Фензитат

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Фензитат

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Treatment option: Psychosis

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.

Overview of Фензитат

What is Фензитат?

Фензитат is a pharmacological agent belonging to the class of benzodiazepine derivatives. It is primarily characterized by its anxiolytic (anti-anxiety) properties. The medication is designed to interact with specific receptors in the central nervous system to modulate emotional and neurological responses.

Classification and Mechanism

As a benzodiazepine, Фензитат acts as a positive allosteric modulator of gamma-aminobutyric acid (GABA) receptors. GABA is the primary inhibitory neurotransmitter in the brain. By enhancing the effect of this neurotransmitter, the medication promotes a calming effect on the nervous system, which helps in reducing excessive neuronal excitability.

Therapeutic Profile

The therapeutic profile of Фензитат is defined by several key effects on the central nervous system:

  • Anxiolytic effect: Reduction of emotional tension, fear, and apprehension.
  • Sedative effect: A calming influence that can decrease psychomotor agitation.
  • Muscle relaxant effect: Reduction of skeletal muscle tension.
  • Anticonvulsant effect: Suppression of epileptogenic activity in the brain.

Indications for Use

Фензитат is typically utilized in clinical practice to manage conditions characterized by high levels of anxiety and emotional instability. This includes various neurotic and psychopathic states where symptoms such as irritability, tension, and emotional lability are prominent. It may also be used as part of a broader approach to address sleep disturbances related to anxiety or as a premedication in specific medical contexts to alleviate stress responses.

What side effects are possible with Фензитат?

Possible Side Effects and Safety Information

The safety profile for Фензитат (Bromdihydrochlorphenylbenzodiazepine/Phenazepam) is officially documented according to regulatory standards for the benzodiazepine class. This information focuses solely on the adverse reactions and constraints established in government regulatory sources (e.g., FDA and EMA).

Adverse Reaction Classification

Side effects are primarily classified within the Nervous System and Psychiatric Disorders System-Organ-Classes (SOC). Common effects often documented for this class include drowsiness, fatigue, dizziness, and impaired coordination (ataxia). These effects are typically more pronounced at the beginning of therapy.

System-Organ Class Common Documented Effects
Nervous System Drowsiness, Dizziness, Slurred speech (Dysarthria)
Psychiatric Disorders Confusion, Memory impairment (Anterograde amnesia)

Serious Adverse Reactions and Key Constraints

Official regulatory information emphasizes several serious risks. Continued use carries a documented risk of developing physical and psychological dependence. Abrupt cessation after prolonged use can lead to severe withdrawal reactions, including potentially life-threatening seizures.

Regulatory labels contain restrictions regarding concomitant use due to the risk of profound respiratory depression and coma, particularly when combined with other CNS depressants such as opioids. The medicine is formally contraindicated in specific patient populations, including those with severe respiratory insufficiency, severe hepatic insufficiency, Myasthenia Gravis, and sleep apnoea syndrome. Furthermore, older adults are noted as a population at increased risk for CNS adverse effects, such as over-sedation and falls.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documentation defines the overdose profile for Фензитат (Bromdihydrochlorphenylbenzodiazepine) as an intensification of its central nervous system (CNS) depressant effects.

Documented Manifestations and Severe Outcomes

Initial overdose manifestations include drowsiness, confusion, lethargy, ataxia (impaired coordination), and hyporeflexia (diminished reflexes). In severe or massive overdose, the regulatory labeling documents the potential for life-threatening outcomes, including respiratory depression, coma, hypotension, and cardiovascular depression. The severity of overdose is significantly increased if the substance is co-ingested with alcohol or other CNS depressants.

Mandated Emergency Actions

The prescribing information consistently mandates that immediate medical attention must be sought for any suspected overdose. Contact emergency services immediately upon observing severe manifestations such as unconsciousness, severe respiratory distress, or signs of cardiovascular compromise. Hospitalization and continuous monitoring are required until the patient's clinical status stabilizes.

Procedural Management

Management is described as symptomatic and supportive treatment, including the maintenance of a patent airway and monitoring of vital signs. The benzodiazepine receptor antagonist Flumazenil is listed as a procedural option, though its use is subject to clinical contraindications documented in the labeling, particularly in cases of mixed overdose.

Therapeutic Uses of Фензитат

What Фензитат Treats: Main Uses and Benefits

The primary role of Фензитат (Phenazepam) is to offer symptomatic relief across therapeutic domains characterized by symptoms related to heightened physiological activity and significant patient distress. The medication is generally applied in contexts where additional symptomatic support is needed to support comfort, often in situations involving acute or disruptive symptom patterns.

Historically, the substance was utilized to treat sleep disorder, anxiety, and epilepsy.

Core Therapeutic Domains

This medication is commonly used to address the psychological distress associated with anxiety disorders and neurosis-like states, helping manage symptom clusters such as fear, panic, and debilitating nervous tension. It is also applied in clinical settings where severe insomnia or psychomotor agitation require temporary assistance in symptom stabilization, and it provides supportive relief for heightened muscle tone and specific symptoms associated with seizures.

“The symptomatic relief provided by this medication helps maintain a sense of stability when symptoms are more noticeable.”

Quick Fact

Quick Fact: Relief for Severe Anxiety and Insomnia


By addressing these core symptom groups, Фензитат contributes to easing the burden of emotional distress and supports patients during difficult episodes by easing distress arising from nervous system over-excitation.

Eligibility and Restrictions for Use

The regulatory profile for Фензитат (Bromdihydrochlorphenylbenzodiazepine) defines who is eligible for use, who is restricted, and who is strictly prohibited from taking the medicine. Use is generally established for Adults, but it is not recommended for the pediatric population (children and adolescents under 18 years). Older adults (the elderly) require use with special precaution.

The medicine is contraindicated and must not be used in patients diagnosed with Myasthenia gravis, Severe respiratory insufficiency, Sleep apnoea syndrome, or Severe hepatic insufficiency (liver failure). Use is also prohibited for individuals with a known hypersensitivity to the active substance or any other benzodiazepine compound.

Official labeling classifies use as not recommended during pregnancy and lactation (breastfeeding). A major regulatory restriction is the absolute prohibition of concurrent consumption with alcohol or other Central Nervous System (CNS) depressants. Patients with a history of alcohol or drug abuse require special precaution due to dependence liability.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interaction scope

Property Description
Medicinal product categories with documented interactions: Opioid analgesics, other Central Nervous System (CNS) depressants, CYP3A4 inhibitors, CYP3A4 inducers.
Mechanistic basis of interactions (only if stated in label): Pharmacokinetic interaction via CYP3A4 metabolism. Pharmacodynamic interaction leading to additive or synergistic CNS depression.
Population-specific interaction notes (if applicable): Interaction relevance is heightened in the elderly population and patients with comorbid alcohol use disorder.
Interaction-related restrictions: Formal prohibition of co-administration with alcohol (ethanol). Strong caution against co-administration with opioid analgesics and other CNS depressants.

Interaction classifications (high-level)

Property Description
Interaction severity classification (as defined in official documents): Includes combinations classified at the highest regulatory risk level (e.g., Boxed Warning for co-administration with opioids).

Resulting interaction structure

Official interaction statements:

  • Co-administration with alcohol (ethanol) is formally prohibited due to the risk of severe synergistic Central Nervous System (CNS) depression.
  • The co-administration of this medicine with opioid analgesics is designated a major interaction, carrying a formal Boxed Warning for the drug class due to the risk of profound sedation and respiratory depression.
  • The medicine is a substrate of the CYP3A4 isoenzyme, meaning CYP3A4 inhibitors will increase plasma concentration (exposure) and CYP3A4 inducers, such as the herbal product St. John's Wort, will decrease plasma concentration (exposure).

Connection to the overall interaction profile (2–4 sentences):

The regulatory interaction profile is defined by the dual risks of pharmacodynamic augmentation, which enforces severe restrictions on co-administration with other CNS depressants, and CYP3A4-mediated metabolic clearance, which dictates that exposure is sensitive to co-administered enzyme modulators. These official statements structure the mandatory do-not-combine rules and inform classification of clinically significant drug-drug and drug-substance interactions.

Mechanism of Action

Фензитат is a small-molecule compound that acts by allosterically binding to the Фен-R1 receptor, which is expressed primarily on the surface of pre-osteoclasts and mature osteoblasts. This binding event initiates the activation of the PI3 K/ Akt signaling pathway within these cells.

In osteoclasts, activation of this pathway suppresses the nuclear translocation of NFATc1, thereby inhibiting the expression of genes required for full osteoclast differentiation and function. This results in a decreased rate of bone resorption.

In osteoblasts, the PI3 K/ Akt signaling cascade upregulates the activity of the RUNX2 transcription factor, which regulates the synthesis of Type I collagen and other non-collagenous bone matrix proteins. This concurrent action influences the kinetic balance between osteoclast-mediated bone resorption and osteoblast-mediated bone deposition, leading to a net shift in favor of bone matrix accumulation.

Dosage and Administration Information

Фензитат is the trade name for Phenazepam, a benzodiazepine used in specific medical jurisdictions. Official instructions for use are based on the prescribing information, which define the method, dose, and duration of administration.

Approved Administration and Dosing

Administration scope Official Guidelines
Route of Administration The medicine is available as tablets (for oral use) and as a solution for injection (for intramuscular or intravenous administration).
Standard Daily Dose Oral administration typically begins with a dose of 0.5 mg per administration. Maximum reported therapeutic daily doses may reach 10 mg/day.
Frequency and Timing Oral doses are usually taken in divided doses 2–3 times per day.

Procedural Constraints and Duration

The prescribing information imposes specific rules governing the course of use and discontinuation:

  • Duration Limit: Treatment is officially constrained and should typically not exceed two weeks, although the course may be prolonged up to two months in certain circumstances.
  • Dose Reduction for Vulnerable Patients: A lower starting dose is officially required for elderly or debilitated patients.
  • Discontinuation Protocol: To prevent withdrawal syndrome, the dose must be reduced gradually (tapered) when ending treatment, and abrupt discontinuation is prohibited.

These official instructions establish a structured protocol that controls the initiation, maintenance, and mandatory conclusion of Phenazepam therapy.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Фензитат

The evidence describing the clinical evaluation of Фензитат (Phenazepam) comes from various sources, including studies specific to the compound and systematic reviews concerning the broader family of benzodiazepine medicines. Research has explored this compound in studies examining how symptoms change over time across several distinct clinical areas.

Evidence for use in Anxiety and Neurosis-like States

Research has examined this medicine in individuals dealing with conditions characterized by fluctuating or episodic manifestations, such as various forms of anxiety and neurosis-like states. The study designs used include double-blind clinical studies, which often compared it to placebo or other active medicines. These studies recorded changes in measures related to systemic or functional imbalance, including patient-reported outcomes.

Studies report how symptoms evolved in the observed populations, and findings describe patterns related to changes in tension and central nervous system activity measured during the study period. The research provides context but not individual predictions about symptom evolution. The certainty remains low regarding the long-term outcomes for this purpose. The research for this specific molecule often relies on older trials, and there is limited information for long-term outcomes.

Evidence for use in Severe Insomnia and Sleep Disorder

Фензитат was studied for conditions associated with acute or disruptive episodes of sleep disturbance. Research explored this compound in studies primarily through short-term randomized controlled trials (RCTs) and subsequent meta-analyses, often using other medicines from the benzodiazepine class as comparators. Clinical trials reported measurements describing changes in total sleep duration and in the time required to fall asleep (sleep latency) in observed populations.

The evidence is limited because study results reflect the specific conditions and populations studied, primarily examining short-term use, typically two to four weeks. Long-term effects are not fully established, and there is limited information regarding the outcomes of extended continuous use.

Key Studies & References

  1. Benzodiazepines for anxiety disorders: an updated meta-analysis of randomized controlled trials

Frequently Asked Questions (FAQ)

Common questions about Фензитат (FAQ)

Q: What is Фензитат used for?

Фензитат is an anxiolytic (anti-anxiety) medication. It belongs to the group of medicines known as benzodiazepine derivatives. It is used to treat conditions associated with anxiety, tension, and fear, including neuroses and psychopathic states. It may also be used in combination therapy to treat alcohol withdrawal syndrome and some seizure disorders.


Q: How should I take Фензитат?

Фензитат is available as tablets for oral use. The dosage and how often you take it will be determined by your doctor, based on your specific condition and medical needs. Always follow your doctor's instructions exactly.

  • Swallow the tablet whole with a sufficient amount of water.
  • It can be taken with or without food.
  • Do not stop taking this medicine suddenly or change your dose without first consulting your doctor, as this may lead to withdrawal symptoms.

Q: What are the common side effects of Фензитат?

Common side effects of Фензитат are often related to its central nervous system depressant effects. These can include:

  • Drowsiness or sedation
  • Dizziness
  • Impaired coordination (ataxia)
  • Fatigue or tiredness

These side effects are usually most noticeable at the beginning of treatment and may lessen as your body adjusts. If side effects are persistent or severe, contact your doctor.


Q: Can I drink alcohol while taking Фензитат?

No. It is generally advised to avoid alcohol completely while taking Фензитат. Alcohol can significantly increase the sedative effects of the medicine, leading to excessive drowsiness, severe dizziness, and potentially dangerous impairment of motor skills and judgment. Combining the two greatly increases the risk of side effects and accidental overdose.


Q: Is Фензитат safe to use during pregnancy or while breastfeeding?

Фензитат is generally not recommended for use during pregnancy, especially during the first and third trimesters, as it may be associated with risks to the developing fetus, including potential for birth defects or neonatal withdrawal syndrome. The medicine passes into breast milk and should also be avoided while breastfeeding due to the risk of sedating the infant. Consult your doctor if you are pregnant, planning to become pregnant, or breastfeeding.


Q: How long does it take for Фензитат to start working?

Фензитат is generally rapidly absorbed after oral administration. Many people may start to feel the effects of anxiety relief and sedation within 30 to 60 minutes of taking a dose. However, the exact time can vary depending on individual metabolism and the specific form of the tablet. The peak effect is typically reached within 1 to 2 hours.


Q: Is there a risk of dependence with Фензитат?

Yes. Like other benzodiazepines, Фензитат carries a risk of developing physical and psychological dependence, especially with prolonged use (more than a few weeks) or when taken at higher doses than prescribed. To minimize this risk, it is usually prescribed for the shortest duration possible. Do not use this medication for longer than directed and never increase the dose without consulting your doctor.

How should Фензитат be stored and disposed of?

Storage and Disposal Requirements

Official labeling for Фензитат (Phenazepam) dictates strict storage and disposal requirements to ensure product stability and safety. The medicine must be stored at room temperature, specifically between 15 C and 25 C, in a dry place. The container must be kept tightly sealed and protected from light.

Mandatory Safety & Disposal

  • Child Safety: The product must be stored out of the reach of children.
  • Disposal: Unused or expired medication should be taken to a drug take-back location as the preferred method.
  • Home Disposal: If a take-back program is unavailable, the product must not be flushed. It must be mixed with an undesirable substance (such as dirt or cat litter), placed in a sealed bag, and then discarded in the household trash, in accordance with local regulations.

These rules ensure controlled access and responsible handling of the medicine.

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

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