Noctamid

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Noctamid

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Medically reviewed

Rosario Oropesa

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 Noctamid

Noctamid is a prescription-only medicinal product containing the single active pharmaceutical ingredient Lormetazepam, which is chemically classified as a benzodiazepine derivative. This drug is primarily categorized as a sedative-hypnotic agent, designed for the short-term management of sleep disturbances.

Property Description
Active ingredient Lormetazepam
Form Film-coated tablet
Pharmacological class Sedative-Hypnotic
General purpose To induce rest and sleep
Origin Synthetic compound

What Type of Medicine is Noctamid (Lormetazepam)?

Lormetazepam is a synthetic compound that functions as a potent sedative-hypnotic agent within the central nervous system (CNS). Its mechanism involves action as a GABAA receptor positive allosteric modulator, which boosts the brain's natural inhibitory signals to reduce neuronal excitability. As an intermediate-acting agent among benzodiazepines, the profile of Lormetazepam is noted for its ability to balance rapid onset for sleep initiation with sufficient duration for sustained rest. This property indicates the medicine is intended to manage the difficulties associated with initiating and maintaining continuous sleep.


Composition and Physical Form of Noctamid

The medicine is manufactured as a single-ingredient product, relying exclusively on the Lormetazepam active substance for its therapeutic effect. In most authorized regions, Noctamid is prepared as an oral preparation, commonly formulated as a film-coated tablet intended for ingestion via the oral route of administration. This standardized pharmaceutical form ensures consistent and reliable systemic delivery of the compound, confirming its design for non-hospitalized patient use.


What is the General Purpose of This Hypnotic Agent?

The core purpose of this compound is to induce a state of rest and calm by systematically reducing overall neuronal activity in the brain. As a hypnotic and anxiolytic agent, it facilitates the body's process of transitioning into sleep and supports the maintenance of continuous sleep cycles. Consequently, the general function of Noctamid is confined to providing support in relieving the acute brain hyperactivity associated with difficulty falling asleep or maintaining sufficient sleep.

What side effects are possible with Noctamid?

Possible Side Effects and Safety Information

The safety profile of Noctamid (Lormetazepam) is documented in regulatory sources and is defined by effects consistent with its action as a sedative-hypnotic agent, primarily impacting the central nervous system (CNS) and psychiatric status.

Frequency-Classified Adverse Reactions

The most frequent adverse reactions listed in official documents are linked to CNS depression:

  • Very Common: Daytime drowsiness, sedation.
  • Common: Dizziness, ataxia (loss of coordination), and muscle weakness.
  • Rare or Very Rare effects span multiple system-organ classes, including nervous system disorders (e.g., transient anterograde amnesia, reduced alertness), psychiatric disturbances (e.g., confusion, unmasking of depression), and respiratory issues (e.g., apnoea, respiratory depression).

Serious Safety Constraints and Risks

The official labeling highlights several serious safety constraints and risks, independent of common side effects:

  • Dependence and Withdrawal: Continued use may lead to physical and psychological dependence. Abrupt cessation, especially after prolonged use, risks precipitating potentially life-threatening withdrawal reactions.
  • Respiratory Risk: The medication can cause or worsen respiratory depression, a risk elevated by concomitant use with opioids or other CNS depressants, a combination strictly restricted in regulatory guidance.
  • Paradoxical Reactions: Clinically opposite effects, such as restlessness, agitation, and aggressiveness, are documented and, when severe, may necessitate discontinuation.

Population-Specific Safety Information

Specific patient populations are noted as having heightened susceptibility:

  • Older Adults: Increased risk of sedation and ataxia is noted, which contributes to a documented increased risk of falling.
  • Hepatic Impairment: The use of benzodiazepines is generally constrained in patients with severe hepatic insufficiency due to the risk of hepatic encephalopathy.

Overdose and Emergency Response

Noctamid overdose presentation is characterized by a spectrum of Central Nervous System (CNS) Depression, ranging from common clinical signs such as somnolence, ataxia, and slurred speech to severe, life-threatening outcomes. Regulator-documented severe manifestations include profound sedation, coma, respiratory depression, apnea, and, in the most severe instances, cardiac arrest and death. This severity is notably increased when the product is co-ingested with other CNS depressants, such as alcohol or opioids.

The official guidance mandates that immediate medical attention or contact with emergency services must be initiated upon suspicion of overdose or if symptoms like trouble breathing occur. Management protocols focus on symptomatic and supportive treatment and require close medical observation, often involving hospital monitoring for persistent signs of intoxication. The benzodiazepine antagonist Flumazenil is available; however, its use is subject to regulatory caution due to the risk of precipitating adverse effects in specific scenarios. Regulatory documents also note that paradoxical reactions are more likely to occur in children and the elderly.

Therapeutic Uses of Noctamid

What Noctamid Treats: Main Uses and Benefits

Noctamid (Lormetazepam) is a hypnotic agent commonly used across conditions presenting with acute episodes of severe and moderately severe insomnia. The medication is applied in addressing symptom clusters that may become intense or disruptive, such as difficulty falling asleep (impaired sleep initiation) and frequent nocturnal wakefulness (disrupted rest). Its use is relevant in contexts involving heightened systemic burden.

This supportive use is applied in clinical settings that involve acute or unstable symptom patterns, consistent with its intended short-term application. The primary therapeutic benefit is to provide support that helps ease the overall symptom burden of sleeplessness. It may assist with sleep initiation and contributes to a more continuous sleep cycle, and is relevant for easing symptoms that interfere with daily comfort.

Key Therapeutic Indications

The main therapeutic indications for Noctamid are relevant in conditions characterized by episodic or fluctuating manifestations of severe and moderately severe insomnia, applied in addressing symptoms related to impaired sleep initiation and sleep maintenance.


Quick Fact: Supports patients during difficult episodes

Eligibility and Restrictions for Use

Noctamid (lormetazepam) is a hypnotic benzodiazepine primarily indicated for the short-term management of severe insomnia that is disabling or causes extreme distress. Treatment should be kept as brief as possible, typically not exceeding a few weeks, due to the risk of tolerance and dependence. The starting dose may be reduced for specific patient populations.

Who Can Use Noctamid?

  • Adults experiencing severe or distressing insomnia.
  • Elderly patients (who are generally prescribed a lower starting dose).
  • Patients with mild-to-moderate liver or respiratory impairment (dose reduction may be necessary).

Who Cannot Use Noctamid? (Contraindications)

Noctamid is contraindicated, meaning it should not be used, in individuals with:

  • Known hypersensitivity or allergy to benzodiazepines or any component of the medication.
  • Myasthenia gravis (a condition causing muscle weakness).
  • Severe respiratory insufficiency or chronic obstructive pulmonary disease (COPD).
  • Sleep apnea syndrome (pauses in breathing during sleep).
  • Severe liver impairment.
  • Acute narrow-angle glaucoma.
  • Children and adolescents under 18 years of age, unless a specialist's careful assessment deems it absolutely necessary.

Caution is also advised for patients with a history of alcohol or drug abuse, depression, or psychosis, as Noctamid may worsen these conditions or increase the risk of dependence.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents detail specific constraints regarding the concomitant use of Noctamid (lormetazepam) with other substances, primarily due to the potential for enhanced effects on the central nervous system (CNS).

Documented Interaction Categories

Interacting Product Category Resulting Constraint or Consequence
CNS Depressants (e.g., Antipsychotics, Sedatives, Antidepressants, Anaesthetics, Sedative Antihistamines, Anti-epileptics) May lead to an enhanced depressive effect on the CNS.
Alcohol Concomitant intake should be avoided due to a significant enhancement of the sedative effect.
Opioids (Narcotic Analgesics) Concomitant use increases the risk of serious adverse outcomes, including respiratory depression and coma. Use must be limited in dose and duration and only considered when alternatives are not feasible.
Methylxanthines (e.g., Theophylline) May reduce the sedative effect of Noctamid.
Cardiac Glycosides Concurrent use may increase plasma levels of cardiac glycosides.
Beta-blocking Agents Concurrent use may increase the clinical effects of lormetazepam.
Oestrogen-containing Products May decrease the plasma levels of benzodiazepines similarly metabolised to lormetazepam.

Interaction-Related Restrictions

Co-administration with narcotic analgesics carries an increased risk of psychological dependence due to enhanced euphoria. The use with alcohol is strictly advised against due to the risk of excessive sedation.

Mechanism of Action

Noctamid (lormetazepam) is a short-acting benzodiazepine that targets and modulates the GABA-A receptor complex in the central nervous system. This compound functions as a positive allosteric modulator by binding to specific benzodiazepine sites located at the interface of the alpha and gamma subunits on the GABA-A receptor.

Binding to this site alters the conformational state of the receptor, which consequently increases the affinity of the receptor for the inhibitory neurotransmitter, gamma-aminobutyric acid (GABA). This action enhances the inhibitory effects of GABA, thereby increasing the frequency of chloride ion channel opening within the neuronal membrane.

This resultant influx of negatively charged chloride ions induces hyperpolarization of the postsynaptic neuron. This state of increased membrane potential leads to a reduction of neuronal excitability, causing a generalized depressant effect on the central nervous system via specific structures, including the limbic system, thalamus, and hypothalamus.

Dosage and Administration Information

How to Use Noctamid: Official Administration Guidelines

Noctamid (Lormetazepam) is a sedative-hypnotic agent administered via the oral route only, as a tablet. Its usage is strictly limited to short-term intervention, typically ranging from a few days up to two weeks, and must not exceed four weeks in total duration. This short-course pattern is established to define the medicine's role in managing severe sleep disturbances.

The administration schedule is based on a single daily dose taken just before going to bed. This specific timing is critical, as guidelines specify that users ensure they can secure a period of 7 to 8 hours of uninterrupted rest following ingestion.

Official Dosing and Administration

Instruction Category Labeled Usage Principle
Standard Adult Dose Ranges from 0.5 mg to 1.5 mg per dose. A maximum of 2 mg may be prescribed for individual cases of severe insomnia.
Administration Context Tablet must be swallowed with liquid (e.g., water) and taken shortly before retiring.
Discontinuation Treatment must be concluded with a gradual dose reduction (taper) before stopping completely.

Population-Specific Adjustments

Specific adjustments are indicated for vulnerable groups. Older adults and debilitated patients must initiate treatment with a reduced dose, typically 0.5 mg or less. Dose reduction is also considered necessary for patients with certain degrees of hepatic or renal impairment. The medicine is not indicated for use in children or adolescents.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Noctamid (Lormetazepam)


Evidence for use in Acute and Short-Term Insomnia

The evidence base for Noctamid was studied for use in conditions associated with acute or disruptive episodes of sleeplessness. The foundational research involves short-term, randomized, double-blind, placebo-controlled trials (RCTs). These studies included adults experiencing sleep difficulties and were designed to evaluate the compound against an inactive placebo, with some research also examining it relative to other prescription compounds.

Research was studied for its impact in individuals presenting with fluctuating or unstable symptoms over defined, short time intervals, typically lasting up to two to three weeks. These studies monitored outcomes reflecting daily functioning or activity level, such as the time taken to fall asleep (sleep latency) and the duration of waking periods after initially falling asleep (nocturnal wakefulness).

Findings describe research patterns where Lormetazepam was studied for its impact on sleep latency and nocturnal wakefulness relative to a placebo. Research highlights changes measured during the study period, with studies reporting how symptoms evolved in the observed populations during short-term treatment.


Long-Term Research and Follow-up Duration

The available clinical trial data for Noctamid are largely based on short-term follow-up durations. The studies were generally relevant in trials assessing short-term or episodic symptom patterns.

Due to this focus, there is limited information for long-term outcomes. Research exploring short-term symptom changes contributes to the broader evidence landscape, but long-term effects are not fully established. There are few data available to provide insight into the potential durability of effectiveness, or how symptoms may evolve if the compound is used continuously for periods extending beyond the studied two-to-three-week intervals.


Research in Specific Patient Populations

Most of the core evidence for Noctamid was evaluated in the general adult outpatient population experiencing insomnia. This means that data for certain groups remain uncertain.

Specifically, evidence is limited for specific special populations, such as older adults, in specific age groups, or those with various concurrent medical conditions. Follow-up durations were limited for these groups. The research does not determine whether an individual in these groups will respond similarly to the patterns observed in the main studies.

Frequently Asked Questions (FAQ)

Common questions about Noctamid (FAQ)

Q: How quickly should I expect Noctamid to start working?

According to official regulatory documents, Noctamid is described as being rapidly absorbed after it is taken. Its concentration in the bloodstream is often noted to reach its peak within approximately one hour of ingestion. This rapid profile is consistent with its intended use for initiating rest.

Q: Can Noctamid cause next-day drowsiness or a 'hangover' feeling?

Official safety documents state that daytime drowsiness and sedation are listed as very common adverse effects. These residual effects can persist into the day after using the medicine, potentially causing a 'hangover' feeling. Regulatory instructions emphasize that the medicine should be taken only when the user can commit to a period of 7 to 8 hours of uninterrupted rest, which is intended to help reduce residual effects.

Q: Does Noctamid affect driving ability, according to safety warnings?

Yes, official warnings state that Noctamid has a major influence on the ability to drive and operate machinery. This is because effects such as sedation, dizziness, and impaired muscle function can negatively affect performance and reaction time. Official guidance warns that activities requiring full mental alertness, such as driving, should be avoided after taking the medicine.

Q: Do official studies address the long-term safety of Noctamid use?

The available clinical data for Noctamid are limited when examining long-term safety outcomes. Regulatory documents generally limit the recommended treatment duration to short-term use, typically not exceeding four weeks, primarily due to the established risks of developing tolerance and dependence.

Q: Is Noctamid known to interact with common pain relievers like ibuprofen?

Official documents for Noctamid do not specifically list non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen as an interacting agent. Regulatory warnings are instead focused on the risks associated with combinations involving other CNS depressants, alcohol, and opioids.

Q: Are there specific foods or drinks that should be avoided when taking Noctamid?

The primary and most critical restriction found in official guidance concerns alcohol. Regulatory documents state that alcohol should be avoided due to the significant risk of enhancing the sedative effect. Official product information does not list other specific food or drink restrictions.

Q: Is Noctamid safe for people who have kidney problems?

For patients with renal impairment, official guidelines advise that a reduced dose of the medicine may be necessary. Use is generally not contraindicated based on kidney issues alone. Official information indicates that the determination of appropriate use, including any necessary dose adjustments, is based on a healthcare professional's assessment of the individual's condition.

Q: Is it true that Noctamid can cause amnesia or memory issues?

Official regulatory documents note the possibility of transient anterograde amnesia as a rare adverse reaction. This describes a difficulty in remembering new events that occur after taking the medicine, and the risk increases with higher doses.

Q: Do studies show that Noctamid improves sleep quality or just duration?

Research evidence has focused on the compound’s effect on measurable components of sleep. These include shortening the time taken to fall asleep (sleep latency) and decreasing the duration of waking periods after initially falling asleep (nocturnal wakefulness) during short-term use.

Q: Are there warnings about changes in behavior while taking Noctamid?

Yes, official safety information includes warnings regarding paradoxical reactions. These are documented as behavioral changes, which can include restlessness, agitation, irritability, and aggressiveness. These effects are clinically opposite to the medicine’s intended sedative action.

Q: Why do official sources list 'paradoxical reactions' as a possible effect of Noctamid?

Paradoxical reactions are listed in official documents because they are documented and observed effects that occur in some patients taking this class of medicine. Their inclusion reflects that these rare, unexpected, and opposite behavioral changes are recognized and documented safety events.

Q: What are the research findings on using Noctamid for chronic insomnia?

The research evidence available for Noctamid is primarily based on short-term clinical trials studying acute or disruptive episodes of sleeplessness. Official regulatory sources state that established data for the long-term management of chronic insomnia are not provided in the current findings.

Q: Does the efficacy of Noctamid decrease over time?

Official documents state that some loss of effectiveness, which is known as tolerance, may develop after the medicine has been used repeatedly for a few weeks. This risk of diminishing efficacy is a key reason why the treatment is limited to a short-term duration.

Q: Can women who are pregnant or breastfeeding use Noctamid?

Official product information states that the use of Noctamid is not recommended during pregnancy or for women who are breastfeeding. This recommendation is due to the potential for the medicine to pass through the placenta and be excreted into breast milk.

Q: Is Noctamid available in different strengths or forms?

Noctamid is generally available as an oral film-coated tablet designed for ingestion. The prescribed doses, as detailed in official guidance, usually range between 0.5 mg and 1.5 mg, with a maximum of 2 mg cited for individual cases of severe insomnia.

Q: Can Noctamid be taken on an empty stomach?

Administration instructions state that the tablet should be swallowed with liquid just before going to bed. Official guidelines do not provide a specific restriction on taking the medicine relative to food consumption, focusing instead on the timing of the dose.

Q: Does Noctamid affect blood pressure or heart rate?

While the medicine's main effects target the central nervous system, adverse reaction reports in official documents have occasionally included cardiac effects. These rare reports have noted issues such as tachycardia (increased heart rate) and palpitations.

Q: Is Noctamid intended to treat chronic anxiety or is it only for sleep?

The official product label states that the medicine is primarily indicated for the short-term management of severe insomnia. Official therapeutic indications do not list the treatment of chronic anxiety as a core use for the drug.

Q: What is the official guidance on when to take Noctamid relative to bedtime?

Official administration instructions require the medicine to be taken as a single dose just before going to bed. This precise timing ensures the patient can secure the mandated 7 to 8 hours of uninterrupted rest immediately afterward.

Q: Are there known interactions between Noctamid and common allergy medications?

Official warnings caution against the concomitant use of specific over-the-counter and prescription drugs, including sedative antihistamines. This caution is necessary because this combination may lead to an enhanced depressive effect on the central nervous system.

How should Noctamid be stored and disposed of?

How to Store and Dispose of Noctamid (Lormetazepam)

Official regulatory information requires Noctamid tablets to be stored under specific conditions to maintain stability and ensure safety.

Required Storage and Safety

The medicine must not be stored above 25 C and should be kept in a cool dry place. A mandatory safety requirement is to keep the tablets out of the sight and reach of children.

Disposal and Expiry

Noctamid must not be used after the expiry date shown on the packaging, as stability is only guaranteed until that point. For disposal, any unused or expired medicine should be returned to the pharmacist. No special requirements are specified for the disposal of the waste medicinal product itself.

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

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