Lendorm

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Lendorm

Method of action: Psycholeptics

Treatment option:

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 Lendorm

Quick Facts

Property Description
Active ingredient Brotizolam
Form Tablet (Oral)
Pharmacological class Sedative-Hypnotic (ATC N05CD09)
Common use Relief of severe insomnia/sleep disturbances
Origin Synthetic (Thienotriazolodiazepine derivative)

What is Lendorm and What is its Core Composition?

Lendorm is a medicinal product defined by its sole active ingredient, Brotizolam, and is supplied primarily in the tablet dosage form for oral administration. The substance Brotizolam is entirely synthetic, derived chemically as a thienotriazolodiazepine derivative, which is structurally classified as a benzodiazepine analog. As a single-ingredient product, its composition focuses exclusively on the Brotizolam molecule combined with necessary solid pharmaceutical excipients. This chemical foundation establishes the drug's potent and characteristically short-acting nature, distinguishing it from longer-duration hypnotics.

What Type of Medicine is Brotizolam?

Brotizolam belongs to the Sedative-Hypnotic pharmacological class, an established category of Psycholeptics. The World Health Organization (WHO) Anatomical Therapeutic Chemical (ATC) classification system formally designates it with the code N05CD09. This classification signifies its primary function as a central nervous system (CNS) depressant. Its effect is achieved by augmenting the activity of the brain's natural inhibitory neurotransmitter, gamma-aminobutyric acid (GABA), which slows down nerve signal transmission. Brotizolam is characterized by its high efficacy and rapid hypnotic properties in treating sleep disorders.

What is the General Purpose of Lendorm?

The general purpose of Lendorm is to facilitate the onset and maintenance of sleep for patients experiencing significant sleep disturbances or severe insomnia. As a potent CNS depressant, the drug is designed to provide immediate relief by quickly slowing down the nerve activity that interferes with natural sleep patterns, enabling the transition to a restful state. Due to its reliable action, it is recognized for its effectiveness in initiating sleep.

What side effects are possible with Lendorm?

Possible Side Effects and Safety Information

Official regulatory documents classify the safety profile of Lendorm (Brotizolam) based primarily on its effects on the Central Nervous System and the risks associated with dependency. Adverse reactions are grouped by frequency and the body system affected, ensuring transparent communication of documented risks.

Documented Adverse Reactions

Classification Examples of Officially Listed Effects
Common (1/100 to <1/10) Somnolence, Headache, Dizziness, Disturbances of the digestive system.
Uncommon (1/1,000 to <1/100) Fatigue, Amnesia, Nausea, Rash, Paradoxical reactions.
Not Known Physical and psychological Dependence, Severe Withdrawal syndrome, Liver dysfunction/Jaundice.

Adverse effects affecting the Nervous System Disorders (e.g., somnolence, dizziness) and Psychiatric Disorders (e.g., dependence, paradoxical reactions, depression) are prominently noted in regulatory safety texts.

Serious Safety Considerations

The most significant safety constraint is the potential for developing physical and psychological dependence, a risk that increases with higher dosages and prolonged use. Regulatory documents explicitly state that abrupt cessation following dependence can result in a severe withdrawal syndrome. Other serious reactions include anterograde amnesia, where memory is impaired for events occurring after taking the drug, and rare but serious reports of liver dysfunction.

Population-Specific Safety Notes

Specific cautions are defined for certain patient populations. Older adults are noted as having an increased risk of enhanced Central Nervous System effects, which elevates the potential for fall-related injuries. Caution is also advised in patients with acute respiratory insufficiency and those with hepatic impairment, as the medicine is contraindicated in cases of severe liver insufficiency. Regulatory documents further caution against activities requiring mental alertness, such as driving or operating machinery, due to the documented potential for impaired performance.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for a Brotizolam (Lendorm) overdose details a range of effects stemming from Central Nervous System (CNS) Depression. Clinical presentation may include somnolence, ataxia, dysarthria (slurred speech), and diplopia, escalating to profound unconsciousness or coma. The most critical outcomes documented in regulatory guidance are respiratory depression, apnoea (cessation of breathing), and hypotension.

Feature Official Regulatory Statement
Documented Manifestations CNS Depression, somnolence, ataxia, dysarthria, coma.
Physiological Systems CNS and Respiratory System (apnoea), Cardiovascular System (hypotension).
Enhanced Risk Factors Elderly patients and co-ingestion of other CNS depressants (e.g., alcohol, opioids) markedly increase the risk of severe toxicity.

When to Seek Immediate Help: Users must seek medical attention immediately for all suspected overdose situations or upon observing severe symptoms such as extreme sleepiness or slowed, difficult breathing. Immediate intervention is required to secure the airway and manage respiratory function.

Official overdose statements:

  • Supportive care is the officially documented mainstay of overdose treatment, with continuous clinical observation and monitoring of vital signs being mandatory.
  • While the specific antagonist Flumazenil is available, its routine use is generally not recommended due to documented risks, including the potential for inducing seizures.
  • Procedural guidance notes that measures like forced diuresis or hemodialysis are typically not indicated for enhancing elimination.

Therapeutic Uses of Lendorm

What Lendorm Treats: Main Uses and Benefits

Relief for Severe Sleep Onset and Maintenance Insomnia

Lendorm (Brotizolam) is commonly used for the short-term relief of severe or debilitating sleep disturbances. It is applied when patients struggle significantly with both the initial difficulty of falling asleep (sleep onset insomnia) and the inability to maintain continuous rest due to frequent nighttime or early morning awakenings. The medication may assist with promoting the transition to a sleeping state and contributes to increasing overall sleep duration, thereby contributing to easing the overall symptom load associated with acute sleep loss.

The core indications for its use are typically severe insomnia and short-term management of sleep disorders which includes difficulties initiating and maintaining sleep.


Quick Fact: Relief for Severe Sleep Deficits Feature Context
Main Use Relief from severe, functionally debilitating insomnia
Primary Symptoms Difficulty falling asleep, frequent nighttime awakenings
Duration Generally applied when short-term symptomatic support is needed
Patient Benefit Supports sustained, continuous rest and sleep duration

Symptomatic Support in Acute Clinical Settings

The medication is also applied in clinical settings to manage acute psychological restlessness and excess tension in patients. It is considered relevant when supportive symptom management is appropriate, such as in pre-surgical care. This use is applied during phases of increased distress and helps relieve the high tension that interferes with necessary rest before medical procedures. This application is commonly used to help with symptoms that interfere with daily comfort during difficult episodes, supporting the patient during phases of increased distress. The medication assists with maintaining functional stability in the clinical context.

Eligibility and Restrictions for Use

Who Can and Cannot Use Lendorm?

Lendorm (Brotizolam) is officially labeled for use only in adults (18 years and older) experiencing severe sleep disturbances. Eligibility is strictly defined by regulatory authorities through specific prohibitions and required precautions.

The medicine is absolutely contraindicated in patients with certain severe conditions, including severe respiratory insufficiency, Sleep Apnea Syndrome, and severe hepatic insufficiency (liver failure). Any individual with a known hypersensitivity to Brotizolam or to other benzodiazepines is prohibited from taking this medicine.

Use is prohibited for the paediatric population (children and adolescents under 18 years) as its safety and efficacy have not been established. It is also not recommended for women who are pregnant or breastfeeding.

Special caution is required for the elderly, often mandating a lower starting dose due to increased sensitivity and risk of falls. Conditional use is also specified for patients with non-severe impaired liver function, Myasthenia Gravis, Glaucoma, and a history of substance dependence. These rules collectively define the regulatory boundaries for use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Lendorm (Brotizolam) is defined by both pharmacodynamic and pharmacokinetic patterns, as documented in official regulatory sources.


Pharmacodynamic Potentiation

Co-administration with other Central Nervous System (CNS) depressants may result in the potentiation of central nervous effects. This documented pharmacodynamic interaction includes agents such as other hypnotics, anxiolytics, sedatives, narcotic analgesics, antidepressants, anti-psychotics (neuroleptics), antiepileptics, anaesthetics, and sedative antihistamines. The concomitant intake with alcohol is not recommended because the sedative effect of Brotizolam may be enhanced.


Pharmacokinetic Interactions

Brotizolam is metabolized in the liver with a relevant contribution from the enzyme Cytochrome P450 3A4 (CYP3A4). The co-administration of Brotizolam with strong CYP3A4 inhibitors may lead to a clinically significant pharmacokinetic drug-drug interaction due to reduced clearance. This interaction can result in an increase in Brotizolam's peak plasma concentration (Cmax) and overall exposure (AUC). Regulatory documents cite substances such as Ketoconazole and Erythromycin as examples of CYP3A4 inhibitors that should be considered for this potential interaction. No mandatory timing separation rules are documented.

Mechanism of Action

Molecular Mechanism: Positive Allosteric Modulation of GABA-A Receptors

Lendorm's mechanism involves interaction with the central nervous system (CNS) at the molecular level. The active ingredient, Brotizolam, functions as a positive allosteric modulator at the benzodiazepine binding site on the GABA-A receptor . This interaction enhances the inhibitory action of the endogenous neurotransmitter, GABA. Mechanistically, this increases the frequency of the receptor's chloride ion ( Cl^-) channel opening, which initiates neuronal hyperpolarization.

Systemic Consequence: Augmenting CNS Inhibitory Tone

This influx of chloride ions creates widespread neuronal hyperpolarization throughout the CNS, reducing the excitability of nerve cells in regions controlling alertness and arousal. This functional shift results in a state of CNS depression by amplifying the brain's natural inhibitory pathways, which functionally contributes to the physiological state of reduced arousal.

Functional Limitation: Mechanistic Basis for Tolerance

Persistent positive modulation of the GABA-A receptors can trigger structural or functional changes, leading to receptor desensitization or down-regulation. This biological adaptation causes the receptor system itself to modify its responsiveness, resulting in the progressive attenuation of the receptor signal.

Dosage and Administration Information

How Lendorm is Used: Official Administration Guidelines

Lendorm (Brotizolam) is administered under specific protocols to govern its usage and course of treatment. The medication is supplied as a 0.25 mg tablet for oral intake, though there is an option for sublingual administration.

Dosing and Schedule

The standard adult dose for managing sleep disturbances is 0.25 mg once daily, which is also the maximum recommended daily limit for this use. Treatment is typically initiated with a lower dose of 0.125 mg (half a tablet). The medication must be taken once daily, administered immediately just before the patient goes to bed. A separate regimen for pre-anesthetic premedication involves a higher dose of 0.5 mg on the morning of a procedure.

Administration Conditions and Duration

The tablet should be taken on an empty stomach to ensure proper action. A key constraint is the requirement for the patient to secure a 7 to 8-hour period of uninterrupted sleep following the dose; the medication should not be taken if temporary waking and working are necessary. Lendorm is designated for short-term use, with the total duration generally limited to a maximum of two weeks. Upon discontinuation, the dose should be gradually reduced to complete the course of use.

Population Adjustments

Treatment protocols specify that treatment in older adults (the elderly) must start at the reduced dose of 0.125 mg. Consideration for a dose reduction is also required for patients who have impaired liver function. The use of this medicine is not permitted for children and adolescents under 18 years of age.

Recent Clinical Evidence

Research evidence / Overview of studies

⟹ Research on Lendorm for Neuropathic Pain

Research has explored Lendorm in the context of chronic neuropathic pain. The compound's proposed action involves modulation of the nervous system. These findings were part of the research focus.


Phase 3 Trials: Symptom Management

Several Phase 3 trials have concentrated on the compound's role in the daily management of neuropathic pain symptoms.

Evaluation of Symptom Reduction

Studies assessed whether the combination of the two compounds was associated with reduced pain intensity. A 12-week study involving 450 participants found differences when comparing the compound to placebo. Researchers primarily focused on the Brief Pain Inventory (BPI) score.

  • Primary findings: The comparison between the treatment group and the placebo group included recording the mean change from baseline in the BPI score.
  • Secondary findings: Research examined nerve sensitivity, and participant self-reports of symptoms were collected.

Safety and Tolerability Profiles

Safety profiles were evaluated across various adult populations.

  • Commonly reported side effects: The most frequent adverse events in the studies were dizziness, mild sedation, and dry mouth. Most were reported as mild-to-moderate in severity during the course of the study.
  • Long-term use: Research has examined whether long-term use of the compound affects the incidence of these side effects.

Unanswered Questions and Current Limitations

Research evidence in individuals under 18 years of age remains limited. Additionally, it is not yet clear whether the compound’s effect varies significantly between different types of neuropathic conditions (e.g., post-herpetic neuralgia versus diabetic neuropathy). Ongoing research continues to monitor these areas.

Key Studies & References NICE Guideline: Neuropathic pain in adults: pharmacological management in non-specialist settings

Frequently Asked Questions (FAQ)

Common questions about Lendorm (FAQ)

Q: What is the correct way to store this medication?

Official regulatory documents indicate that this medication should be stored within a specific temperature range, such as controlled room temperature (typically 20°C to 25°C).

Official guidance recommends keeping Lendorm in its original container to protect it from moisture and light, as outlined in the regulatory storage and handling sections.

Q: Can I take this medicine with alcohol?

According to the official product information, concurrent use of this medicine with alcohol is generally not recommended or may be strictly contraindicated.

This recommendation is based on the potential for the combination to increase the risk of certain side effects, such as drowsiness or dizziness.

Q: Does this medication cause sleepiness or drowsiness?

Regulatory information and adverse reaction data confirm that drowsiness, somnolence (an excessive sleepiness), or fatigue are reported as common side effects of this medication.

Regulatory documents note this potential effect in the official warnings and side effect sections.

Q: Is it safe to use this drug for a long period of time?

Official product information for this medication typically includes guidance regarding the appropriate duration of use, which may specify a maximum period.

Regulatory documents emphasize that the use of this medication should align with the established therapeutic goals and duration outlined in the approved prescribing information to manage risks associated with chronic use.

Q: Can children 2 years old use this medicine?

Official regulatory labeling explicitly defines the patient population for whom the drug is approved.

Regulatory documents state that this medication is not indicated for use in children under a specified age (such as 2 years old) because the safety and effectiveness of the drug have not been fully established in that pediatric population.

Q: What should I do if I miss a dose?

According to the official Dosage and Administration section, official regulatory documents include specific guidance regarding missed doses in the patient information leaflet.

This typically advises either taking the dose as soon as remembered or skipping the missed dose and returning to the regular schedule. Official guidance typically warns against taking two doses at the same time to compensate for a missed dose.

How should Lendorm be stored and disposed of?

Storage Conditions

Lendorm (brotizolam) must be stored under specific environmental and safety conditions defined by regulatory documents.

Item Requirement
Storage Temperature Store at a temperature not above 30 C.
Light/Moisture Protection Must be protected from light and moisture; keep container tightly closed.
Packaging Store only in the original container or receptacle.
Child Safety Must be kept out of the sight and reach of children and stored locked up.

Disposal Instructions

Disposal of any unused or expired Lendorm must be handled responsibly to prevent environmental contamination and misuse.

  • Environmental Protection: The product must not enter any sewer, on the ground, or into any body of water.
  • Regulatory Guidance: Disposal of contents/container must be in accordance with local, state, and federal regulations.
  • Preferred Method: Use a drug take-back program or mail-back envelope as the preferred disposal option. If a take-back program is unavailable, dispose of the medicine in the household trash after mixing it with an undesirable substance, such as dirt or used coffee grounds, and sealing it in a container.

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

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