Lexotanil

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Lexotanil

Medically reviewed

Laura Arias

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 Lexotanil

Property Description
Active Ingredient Bromazepam
Form Oral Tablet
Pharmacological Class Benzodiazepine (Anxiolytic)
Status Prescription-only (Rx)
Action Profile Intermediate-acting

What is Lexotanil, and What is its Active Ingredient?

Lexotanil is a brand name for the prescription drug known generically as bromazepam. Bromazepam is a synthetic compound, meaning it is a chemical substance created in a laboratory, and it serves as the single active ingredient in Lexotanil tablets. Because of its potential for dependence, Lexotanil is strictly a prescription-only (Rx) medicine, managed and dispensed under professional medical supervision.

As a CNS depressant, bromazepam acts to relieve anxiety. The primary effect of the medicine is to calm overactive nerve signals, easing discomfort caused by agitation and tension.

What Type of Medicine is Lexotanil?

Lexotanil belongs to the major pharmacological class of drugs called benzodiazepines and is commonly taken as an oral tablet. The tablet form is supplied for oral administration, where the medicine is absorbed through the digestive tract. Bromazepam is clinically recognized as an intermediate-acting benzodiazepine, meaning its effects last longer than those of short-acting agents.

Bromazepam is characterized as an anxiolytic medicine, or a medicine used to treat anxiety. This designation refers to the drug's role in promoting relaxation and reducing feelings of tension and excessive worry. The drug's function is based on slowing nerve signaling, providing general muscle relaxation and sedation.

What side effects are possible with Lexotanil?

Possible Side Effects and Safety Information

The safety profile of Lexotanil (bromazepam) is defined by its classification as a central nervous system (CNS) depressant, according to regulatory authorities. The most frequently observed adverse reactions are those related to CNS depression, which tend to be more noticeable at the start of treatment and may decrease with continued use.

Frequency-Classified Adverse Reactions

Adverse reactions are officially grouped by the frequency of observation:

  • Very Common: Sedation, somnolence (drowsiness).
  • Common: Dizziness, headache, fatigue, muscular weakness, and reduced alertness.

Other less common reactions are grouped into official System-Organ Classes, including Psychiatric Disorders (e.g., confusion, nervousness, or, rarely, paradoxical reactions like agitation) and Gastrointestinal Disorders (e.g., constipation or nausea).

Serious Safety Considerations and Constraints

A primary regulatory concern is the risk of dependence, both physical and psychological. Official documentation states that this risk increases with the dose and duration of treatment. Consequently, withdrawal phenomena may occur upon cessation, which can range from mild effects to serious reactions.

Furthermore, the label specifies key safety restrictions:

  • Contraindications: Lexotanil is officially contraindicated in patients with severe respiratory insufficiency (including sleep apnoea syndrome) and severe hepatic insufficiency (liver impairment).
  • Vulnerable Populations: Regulatory documents highlight that older adults are more sensitive to the CNS effects, increasing the risk of sedation, confusion, and falls.

Overdose and Emergency Response

Overdose and when to seek help

Lexotanil overdose is officially documented as a state of Central Nervous System (CNS) depression, ranging in severity from mild to life-threatening. The clinical signs listed in regulatory documents include drowsiness, confusion, lethargy, ataxia (lack of co-ordination), and slurred speech.

Severe Outcomes and Emergency Action

Overdose progression may lead to severe, documented outcomes such as respiratory depression and coma. The risk of these severe events, including death, is significantly increased by co-ingestion with other CNS depressants, such as alcohol or opioids.

Regulatory authorities explicitly mandate that individuals seek immediate medical attention and contact a medical professional or go to a hospital straight away if an overdose is suspected. The immediate care focuses on symptomatic and supportive treatment, including maintaining vital functions. The benzodiazepine reversal agent, Flumazenil, may be used in defined supportive protocol settings. Official documents also note that elderly patients and those with co-ingestion risks face greater severity.

Therapeutic Uses of Lexotanil

What Lexotanil Treats: Main Uses and Benefits

Lexotanil is commonly used as an anxiolytic (anti-anxiety) medication, relevant in contexts where short-term symptomatic assistance is needed for manifestations of excessive anxiety and tension. Its primary therapeutic purpose is the relief of tension, anxiety, and agitation. The drug is generally applied in clinical settings that involve acute or unstable symptom patterns, especially when anxiety is so severe that it is disabling or subjecting the individual to extreme distress.

The medication is relevant for easing groups of symptoms that may appear suddenly or intensify, including psychological distress (like excessive worry and mental tension) and the physical manifestations of anxiety (such as muscular tension and restlessness).

The medication supports the patient during difficult episodes by easing distress and assists with maintaining functional stability.

This contributes to improved comfort during periods of heightened symptoms and helps maintain a sense of stability when symptoms are more noticeable, such as reducing apprehension before minor medical procedures.


Quick Fact: Relief for Psychological and Somatic Tension Lexotanil may assist with managing symptoms that create noticeable functional strain across both emotional and physical symptom axes.

Regulatory References

  1. AUSTRALIAN PRODUCT INFORMATION for Lexotanil

Eligibility and Restrictions for Use

Who can and cannot use Lexotanil?

Lexotanil (bromazepam) use is defined by strict regulatory criteria based on patient population, age, and existing health conditions, as documented in official government labeling. The medicine is generally indicated for adults for short-term symptomatic relief.

Contraindicated Populations Restricted/Conditional Use Populations
Severe Hepatic Impairment (Severe Liver Disease) Older Adults (Geriatric): Require lower initial doses.
Severe Respiratory Insufficiency Hepatic Impairment (Mild/Moderate): Requires special caution; lowest dose possible.
Myasthenia Gravis (Severe muscle weakness) Renal Impairment: Use with caution; dosage reduction may be advisable.
Sleep Apnoea Syndrome History of Alcohol or Drug Abuse: Use with extreme caution.

Lexotanil is contraindicated (must not be used) in all patients with these conditions. It is not recommended for children under 18 years of age, as safety and efficacy are not established in the pediatric population. Use is also not recommended during pregnancy or lactation, as the drug passes into the placenta and breast milk. Furthermore, the medicine is not recommended as a standalone treatment for depression or psychosis.

What should I know about interactions with other medicines?

Lexotanil Interactions with other medicines and products

Official regulatory information regarding Lexotanil (bromazepam) interactions identifies two primary domains: pharmacodynamic reinforcement and altered pharmacokinetics due to metabolic enzyme inhibition.

Interaction Scope

Interaction Domain Interacting Substances/Class Official Regulatory Statement
Pharmacodynamic Reinforcement Alcohol/Ethanol Concomitant use should be avoided due to the potential for severe sedation and clinically relevant respiratory depression [Source 1.2].
Opioids/CNS Depressants Use with other CNS depressants (including opioids) carries a risk of profound sedation, respiratory depression, coma, and death [Source 2.5].
Pharmacokinetic Modification Fluvoxamine Co-administration leads to a 2.4-fold increase in bromazepam exposure (AUC) and a prolonged elimination half-life due to CYP enzyme inhibition [Source 1.9].
Cimetidine Reduces bromazepam clearance by approximately 50%, thus prolonging the elimination half-life [Source 1.9].

Interaction-Related Restrictions and Cautions

Regulatory documents specify that co-administration with opioids should be reserved only for patients when alternative options are inadequate [Source 2.5].

Interaction notes also address specific populations. In the elderly, the co-administration of sedatives, including alcohol, increases the risk of falls and fractures [Source 1.7]. For patients with mild to moderate hepatic impairment, special caution is necessary, as reduced clearance may alter bromazepam exposure [Source 1.9].

No timing-based separation rules (e.g., “administer X hours apart”) are documented in the official regulatory information reviewed.

Mechanism of Action

Positive Allosteric Modulation of the GABA-A Receptor

Lexotanil (bromazepam) operates by engaging the GABA-A receptor complex, the main molecular target for inhibitory signaling in the brain. The drug functions as a positive allosteric modulator, binding to a specific site on the receptor to potentiate the action of the endogenous inhibitory neurotransmitter, GABA.


Cellular Mechanism: Neuronal Hyperpolarization

This molecular interaction initiates a rapid cellular cascade: the potentiated GABA action causes the receptor's internal chloride ion channel to open more frequently or for longer durations. The resulting influx of negative chloride ions drives the nerve cell membrane into a state of hyperpolarization, making the neuron electrically less excitable. This mechanism induces a state of cellular hyperpolarization, which dampens neural activity across the central nervous system.


Systemic Consequence: General CNS Dampening

The widespread suppression of neuronal excitability results in general CNS depression, which is the foundational physiological change produced by the drug. By inhibiting overactive neural circuits, the drug causes a sustained state of reduced neuronal excitability, ultimately leading to functional consequences like a suppression of hyperactive neural circuits and the inhibition of muscle tone via spinal reflexes.

Dosage and Administration Information

How to Use Lexotanil: Official Administration Guidelines

Lexotanil (bromazepam) is administered according to specific procedural guidelines outlined in prescribing information, which define its route, duration, and dosing patterns.

Administration Overview

Instruction Detail
Route of administration Oral (tablet form).
Dosing schedule (Adults) Treatment typically starts with the lowest effective dose, ranging from 1.5 mg to 3 mg daily. The usual range for outpatients is 3 mg to 6 mg per day, with doses for severe or hospitalized cases potentially reaching 6 mg to 12 mg per day.
Frequency pattern The total daily dose is typically taken in divided doses (e.g., two or three times daily) to maintain consistent levels.
Timing in relation to meals The tablets may be taken with or without food and should be swallowed whole with water.

Duration and Specific Procedural Rules

Lexotanil is strictly limited to short-term use; the total treatment duration, including the necessary dose reduction period, should generally not exceed 8 to 12 weeks. Treatment must always conclude with a gradual dose reduction (tapering) to ensure controlled cessation.

Population Adjustments

The official guidelines mandate dose modifications for specific patient groups:

  • Older Adults (Elderly): The initial starting dose must be reduced to half the usual adult dose (e.g., 1.5 mg daily) due to increased sensitivity.
  • Hepatic Impairment: Patients with liver issues require a dose reduction as specified in the product label.

Recent Clinical Evidence

Research evidence / Overview of studies for Lexotanil

Evidence for Acute Short-Term Anxiety and Tension

The core research base for Lexotanil (bromazepam) involves short-term randomized controlled trials (RCTs). These studies were used in research exploring how symptoms change over time, primarily focusing on adult patients who were experiencing excessive anxiety and tension considered severe or debilitating. Researchers often measured outcomes using standardized scales to track symptom intensity or variability, particularly focusing on both psychological tension and physical discomfort, such as muscular tension and restlessness.

Studies report how symptoms evolved in the observed populations. Research highlights changes measured during the study period when compared to an inactive treatment (placebo) or other similar medications. The reported outcomes were primarily focused on the immediate effects seen over observation periods that typically lasted only a few weeks. These studies contribute to understanding symptom patterns, but reflect responses under the specific conditions of the trials.

Evidence in Psychogenic Disorders with Somatic Symptoms

Bromazepam was studied for its application in conditions presenting with both psychological anxiety and noticeable physical manifestations, such as outcomes related to systemic or functional imbalance. Research has explored these contexts using a combination of older open-label trials and observational studies. Studies monitored outcomes related to physical discomfort and patient-reported outcomes describing perceived discomfort.

Studies report how symptoms evolved in the observed populations, and findings indicate patterns related to the reduction of both psychological tension and physical complaints during the study periods. The overall evidence quality varies across studies for this specific application, with many reports relying on designs that introduce a higher risk of bias.

What Remains Uncertain in the Research Landscape

While the research provides insight into short-term changes, several key limitations are recognized. The core research largely originates from older studies, and many reports involved modest sample sizes. The long-term effects are not fully established, as follow-up durations were limited. Furthermore, comparative evidence against newer treatment options is limited. The evidence is most established for short-term application, consistent with the conditions under which the drug was studied.

Frequently Asked Questions (FAQ)

Common questions about Lexotanil (FAQ)


Q: Does Lexotanil interact with alcohol consumption?

Official regulatory documents state that combining Lexotanil with alcohol is strongly advised against. The combination carries a significant risk of severe central nervous system depression, which can lead to profound sedation and clinically relevant respiratory difficulties.

Q: Can Lexotanil be taken with over-the-counter sleep aids?

Regulatory guidelines caution against combining Lexotanil with other central nervous system (CNS) depressants, a category that includes many common over-the-counter sleep aids. Regulatory documents indicate that combining these agents may increase the risk of excessive sedation and respiratory depression.

Q: Is Lexotanil appropriate for people who are elderly?

Official guidance mandates caution for older adults. This population is described as being more sensitive to the drug’s CNS effects, which increases the risk of sedation, confusion, and falls. Therefore, official guidelines state that a reduced initial dose is necessary for older patients.

Q: Are there withdrawal effects described for Lexotanil?

Yes, official safety information describes withdrawal phenomena that may occur upon cessation of treatment. These symptoms can include anxiety, confusion, irritability, headache, muscle pain, sleep disturbances, and shaking.

Q: Is it possible to become tolerant to the effects of Lexotanil?

Regulatory documents indicate that tolerance to the medicine's sedative effects can develop over time. This suggests that a reduced or lessened response to the drug may be experienced with continued use.

Q: What official information is there regarding Lexotanil and kidney function?

The official criteria for use state that patients with renal impairment (kidney issues) should use the drug with caution. In these cases, a dosage reduction may be advisable to account for the body’s ability to process the medicine.

Q: How quickly does Lexotanil start to work after taking it?

Pharmacokinetic data from regulatory information indicates that the concentration of the drug in the blood, which correlates with its peak effect, is typically reached between half an hour (0.5) and four hours (4) after the tablet is taken.

Q: How long does the effect of Lexotanil typically last?

The duration of the effect is related to its elimination half-life, which is described as being approximately 17 hours, with a typical range of 11 to 22 hours. This officially classifies Lexotanil as an intermediate-acting benzodiazepine.

Q: Are there any foods or drinks that should be avoided with Lexotanil?

Regulatory documents provide a strict warning to avoid consuming alcohol while using this medicine due to the risk of severe side effects. The tablets are generally described as being able to be taken with or without food.

Q: What happens if I miss a scheduled dose of Lexotanil?

Official patient instructions state that if a dose is missed, that dose should be skipped entirely. The next dose should then be taken when it is regularly scheduled, without attempting to take a double dose to compensate.

Q: Is Lexotanil used to treat all types of anxiety disorders?

The drug is officially indicated for the short-term symptomatic relief of severe anxiety and tension that is considered disabling. Official product information notes it is not recommended as a standalone treatment for underlying conditions like depression or psychosis.

Q: Is it known to cause changes in mood or behavior?

The official safety profile lists psychiatric disorders among adverse reactions. This can include feelings of confusion or nervousness, and in rare instances, paradoxical reactions like agitation, irritability, or heightened anxiety.

Q: Are there any studies comparing Lexotanil's effectiveness to a placebo?

The core research base for the drug involves short-term randomized controlled trials (RCTs). These studies were used to explore symptom changes when Lexotanil was compared to an inactive treatment (known as a placebo) or other similar medications.

Q: Is Lexotanil known by any other names in different countries?

Lexotanil is the brand name for the generic drug Bromazepam. Because of differing regulatory approvals, it is marketed under various trade names (such as Lexotan, Lexatin) depending on the country or region.

Q: Does Lexotanil affect sleep patterns or cause insomnia?

While the drug is known to cause sedation and drowsiness, official regulatory warnings state that withdrawal symptoms upon cessation can include sleep disturbances. This includes a temporary increase in insomnia or difficulty sleeping.

Q: What should be done if I experience an unexpected side effect?

Official patient guidance states that if a patient experiences side effects that are severe, bothersome, or unexpected, contact with a healthcare professional is necessary.

Q: Why might a doctor switch a patient from Lexotanil to a different drug?

Official guidelines limit the drug to short-term use, generally not exceeding 8 to 12 weeks, due to the recognized risk of dependence and withdrawal. This limitation is consistent with the need to consider alternative long-term treatments after the short-term course concludes.

Q: Is it true that Lexotanil is not approved in certain countries?

Regulatory information indicates that, while approved in many countries like Canada and those in Europe, the brand name Lexotanil and its generic form are not approved by the U.S. Food and Drug Administration (FDA).

Q: Can Lexotanil cause memory problems or confusion?

Official safety data confirms that memory loss (amnesia) may occur when the drug is used at therapeutic doses. Confusion is also listed among the officially categorized and observed adverse reactions.

Q: Are there documented long-term effects of using Lexotanil?

Regulatory documents note that the research base primarily consists of short-term studies. As a result, the long-term effects are not fully established, as follow-up durations in the key studies were limited.

Q: Does Lexotanil change how other medications are absorbed?

Official interaction documents describe that certain medications can alter the way Lexotanil is processed by the body (pharmacokinetics). Specifically, this means they may affect its clearance and prolong the time it takes for the body to eliminate the drug.

Q: Is Lexotanil a controlled substance, and what does that classification mean?

Yes, Bromazepam is listed as a Schedule IV controlled substance in jurisdictions such as the U.S. and Canada. This classification is used by regulatory bodies to reflect that the drug has an accepted medical use but also carries a recognized potential for abuse and dependence.

Q: Why do some people refer to Lexotanil as a 'minor tranquilizer'?

This term refers to an older, historical classification for this class of medicine. Officially, Lexotanil is now classified as a Benzodiazepine and an Anxiolytic medicine, reflecting its modern designation as a drug used to treat anxiety.

Q: Can caffeine intake change the effects of Lexotanil?

Official product information classifies Lexotanil as a CNS depressant. Studies have examined the principle that stimulants like caffeine could potentially counteract or antagonize the sedative and calming effects of the medicine.

Q: What research is available on Lexotanil's use in panic attacks?

Research has focused on the drug's short-term effectiveness for anxiety manifestations, which includes symptoms that are akin to panic. Clinical evaluations have supported its use for the short-term management of acute anxiety symptoms.

Q: Does Lexotanil cause rebound anxiety when stopped?

Yes, official documentation describes that upon stopping treatment, a temporary and heightened return of the original anxiety symptoms can occur. This specific effect is known as rebound anxiety.

How should Lexotanil be stored and disposed of?

Storage Requirements

Lexotanil (bromazepam) must be stored at room temperature, generally between 15 C and 30 C (59 F and 86 F), to maintain its product integrity. The tablets require protection from both moisture and excessive heat. For safety, the medicine must be stored in its original container and kept out of the sight and reach of children.

Disposal Instructions

Official regulatory guidance emphasizes using an authorized drug take-back program or a prepaid mail-back envelope as the preferred method for discarding unused or expired bromazepam. The medicine is not on the U.S. FDA's flush list and should not be washed down the drain. If a take-back program is unavailable, the drug should be removed from its container, mixed with an undesirable substance (such as used coffee grounds or dirt), sealed in a bag or container, and placed in the household trash. All personal information on the prescription label must be removed or obscured before disposal.

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

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