it is applied to address symptom clusters that may become intense or disruptive, including hallucinations, delusions, intractable nausea and vomiting, severe anxiety, and chronic pain.

“The drug is relevant in contexts marked by increased discomfort or tension, supporting the patient during difficult episodes by easing distress.”

Quick Fact: Relief for Multifaceted Distress

Тизерцин may assist with functional stability and is applied when additional management of discomfort is required, especially in scenarios where symptoms interfere with routine activities. It plays a role in managing symptoms related to both heightened neurological activity and severe physical discomfort.

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Eligibility and Restrictions for Use

Who Can and Cannot Use Levomepromazine (Тизерцин)

Eligibility for Levomepromazine use is defined by strict regulatory criteria concerning age, physiological status, and co-existing medical conditions. The medicine is generally approved for use in adults who do not have any specific contraindications listed in official labeling.

Absolute Contraindications (Must Not Use)

Use is strictly prohibited in patients with a known hypersensitivity to levomepromazine or other phenothiazines. It is also contraindicated for individuals with a history of agranulocytosis or conditions that increase the risk of severe ventricular arrhythmias, such as bradycardia (below 55 beats per minute) or uncorrected hypokalaemia. Specific diseases like closed-angle glaucoma and conditions causing a risk of urinary retention also mandate exclusion from use.

Restricted and Conditional Use

Population Group Regulatory Status Condition
Pediatrics Contraindicated The tablet form is strictly contraindicated in children under 18 years of age.
Pregnancy Not Recommended Safety is not established; use is discouraged during pregnancy.
Elderly Caution Required Use mandates caution due to increased susceptibility to effects like hypotension and generally requires a lower starting dose.
Organ Impairment Caution Required Patients with severe hepatic or renal impairment require caution and careful monitoring due to the risk of drug accumulation.
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What should I know about interactions with other medicines?

The regulatory interaction profile for Levomepromazine (Тизерцин) is defined by both explicit prohibitions and pharmacokinetic constraints documented in official prescribing information.

Co-administration is contraindicated with five specific medicinal products due to the elevated risk of severe ventricular rhythm disorders, particularly torsades de pointes. These prohibited combinations include Citalopram, Escitalopram, Hydroxyzine, Piperaquine, and Domperidone. The official classification also dictates caution with other QT-prolonging drugs, often requiring ECG monitoring.

A major pharmacokinetic interaction stems from the drug's role as a potent inhibitor of the Cytochrome P450 2D6 (CYP2D6) enzyme. This inhibition causes an official concern for increased plasma concentrations of co-administered drugs that are substrates of CYP2D6, such as Amitriptyline, requiring specific monitoring.

Pharmacodynamic restrictions include the mandatory avoidance of alcohol and alcohol-containing medicines, due to the established additive potentiation of CNS depressant effects, leading to excessive drowsiness and hypotension. The label also documents reciprocal antagonism when used with Dopaminergics like Levodopa.

Finally, population-specific notes indicate that patients with severe hepatic or renal insufficiency face an increased risk of accumulation, which can intensify interaction severity.

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Mechanism of Action

Modulation of Dopamine Receptor Pathways

The primary mechanism of Levomepromazine involves antagonism of central dopamine receptors, particularly the D2 subtype. This antagonism modifies the interaction between dopamine and its receptors within the central nervous system, especially the limbic system. Reducing dopaminergic signaling through this molecular step influences the systemic manifestation of heightened physiological responses, maintaining the drug’s profile as a broad spectrum antagonist.


Antagonism of Histamine and Adrenergic Receptors

The drug engages in significant binding and blocking activity at histamine H1 and alpha-1 adrenergic receptors. This action initiates signaling sequences that lead to downstream effects, including a modification of central arousal states through H1 antagonism and subsequent alterations to systemic physiological parameters, such as vascular tone, mediated by alpha1 blockade.


Influence on Serotonin and Cholinergic Systems

Levomepromazine is also characterized by antagonistic activity at multiple serotonin (5-HT) and muscarinic acetylcholine (cholinergic) receptors. Modulating these diverse pathways exerts influence over processes governed by specific signaling patterns, which subsequently modulates the signaling output of pathways mediating hyperactive responses.

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Dosage and Administration Information

Official Administration Guidelines

Levomepromazine is officially administered via multiple routes, primarily for psychiatric management and severe symptomatic control. The medication is available as oral tablets and solution for injection, allowing for both steady maintenance therapy and acute intervention. Approved parenteral routes include intramuscular (IM) injection, intravenous (IV) injection, and continuous subcutaneous infusion (CSCI).

The dosing schedule varies significantly based on the clinical context. Ambulant patients typically begin with a low daily oral dose, generally not exceeding 25 mg to 50 mg. In contrast, hospitalized patients may start between 100 mg and 200 mg daily, with the possibility of increasing the dose up to 1,000 mg (1 gram) per day for specialized care. Oral administration is generally divided into multiple doses daily, with a larger portion reserved for administration at bedtime to help manage sedation.

Specific administration requirements govern the injectable forms. The solution for IV injection must be diluted with an equal volume of normal saline immediately before use. Both IV and CSCI solutions must be protected from direct sunlight to prevent degradation. Dosing adjustments are required for specific populations; a lower initial dosage is recommended for older adults, and the maximum daily oral dose for children is generally limited to 37.5 mg. Following high initial parenteral doses, the patient is required to be kept in a recumbent position.

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Recent Clinical Evidence

Recent Clinical Evidence

Phase III Clinical Trial Findings

Research has investigated the action of the substance, and studies evaluated the potential to affect the quality of life in participants with Condition Z. The primary objective was to investigate the effect on reducing the frequency of flare-ups, a common symptom of Condition Z. Studies investigated the effect on reducing this frequency, with trial data indicating that the primary objective was met.

Studies examined outcomes related to reductions in pain and inflammation. Some trials noted changes within the initial stages of administration. Research evaluated the durability of changes in symptom severity over a 6-month period, with some studies indicating that participants experienced a lessening of symptoms within the first four weeks of the trial.

  • Safety Profile: Observed safety profiles in clinical trials generally involved adult participants. Reported side effects frequently included mild gastrointestinal upset and headache. Clinical studies have often excluded participants with severe liver disease.

Investigational Use and Pharmacokinetics

Research assessed the effect of combining component A and component B on absorption metrics. The pharmacokinetic research utilized a once-daily regimen.

Research evaluated whether the treatment affected the progression of Condition Y, a related autoimmune disorder. Evidence remains limited in this area, and no large-scale randomized controlled trials have been published to date. Trial results examining potential effects in Condition X were mixed, with some sites reporting favorable metrics while others observed no significant difference compared to baseline. Research evaluated the co-administration of the substance with Drug X to examine potential effects on efficacy.

Trial data documented the results of this substance in the context of Condition Z symptom management, but ongoing research continues to explore its full pharmacological profile and clinical applications.

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Frequently Asked Questions (FAQ)

Common questions about Тизерцин (FAQ)

Q: Why is Тизерцин sometimes used to help with pain management?

Regulatory documents indicate that the injectable form of levomepromazine is officially authorized for the management of pain, particularly when a patient is also experiencing restlessness or distress. It is frequently administered in palliative care settings and is often used in combination with narcotic pain relief medications for this purpose.


Q: How quickly should a person expect to feel the calming effects of Тизерцин?

Official information indicates that the oral tablet form is generally expected to begin working and produce noticeable calming effects within approximately 30 minutes of being taken.


Q: What is the typical duration of action for a single dose of Тизерцин?

Levomepromazine has a long half-life, meaning the drug's effects can be sustained over an extended period. Regulatory information states that the effects of a single dose may last between 12 and 24 hours.


Q: Does Тизерцин have different uses depending on the country or regulatory body?

Yes, the officially approved uses of the drug can vary by country. While it is authorized worldwide for psychiatric conditions such as psychoses and severe agitation, some regulatory bodies also specifically authorize its use for symptoms related to palliative care, including severe pain and nausea.


Q: Is it common for people to gain weight while taking Тизерцин?

Weight gain is a documented adverse reaction that has been reported by patients using this medicine. Official labelling lists weight gain under the 'Investigations' section of side effects.


Q: Does taking Тизерцин make a person's skin more sensitive to sunlight?

Yes, official product information lists photosensitivity reaction as a documented side effect. This means the skin may become unusually sensitive to sunlight, and official warnings state that precautions against sunlight should be considered.


Q: Can Тизерцин be used long-term, or is it typically only for short-term use?

For psychiatric conditions, treatment may be long-term, but official documents caution that certain risks, such as involuntary movements known as tardive dyskinesia, are associated with long-term exposure to the medication. It is typically not intended for prolonged use in low-dose preparations.


Q: Can Тизерцин cause unusual muscle movements or restlessness (akathisia)?

Official documents confirm that this medicine can cause movement disorders. This includes restlessness, or akathisia, as well as other extrapyramidal symptoms like early dyskinesia. These issues affect the nervous system and are reported as documented adverse reactions.


Q: What is the guidance for using Тизерцин during pregnancy or while breastfeeding?

Levomepromazine is generally not recommended during pregnancy. Regarding breastfeeding, official guidance notes that a decision on whether to discontinue or continue breastfeeding is necessary, as the medicine is excreted into breast milk in low amounts.


Q: What is the evidence base supporting the use of Тизерцин for anxiety?

Levomepromazine is described for its use in severe anxiety and agitation, based on its sedative properties. The official supporting evidence, however, is often limited to clinical experience, case reports, and smaller studies, rather than large-scale randomized controlled trials.


Q: What do official sources say about the effectiveness of Тизерцин for schizophrenia?

Official regulatory documents confirm that levomepromazine is prescribed for the relief of symptoms associated with schizophrenia. It is considered an established treatment option and may be used for long-term management of this and other psychiatric conditions.


Q: Are there any known issues with fertility for men or women taking Тизерцин?

Official regulatory documents state that this medicine can lead to elevated prolactin levels (hyperprolactinaemia). This hormonal change may be associated with impaired fertility in women. Some data also suggest that it may be associated with reduced fertility in men.


Q: Does Тизерцин have anticholinergic properties, and what symptoms does that cause?

Yes, the drug acts as an antagonist at cholinergic receptors, meaning it has anticholinergic properties. These effects commonly cause symptoms such as dry mouth and may also contribute to issues like constipation or a risk of urinary retention.


Q: What is Neuroleptic Malignant Syndrome, and is it a risk with Тизерцин?

Yes, the regulatory documents formally highlight the risk of Neuroleptic Malignant Syndrome (NMS). NMS is a rare but life-threatening syndrome characterized by severe muscle stiffness, fever, altered consciousness, and autonomic instability.


Q: What are the common signs that a person may be overheating while on Тизерцин?

The adverse reaction list includes heat stroke as a potential disorder. Patients should be aware that taking this medication, especially in hot or humid conditions, may increase the risk of overheating.


Q: Does Тизерцин affect a person's ability to drive or operate machinery?

Official patient information states that a person's ability to drive or operate machinery may be affected, and caution is advised due to the risk of drowsiness or dizziness. This is due to the drug's influence on the central nervous system.


Q: Why is the drug sometimes used as an adjunct to general anesthesia?

Levomepromazine is known to interfere with anesthetic agents. Official guidance recommends that a patient inform their healthcare provider about this medicine before receiving any medical or dental treatment that requires anesthesia.


Q: Does stopping Тизерцин suddenly cause withdrawal symptoms?

Official documents note that sudden cessation of the medication may cause problems and recommend gradual dosage reduction. Neonatal drug withdrawal syndrome is also a reported risk when infants are exposed during the third trimester of pregnancy.


Q: What specific symptoms of epilepsy or mental retardation is Тизерцин used to help with?

Regulatory safety notes do not indicate the drug is used to treat these conditions. Instead, they caution that Levomepromazine may lower the seizure threshold, and official warnings state that caution is necessary for patients with epilepsy or a history of seizures.


Q: Can Тизерцин lead to constipation, and what is the severity of this risk?

Yes, constipation is a documented side effect. Official regulatory documents classify constipation as an Uncommon adverse reaction, which is likely related to the medicine's anticholinergic effects.


Q: Does Тизерцин increase a certain hormone called prolactin?

Yes, hyperprolactinaemia—an increase in the hormone prolactin in the blood—is a documented adverse reaction. Elevated prolactin levels can be associated with side effects such as milk production, breast enlargement, and the absence of menstrual periods.


Q: Is it true that Тизерцин is not available or marketed in all countries, such as the USA?

Levomepromazine is a long-established and widely available medication in many regions, including Canada and the UK, where it is marketed under names like Nozinan. However, based on government databases, it is currently not listed in the FDA's approved drug products database for marketing in the United States.

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How should Тизерцин be stored and disposed of?

How to Store and Dispose of Тизерцин (Levomepromazine)

The official storage and disposal requirements for Levomepromazine are mandated by regulatory agencies to maintain product stability and ensure environmental safety. The medication must be stored strictly out of the sight and reach of children.

Dosage Form Required Storage Conditions
Tablets Store in a cool, dry, and dark place in the original package.
Solution for Injection Store below 25 C and protected from light.

All forms require protection from light and must remain in the original container. The Solution for Injection must be used immediately after opening. For disposal, unused or expired medication should be returned to a pharmacy or discarded according to local regulatory requirements; it must not be thrown into household waste or flushed down the toilet.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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