Reladorm

Quick links to important sections

Reladorm

Selected form

Method of action: Anxiolytic, Hypnotic, Sedative

Treatment option:

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 Reladorm

Quick Facts Overview

Property Description
Active ingredient Cyclobarbital & Diazepam
Form Oral tablet
Pharmacological class Psycholeptic / CNS Depressant
Common use Hypnotic and Sedative
Origin Synthetic substances

What is Reladorm and How is it Classified?

Reladorm is a fixed-dose combination product classified within the Psycholeptic and Central Nervous System (CNS) depressant therapeutic groups. It is a completely synthetic pharmaceutical preparation administered orally in the form of a tablet.

The drug is categorized by the World Health Organization (WHO) Anatomical Therapeutic Chemical (ATC) Classification System under the high-level group of Nervous System agents, specifically under Hypnotics and sedatives. This classification defines its general application as a product intended to induce sleep and promote deep relaxation. Reladorm is primarily differentiated from single-entity drugs by its structural combination, which is clinically recognized for addressing severe sleep disturbances requiring a dual mechanism of action.

Composition: Why Does Reladorm Combine Cyclobarbital and Diazepam?

Reladorm’s foundation relies on the complementary action of its two active ingredients: Cyclobarbital and Diazepam, pairing a barbiturate derivative with a benzodiazepine. Both of these substances are recognized for their ability to depress the central nervous system (CNS) by modulating the activity of the inhibitory neurotransmitter, gamma-aminobutyric acid (GABA). This dual composition aims for a comprehensive effect.

Cyclobarbital is historically known for contributing a rapid onset of hypnotic action, while Diazepam provides more sustained effects, including pronounced anxiolytic and muscle relaxant properties. Pharmacological studies confirm that this specific combination strategy is utilized in cases of severe persistent insomnia where achieving both quick sleep onset and sustained nighttime sedation is critical. This synergistic approach is employed to manage severe sleep disturbances by promoting both the rapid induction of sleep and a sustained, relaxed state.

What side effects are possible with Reladorm?

Possible Side Effects and Safety Information

This section describes the officially documented adverse reactions and safety characteristics of this fixed-dose combination, based on government regulatory labeling. The side effects primarily stem from its activity as a central nervous system (CNS) depressant.

Common Adverse Reactions and Systemic Effects

The most frequently observed adverse reactions are directly related to the CNS depressant effect and are classified as common in official documents. These include drowsiness, sedation, ataxia (impaired coordination), and fatigue. These effects are categorized under Nervous System Disorders and may also involve muscle weakness (Musculoskeletal Disorders).

Other adverse effects documented in regulatory sources include confusion, dizziness, headache, slurred speech, and anterograde amnesia, which most often occurs several hours after administration.

Serious Adverse Reactions and Duration Risks

Several serious adverse reactions are documented for this drug class. These include respiratory depression and the potential for severe withdrawal syndromes, such as delirium or seizures, if treatment is abruptly discontinued after physical dependence has developed. The risk of both physical and psychological dependence and the development of tolerance (loss of hypnotic effect) is noted to increase with both the dose and the duration of treatment.

Population-Specific Constraints

Safety constraints are explicitly documented for certain patient groups. Older adults require reduced dosing due to an increased risk of falls, confusion, and ataxia. The medicine is formally contraindicated in conditions such as severe hepatic insufficiency (due to the risk of hepatic encephalopathy), severe respiratory insufficiency, Myasthenia gravis, and sleep apnoea syndrome.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents define the overdose profile of Reladorm (Cyclobarbital and Diazepam) by its potential for severe, combined Central Nervous System (CNS) depression.

Documented Manifestations and Risks
Signs of Overdose Overdose may present with CNS depression ranging from pronounced drowsiness and somnolence to a deep coma. Physical signs include ataxia (uncoordinated movement), slurred speech, diminished reflexes, hypotension, and hypothermia.
Life-Threatening Outcomes The most critical risk is Respiratory Depression, which can rapidly progress to apnea (cessation of breathing) and respiratory arrest. Severe cases also carry the risk of cardiovascular collapse and secondary complications like Aspiration Pneumonia.
Enhanced Toxicity The regulatory profile notes a significantly increased risk of severe toxicity, coma, and death when Reladorm is co-ingested with other CNS depressants, notably alcohol and opioids.
Vulnerable Populations Elderly patients and individuals with pre-existing hepatic impairment are identified as having increased sensitivity and risk for severe overdose outcomes.

Mandatory Emergency Action:

Official guidance states that immediate medical attention must be sought if overdose is suspected or if symptoms of CNS or respiratory compromise appear. This includes immediately contacting emergency services for symptoms such as slowed or difficult breathing, extreme confusion, or an inability to be roused from sleep. Management protocols documented in regulatory sources mandate supportive and symptomatic care as the primary treatment, including necessary airway management and continuous hospital monitoring of vital signs.

Therapeutic Uses of Reladorm

What Reladorm Treats: Main Uses and Benefits

This medication is used for symptomatic relief across specific clinical domains, providing comprehensive support where multiple symptoms converge to cause severe distress and functional strain. Diazepam, a primary component, is relevant for managing anxiety, muscle spasm, and convulsive disorders. It is generally applied in addressing complex conditions that require additional symptomatic assistance.


The therapeutic domains where it may be relevant include supporting management of severe, compound sleep failure, easing profound psychological tension and agitation, and addressing central nervous system-driven somatic distress. It is relevant in clinical settings where supportive management of debilitating psychological distress is required. The combination may be used when symptoms of severe persistent insomnia are complicated by underlying agitation, or in scenarios requiring short-term symptomatic support, such as pre-procedure sedation.

“This application may offer the benefit of calming support, which assists patients in coping more steadily with difficult, acute episodes.”

The primary benefit is that it helps support continuous, sustained sleep, which contributes to easing the fatigue and irritability associated with prolonged sleeplessness. It also supports skeletal muscle relaxation, which contributes to improved physical comfort and general well-being during rest.

Quick Fact: Relevant for Compound Symptom Management
Primary Focus Conditions involving heightened symptoms of anxiety, muscle spasm, and severe sleep loss.
Common Scenario Use is applicable in situations where heightened symptoms of agitation and tension interfere with both sleep onset and sustained rest.

Eligibility and Restrictions for Use

Reladorm is generally intended for use in the adult population for short-term symptomatic support, according to regulatory guidelines. Eligibility is strictly defined by official labeling, which establishes populations that are prohibited from use (absolute contraindications) and groups requiring special caution.

The medicine is contraindicated for patients with severe respiratory insufficiency, severe hepatic insufficiency, Myasthenia Gravis, and sleep apnoea syndrome. Individuals with a history of drug or alcohol dependence, as well as those with acute narrow-angle glaucoma, must not use this medicine.

Age-related rules strictly prohibit use in infants under six months of age, and safety and effectiveness are not established for children and adolescents. Older adults (geriatric patients) are officially designated as a population for whom use requires caution.

Regarding reproductive status, the medicine is formally contraindicated during pregnancy and is not recommended while breastfeeding. Caution is also advised for patients with pre-existing mild-to-moderate renal impairment or chronic pulmonary insufficiency, as officially documented.

What should I know about interactions with other medicines?

The official regulatory interaction profile for Reladorm is defined by a significant risk of additive effects and pharmacokinetic alterations, based on governmental documentation for its active components.

Documented Interaction Domains

Interaction Type Interacting Agents / Classes Official Regulatory Statement
Pharmacodynamic Risk Opioid Analgesics, Alcohol, Other CNS Depressants Co-administration is associated with regulatory warnings for profound sedation, respiratory depression, coma, and death due to additive CNS depression.
Metabolic Clearance CYP2C19 and CYP3A4 Inhibitors Documented to decrease the rate of elimination of the Diazepam component, resulting in increased plasma exposure.
Metabolic Clearance CYP2C19 and CYP3A4 Inducers Documented to increase the rate of elimination of the Diazepam component, which may reduce its concentration. The Cyclobarbital component acts as an enzyme inducer.
Non-Medicinal Constraint Alcohol, Food Alcohol use is advised against due to enhanced sedative effects. Food intake may officially delay and decrease the absorption of the Diazepam component.
Population Notes Elderly, Limited Pulmonary Reserve Co-administration with CNS depressants requires caution due to officially noted increased risk of severe outcomes, including apnea.

This structure highlights the susceptibility to metabolic interference by common inhibitors and the high-risk combination of Opioids and other CNS-depressing agents.

Mechanism of Action

Enhancing Central Inhibitory Signaling

This drug combination exerts its primary action by positively modulating the Gamma-aminobutyric acid type A (GABAA) receptor complex—the main inhibitory target in the central nervous system. The two active ingredients, a barbiturate (cyclobarbital) and a benzodiazepine (diazepam), bind to distinct allosteric sites on this complex. This dual binding enhances the effect of the inhibitory neurotransmitter, GABA, resulting in an enhanced inhibitory signal across the brain and spinal cord.

Mechanism of Compound CNS Depression

The combined action on the GABAA receptor complex is synergistic. The benzodiazepine component increases the frequency of the chloride ion channel opening, while the barbiturate component increases the duration of the channel opening. This dual-component mechanism leads to a greater influx of chloride ions, causing hyperpolarization of the neuronal membrane and effectively reducing the cell's excitability and transmission speed. This physiological dampening of the central nervous system activity contributes to reduced basal CNS activity and decreased motor nerve signaling.

Dosage and Administration Information

How to Use Reladorm — Official Administration Guidelines

Reladorm, as a fixed-dose combination, follows strict usage patterns established for its highly controlled components. All administration is by the oral route, typically taken as a tablet.

Administration Scope

Category Official Administration Instruction
Dosing Schedule The standard adult hypnotic dose is set within the mathbf5 mg to mathbf15 mg range of the Diazepam component. The treatment must be maintained at the lowest dose that provides relief.
Frequency and Timing Administration is strictly once daily, taken immediately at bedtime. This timing is required to ensure the full sedative effect coincides with the sleep period.
Contextual Rules The tablet may be swallowed with a drink of water, with or without food. Patients must be able to guarantee mathbf7 to 8 hours of uninterrupted sleep following the dose.
Age-Group Rules Older Adults/Debilitated Patients: Requires a mandatory dose reduction. The initial dose is typically reduced to mathbf50% of the normal adult dose (e.g., mathbf2 mg to mathbf2.5 mg initial dose).
Missed Dose Rule If a dose is forgotten and the patient has already gone to sleep, the dose should be skipped to prevent over-sedation. The patient should resume the next scheduled dose at the usual time.

Course Duration and Discontinuation

The duration of use is explicitly limited to short-term relief only. Treatment must not extend beyond mathbf4 weeks in total, which includes the necessary dose-reduction period. Discontinuing the medicine requires a gradual dose reduction (tapering) process, as mandated by established protocols to prevent rebound effects.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Reladorm

Evidence for Use in Severe Persistent Insomnia and Sleep Disorders

This section will summarize the structure of the clinical evaluation for the medicine's use as a hypnotic, detailing the types of randomized and comparative trials that examined outcomes such as sleep latency and total sleep duration.

Research into the component drug classes, and some older clinical trials and reports for the combination, was studied for conditions characterized by fluctuating or episodic manifestations of sleep loss. Studies monitored patient-reported outcomes describing perceived discomfort related to difficulties falling asleep or remaining asleep. The evidence base includes systematic reviews of multiple randomized trials focusing on the benzodiazepine component, as well as older clinical trials and reports specifically for the fixed combination product.

Studies monitored how the component drug class, when compared to an inactive substance, performed on outcomes related to total sleep duration. Findings describe patterns observed in the studies where patient-reported outcome measures of sleep latency described a greater change in the time to sleep onset than objective measurements documented.

However, the evidence is limited regarding the long-term patterns of use. The clinical follow-up durations were limited, typically lasting only a few weeks. The research describes short-term changes but does not offer comprehensive data on the consistency of findings or the durability of the patterns observed over prolonged treatment periods.


Evidence for Supportive Management of Agitation and CNS-Driven Tension

This area will detail the evidence base, including retrospective and comparative studies of dual-class regimens, which have explored the product's role in addressing acute agitation and CNS-driven somatic distress.

The combination was evaluated in research exploring short-term symptom changes in conditions involving periods of heightened symptoms and related systemic or functional imbalance. Studies explored the use of similar dual-class regimens in acute settings. The research examined outcomes related to systemic or functional imbalance and outcomes describing episodic or acute changes, which were measured using standardized severity scales.

Studies monitored how the co-administration of the two different drug classes was observed in some studies to be associated with data show patterns related to the management of acute symptoms, such as the total requirement for medication and outcomes linked to supportive care. Studies report how symptoms evolved in the observed populations, with some research describing patterns related to resolution of acute measures when compared to a single-class approach.


Long-Term Studies and Follow-Up Data

This section will describe the typical duration of the clinical trials used for evaluation and will outline what is currently characterized regarding the consistency of reported findings and durability of effect beyond short-term treatment.

Most of the foundational clinical trials for sedative-hypnotic agents, including the components of Reladorm, research examined short-term symptom patterns over defined time intervals that rarely extended beyond one or two months. This means the follow-up durations were limited.


Research Evidence in Special Populations

This part will identify the populations where studies have provided evidence, such as adults and older adults, and will clarify which specific age groups or patient groups are not well represented in the available clinical data.

Studies monitored outcomes related to systemic or functional imbalance across a wide spectrum of the adult population. Certain systematic reviews, focused on the benzodiazepine component, included cohorts of older adults to examine reported patterns within that age group.


What is Still Uncertain About the Research for Reladorm

This final summary will synthesize the main evidence gaps noted by researchers and regulators, including areas where the available data is limited, where greater study heterogeneity exists, or where future research is needed.

A primary limitation is that comparative evidence is lacking for the specific fixed-dose combination in contemporary trials, leading to a reliance on evidence from similar component-class regimens. The evidence quality varies across studies, with many trials having sample sizes were modest or short observation periods.

Overall, evidence is limited regarding outcomes reflecting daily functioning or activity level and patient-reported outcomes describing perceived discomfort. Research is ongoing across the therapeutic area, but the existing data show patterns related to outcomes only under the specific, defined conditions of the short-term studies under which they were conducted.

Key Studies & References WHO ATC Classification System: Diazepam and related Hypnotics and Sedatives (N05B)

Frequently Asked Questions (FAQ)

Common questions about Reladorm (FAQ)

Q: Is Reladorm considered a narcotic or controlled substance?

A: Official regulatory bodies classify this medicine as a controlled substance. This classification signifies its potential for dependence and requires legal controls on its handling and storage.

Q: What foods or drinks should be avoided when taking Reladorm?

A: Alcohol use is advised against, as co-administration may lead to increased sedative effects that pose a risk of harm. Official product information also notes that taking the medicine with food may delay and decrease the absorption of the component drugs.

Q: Can Reladorm be used by people with kidney problems?

A: Caution is advised for patients with mild to moderate kidney impairment, according to official guidelines. Furthermore, the medicine may be formally contraindicated for individuals who have severe renal disease.

Q: What happens when a person stops taking Reladorm?

A: Regulatory documents note that abrupt discontinuation may lead to severe withdrawal syndromes. Treatment requires a gradual dose reduction (tapering) to prevent the return of symptoms with increased intensity, known as the rebound effect.

Q: Why do official documents mention not operating heavy machinery while using Reladorm?

A: Official cautions are issued because the medicine commonly causes central nervous system (CNS) depressant effects, such as drowsiness, sedation, and impaired coordination (ataxia). These effects may impair a person’s ability to perform complex or hazardous tasks, such as driving or operating machinery.

Q: Does Reladorm affect alertness or driving ability the next morning?

A: Due to the components having prolonged elimination half-lives, it is possible for some residual effects to persist the next morning. Official warnings indicate that reduced alertness and drowsiness are recognized possibilities after taking the medicine.

Q: Does the efficacy of Reladorm change based on age?

A: The dosage is typically reduced for older adults because of their slower metabolism, which can lead to increased sensitivity to the medicine's effects. While this adjustment is primarily for safety, official documents do not specify a primary change in clinical efficacy based on age alone.

Q: How long does it typically take for the effects of Reladorm to begin?

A: The onset of action is generally rapid. The official clinical pharmacology section describes the components entering their initial distribution phase within approximately one hour after administration.

Q: How long do the effects of Reladorm last in the body?

A: Due to the long elimination half-life of the active components and their metabolites, the effects of the medicine can persist in the body for an extended period. This means components may be detectable for several days after the last dose.

Q: Can Reladorm cause weight gain or weight loss?

A: While the official labeling for the combination product does not explicitly list weight gain or loss, documentation for one of the active components has noted changes in appetite. These changes included both loss and increase in appetite as potential adverse effects.

Q: Does Reladorm interact with common supplements like melatonin or multivitamins?

A: Specific over-the-counter supplements are not individually listed in the official interaction profile. However, regulatory documents indicate that caution is necessary with any product that causes central nervous system (CNS) depression, as this may enhance the effects of the medicine.

Q: Is Reladorm known to interact with birth control pills?

A: Yes, the components of this medicine may interact with hormonal contraceptives. One component, the barbiturate, can potentially reduce the effectiveness of birth control pills, while the other component's effects may be prolonged.

Q: Can Reladorm be taken while also using an antidepressant?

A: Regulatory documents indicate that caution is necessary because some specific types of antidepressants are documented to increase the risk of CNS depression and other adverse effects when combined with this medicine.

Q: Are there known differences in how Reladorm affects men versus women?

A: Regulatory data has investigated behavioral effects of a component of this medicine, noting that potential differences in response may depend on hormonal factors. This includes effects seen in women who use oral contraceptives.

Q: What if a person taking Reladorm also has a history of mental health issues?

A: Official regulatory documents indicate that monitoring for changes in mood, worsening feelings of depression, or the emergence of suicidal thoughts may be necessary. These are considered potential serious side effects, especially when treatment begins or the dose is adjusted.

Q: What does it mean if Reladorm is a 'Schedule X' drug?

A: The schedule classification is assigned by government law and signifies the medicine’s potential for abuse and dependence. This status requires legal controls on its handling and security.

Q: Does Reladorm have a 'black box' warning, and what does it mean?

A: Yes, the active components of this medicine typically carry a Boxed Warning—which is the strongest caution issued by regulatory agencies like the FDA. This warning alerts prescribers and patients to significant risks, such as life-threatening sedation when used with opioids, misuse, addiction, and withdrawal.

Q: Can Reladorm cause unusual dreams or nightmares?

A: Yes, official safety documentation indicates that the medicine is associated with documented but rare adverse effects, including nightmares.

Q: What are common user experiences reported when first starting Reladorm?

A: The common initial experiences reported by patients often align with the medicine's clinically documented common side effects. These include initial feelings of drowsiness, sedation, or impaired coordination, which occur due to the drug’s central nervous system depressant activity.

Q: Does Reladorm affect blood pressure or heart rate?

A: Regulatory documents note that in certain circumstances, such as high doses or overdose, the components of this medicine may cause hypotension (low blood pressure) and changes in heart rate.

Q: Are there any known interactions between Reladorm and grapefruit?

A: While grapefruit is not always explicitly named on the label, the drug interacts with inhibitors of the CYP3A4 metabolic enzyme. Since some fruit-based products can affect this enzyme, it is a point of caution noted by the regulatory classification of the medicine's interactions.

Q: What is the significance of the half-life of Reladorm?

A: The half-life is a measure of how long it takes for the concentration of the medicine’s active components to be reduced by half in the body. This measurement helps determine the drug’s duration of effect and indicates the potential for next-day residual sedation.

Q: What should I do if I think I'm having an allergic reaction to Reladorm?

A: Official patient advice indicates that if signs of a serious allergic reaction (hypersensitivity) occur, such as a severe rash, swelling, or difficulty breathing, immediate medical attention may be necessary.

Q: Can Reladorm affect the results of a drug screening test?

A: Yes, the medicine contains components that belong to drug classes (barbiturates and benzodiazepines) that are typically screened for and detectable in certain laboratory drug tests.

Q: What are the ingredients in Reladorm besides the active drug?

A: Official prescribing information lists all ingredients used in the formulation of the tablet, including both the active substances and the inactive substances (excipients).

Q: Can using Reladorm affect my mood?

A: Official documentation indicates that monitoring for changes in mood, worsening feelings of depression, or the emergence of suicidal thoughts may be necessary. These mood-related changes are considered potential serious side effects.

Q: Does Reladorm have an interaction with tobacco products?

A: The medicine’s components interact with certain metabolic enzymes in the liver. Since some components in tobacco products may act as enzyme inducers, there is a possibility that smoking could alter the drug's clearance rate from the body.

How should Reladorm be stored and disposed of?

How to Store and Dispose of Reladorm

Reladorm (Cyclobarbital/Diazepam) is a controlled substance requiring strict adherence to labeled storage and disposal protocols to maintain stability and ensure security. Official regulatory documents define specific conditions for its handling.

Storage Requirements

The medication must be stored at controlled room temperature, typically between 20°C and 25°C. It must be protected from light and stored in a dry place. The tablets must be kept in their original container and the container must remain tightly closed.

Crucially, due to its classification, Reladorm must be kept out of the sight and reach of children and stored locked up to prevent unauthorized access.

Disposal Instructions

Unused or expired Reladorm must be disposed of in accordance with local, regional, and national regulations. To protect the environment, the product should not be flushed into surface water or sanitary sewer systems; disposal should occur through approved waste management channels, such as drug take-back programs.

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

Available in countries:

Equivalent of Reladorm found in:

A-Z Index: