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Zopiclon Jubilant

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Zopiclon Jubilant

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Method of action: Hypnotic

Treatment option: Insomnia

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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.

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Overview of Zopiclon Jubilant

Zopiclon Jubilant is a prescription-only medication primarily used for the short-term treatment of severe or debilitating insomnia in adults. It is classified as a synthetic compound that acts as a potent sedative and hypnotic agent to help initiate and maintain sleep. The Jubilant Pharmaceuticals N.V. brand is manufactured as film-coated tablets for oral administration.

Property Description
Active ingredient Zopiclone (INN)
Form Film-coated tablets
Pharmacological class Cyclopyrrolone (Z-drug)
Common use Management of severe sleep problems
Origin Synthetic compound

Defining Zopiclon Jubilant: Class, Composition, and Origin

Zopiclon Jubilant belongs to the cyclopyrrolone class of drugs, which are commonly grouped as non-benzodiazepine hypnotic agents or "Z-drugs." The active chemical substance is Zopiclone (the INN), a single-component product and a chemical entity distinct from traditional benzodiazepines. It is a sedative-hypnotic agent intended for use in adults. The active ingredient, Zopiclone, is a racemic mixture containing two mirror-image molecular forms. This composition has a unique binding profile to the GABAA receptor complex.

The final medicinal product, Zopiclon Jubilant, is typically dispensed as film-coated tablets for oral administration, utilizing excipients necessary for the solid dosage form.


Purpose and Function: The Role of Zopiclone as a Hypnotic Agent

The general therapeutic purpose of Zopiclon Jubilant is to address severe sleep problems by helping to suppress excessive neuronal activity that hinders sleep onset. It functions as a Central Nervous System (CNS) depressant by enhancing the effect of the brain's main inhibitory chemical, GABA (Gamma-aminobutyric acid). This use is for temporarily managing situations such as when a patient experiences intense difficulty falling asleep due to significant temporary stress.

By promoting this state of calm and sedation, Zopiclone's resulting hypnotic action is designed to temporarily relieve various manifestations of insomnia, including difficulties falling asleep, frequent nocturnal awakenings, and premature early morning awakenings.

Regulatory References

  1. EMA Public Assessment Report
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What side effects are possible with Zopiclon Jubilant?

Possible side effects and safety information

The safety profile for Zopiclon Jubilant is documented by health authorities based on frequency and the body system affected. Adverse reactions are classified according to the likelihood of their occurrence, consistent with regulatory reporting standards.


Frequency-Classified Adverse Reactions

Classification Examples of Officially Documented Effects
Common Dysgeusia (bitter/metallic taste), residual drowsiness, dry mouth, headache.
Uncommon Nausea, vomiting, dizziness, agitation, nightmares, rash.
Rare Anterograde amnesia, confusion, hallucinations, aggression, falls (especially in older adults).
Very Rare Angioedema, anaphylactic reaction, elevated liver enzymes.

These effects are formally grouped into System-Organ Classes such as Nervous System Disorders and Psychiatric Disorders.


Serious Adverse Reactions and Safety Constraints

The prescribing information highlights the potential for several serious reactions. These include anterograde amnesia and complex sleep-related behaviors (such as sleepwalking or preparing food while not fully awake). The medicine is also associated with a risk of severe hypersensitivity reactions, including angioedema.

Risk of dependence and tolerance increases with the dose and duration of treatment, with reports being more frequent when the medication is used longer than four weeks. Rebound insomnia and withdrawal phenomena may occur upon discontinuation of therapy.

Safety notes for specific groups confirm that older adults have an increased risk of dizziness and falls. The medicine is formally contraindicated in patients with known severe hepatic insufficiency, myasthenia gravis, and severe respiratory impairment.

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Overdose and Emergency Response

Overdose and When to Seek Help

Overdose involving Zopiclon Jubilant presents as a spectrum of Central Nervous System (CNS) depression. Documented initial signs may include profound deep sleep (somnolence), confusion, hypotonia (floppy muscles), and ataxia (loss of coordination). Severe overdose can escalate to life-threatening outcomes, specifically respiratory depression, marked hypotension (low blood pressure), and coma, with instances of fatal outcomes noted in regulatory documentation.

The risk of severe or lethal overdose is significantly amplified by the co-ingestion of alcohol or other CNS-depressant agents, such as opioids, a critical constraint noted in official regulatory documents. Additionally, patients with pre-existing respiratory or hepatic disorders are documented to face an increased risk of severe effects.

Due to the potential for life-threatening progression, any suspected over-ingestion requires immediate medical attention. Government guidance mandates that individuals must tell a doctor or go to the emergency department straight away. Treatment is defined as general symptomatic and supportive measures in a clinical setting, focused on maintaining vital signs. Regulatory information confirms that haemodialysis is considered of no value for managing Zopiclone overdose.

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Therapeutic Uses of Zopiclon Jubilant

Zopiclon Jubilant is used for symptomatic relief in adults experiencing severe or debilitating insomnia. The medication is applied across domains where additional symptomatic support is needed for these acute sleep problems. It is relevant in conditions characterized by periods of heightened symptoms, and is commonly used to help with a range of symptoms linked to insomnia: difficulty falling asleep, frequent nocturnal awakenings, and premature early morning awakening. This support is often used when symptoms intensify due to transient stressors or acute situational crises, and may assist with maintaining functional stability.

“The supportive relief provided contributes to easing the overall symptom load and distress caused by severe sleep loss.”

Quick Fact: Relief for Sleep Initiation and Maintenance Disturbances

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Eligibility and Restrictions for Use

Eligibility Scope

Zopiclon Jubilant is allowed for Adults aged 18 years and older without specific health limitations. It is strictly contraindicated in patients with known hypersensitivity to the drug, severe hepatic insufficiency, myasthenia gravis, severe respiratory failure, severe sleep apnoea syndrome, or a history of complex sleep behaviors (like sleep-driving) following zopiclone use.

Age, Organ Function, and Reproductive Rules

Use is not established in individuals under 18 years of age; the medicine is contraindicated in children. Older adults and patients with renal impairment or mild to moderate hepatic impairment are restricted to a lower initial dose. The medicine is not recommended during pregnancy or lactation. Use requires extreme caution in patients with a history of substance abuse due to increased risk of dependence.

Resulting Eligibility Structure

  • Contraindicated in: Severe organ impairment (hepatic/respiratory), myasthenia gravis, severe sleep apnoea, and children.
  • Restricted Use for: Older adults and patients with hepatic or renal impairment.
  • Not Recommended for: Pregnancy, lactation, and patients with a history of substance abuse.

Connection to the overall eligibility profile: Regulatory documentation defines the official eligibility profile through a system of absolute prohibitions and mandatory conditional requirements. These rules govern who is formally excluded from treatment and who must use the medicine under specific, restricted conditions due to their underlying health status or age.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Zopiclone is primarily defined by its effects on the Central Nervous System (CNS) and its metabolism via the Cytochrome P450 (CYP) 3A4 enzyme pathway.


Documented Interactions

Pharmacodynamic (Additive CNS Depression)

Interacting Product Category Effect and Constraint
Alcohol Concomitant intake is not recommended due to the enhanced risk of CNS depression and severe adverse effects.
CNS Depressants (e.g., Opioids, Antipsychotics, Sedative Antihistamines) Co-administration may result in additive CNS depression, increasing sedation and respiratory risk. Use with opioids must be reserved for when alternative treatment is not possible, requiring careful limitation of dose and duration.
Herbal Products (e.g., St. John's wort) Can increase the sedating effects.

Pharmacokinetic (Metabolic)

Interacting Product Category Effect on Zopiclone Levels Resulting Constraint
CYP3A4 Inhibitors (e.g., Ketoconazole, Erythromycin, Ritonavir) Increase plasma levels. A dose reduction of Zopiclone may be necessary.
CYP3A4 Inducers (e.g., Rifampicin, Carbamazepine, Phenytoin) Decrease plasma levels. A dose increase of Zopiclone may be necessary.

Procedural and Population-Specific Notes

The officially documented interaction information requires that patients, particularly the elderly or debilitated, be monitored closely when co-administering any drug that may enhance sedation. The profile also lists substances that may interfere with laboratory tests, which necessitates careful interpretation of results or alternative testing procedures. Strong consideration must be given to discontinuing Zopiclone if complex sleep behaviors are reported, which may be potentiated by concomitant use of other CNS depressants.

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Mechanism of Action

Action on the GABA A Inhibitory Receptor System

The primary mechanism of action involves the gamma-Aminobutyric Acid Type A ( GABA A) receptor complex, a critical inhibitory ion channel in the brain. Zopiclone acts as a Positive Allosteric Modulator ( PAM), binding to a distinct recognition site to enhance the inhibitory effect of the native GABA neurotransmitter. This molecular interaction facilitates a shift in the balance of inhibitory signaling within the brain.


The Mechanistic Cascade of Chloride Ion Flow and Neuronal Inhibition

By enhancing GABA's action, the drug increases the influx of negatively charged chloride ( Cl^-) ions into the neurons. This rapid surge of negative charge causes neuronal hyperpolarization, effectively making the nerve cells resistant to activation. This cellular cascade culminates in a widespread suppression of Central Nervous System ( CNS) signaling, resulting in the physiological state of reduced arousal.


Receptor Adaptation and Constraints on the Mechanism

The drug's mechanism is subject to biological adaptation upon chronic exposure. Chronic engagement of the receptor can lead to tolerance through the functional uncoupling of the receptor complex. Cessation of the drug removes the external Positive Allosteric Modulator, and this adaptation can temporarily result in a burst of heightened neuronal excitability, known as rebound phenomena.

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Dosage and Administration Information

Zopiclon Jubilant is administered exclusively by the oral route as film-coated tablets in 3.75 mg and 7.5 mg strengths. The tablet must be swallowed whole and should not be crushed or chewed. The medication is to be taken as a single intake immediately before retiring for the night, ensuring the patient is able to secure a full 7 to 8 hours of uninterrupted sleep afterward. The medicine may be taken with or without food.

For adults, the standardized recommended dose is 7.5 mg, which is also defined as the maximum dose that should be taken in a 24-hour period. Treatment must be for the shortest possible duration and should not exceed four weeks in total, with this limit including any necessary period for dose reduction (tapering). For instances of short-term insomnia, a course of 2 to 3 weeks is typically indicated.

A reduced starting dose of 3.75 mg is specified for several patient populations. This includes older adults (aged 65 years and over) and those with hepatic insufficiency, renal insufficiency, or chronic respiratory insufficiency. Zopiclon is not recommended for use in children and adolescents under 18 years, as safety and efficacy have not been established. If the scheduled dose is missed at bedtime, the instruction is to skip the missed dose and resume the next night, with a strict prohibition against taking two doses to compensate.

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Recent Clinical Evidence

Recent Clinical Evidence

Mechanism and Primary Indication

Zopiclon is classified as a non-benzodiazepine hypnotic from the cyclopyrrolone chemical class. Research indicates its mechanism of action involves positive allosteric modulation of the GABAA receptor complex in the central nervous system. This action enhances the effect of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), which aids in promoting sedation and initiating sleep.

Efficacy and Sleep Architecture

Clinical trials primarily focus on the short-term treatment of insomnia, typically for a duration of two to four weeks. Studies have consistently examined the drug's effect on key sleep parameters, generally showing findings that favor the treatment group compared to placebo in:

  • Sleep Latency (SOL): Reduction in the time required to fall asleep.
  • Total Sleep Time (TST): Increase in the overall duration of sleep.
  • Wake Time After Sleep Onset (WASO): Decrease in the amount of time spent awake after initially falling asleep.

Research has noted that, compared to older sedative-hypnotics, Zopiclon may have less impact on the total duration of REM sleep (rapid eye movement sleep) and slow-wave sleep.

Safety and Tolerability

Safety investigations examine the risk profile, with reported adverse events being dose and duration-dependent. The most frequently reported events in clinical trials include dry mouth, metallic taste (dysgeusia), and mild gastrointestinal upset.

Research has also investigated the risk of rebound insomnia (a temporary worsening of sleep problems upon discontinuation) and potential for dependence. These risks are typically noted to increase with higher doses and extended periods of use. Further studies are continually needed to evaluate the long-term safety profile, particularly in vulnerable populations such as older adults, where the risk of next-day cognitive impairment and falls remains a central focus of research.

Key Studies & References

  1. Zopiclone Grindeks 7.5 mg film-coated tablets - Summary of Product Characteristics (Regulatory Monograph/Label)
  2. IMOVANE (zopiclone) Tablets, 5.0 mg and 7.5 mg Hypnotic and Sedative - Product Monograph (Mechanism/Sleep Architecture)
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Frequently Asked Questions (FAQ)

Common questions about Zopiclon Jubilant (FAQ)


Q: How quickly does Zopiclon Jubilant usually start to work?

The product information notes that the medicine should be administered about half an hour before the intended bedtime. The highest concentration of the medicine in the bloodstream is typically reached within 1.5 to 2 hours after swallowing the tablet.


Q: What is the typical duration of Zopiclon Jubilant's effects?

Regulatory information indicates that the medicine's elimination half-life, which is the time it takes for the concentration to drop by half, is approximately 5 hours. This period may be slightly longer, around 7 hours, for older adults.


Q: Why do people sometimes feel a bitter taste after taking Zopiclon Jubilant?

An unpleasant taste, often described as bitter or metallic (dysgeusia), is a very common side effect reported in clinical trials and is listed in official product information. This effect is generally not considered medically serious.


Q: Is it normal to feel a bit groggy the morning after taking Zopiclon Jubilant?

Official documentation lists feeling sleepy, tired, or having residual drowsiness the next morning as a common side effect. This is related to the drug's residual effects, which can be dose-related.


Q: Does Zopiclon Jubilant cause memory issues for some users?

The potential for a type of memory loss called anterograde amnesia is a reported side effect. This means a person may have a poor memory of events that occur after the tablet is taken, especially if sleep is interrupted or delayed.


Q: Are there any common side effects people report when using Zopiclon Jubilant?

According to official reports, common side effects that occur in more than 1 in 100 people include an unpleasant bitter/metallic taste, dry mouth, headache, and feeling tired or drowsy the following morning.


Q: Does Zopiclon Jubilant interact with common pain relievers?

Regulatory documents prioritize warnings for co-administration with other Central Nervous System (CNS) depressants and opioids. While drug interaction data focuses on these specific classes, consulting the product label is always recommended before combining any medicines.


Q: Is it safe to drink coffee or caffeine while taking Zopiclon Jubilant?

Product information recommends avoiding the use of caffeine-containing drinks, such as coffee, tea, cola, or energy drinks, while taking this medication. Caffeine is a stimulant and may counteract the medicine's sedative effects.


Q: Are there any dietary restrictions when using Zopiclon Jubilant?

The official drug monographs for zopiclone generally do not list specific dietary restrictions beyond the need to avoid alcohol. The tablets may be taken either with or without food.


Q: Can Zopiclon Jubilant be used in children or adolescents?

Official prescribing information states that Zopiclon Jubilant should not be used in individuals under 18 years of age. This is because the safety and effectiveness of the medication have not been established in children and adolescents.


Q: What is the recommended storage temperature for Zopiclon Jubilant tablets?

The tablets should be stored in a dry place, protected from light, at a temperature below 25 C (77 F). This is typically referred to as controlled room temperature.


Q: Has there been much research done on the long-term effects of Zopiclon Jubilant?

The medication is approved for short-term treatment only, typically for up to 4 weeks. Regulatory bodies indicate that the evidence base for long-term use is limited, and such use is generally discouraged due to the potential for increased adverse effects and dependence.


Q: What percentage of users typically experience side effects from Zopiclon Jubilant?

Side effects are classified by frequency, such as 'Common' (occurring in more than 1 in 100 people), as detailed in the official documentation. The full percentage ranges for these categories are found in the comprehensive regulatory label.


Q: Do generics of zopiclone work exactly the same as Zopiclon Jubilant?

Regulatory bodies assess that generic versions containing zopiclone have demonstrated comparable bioavailability to the brand-name product. This means the active ingredient is absorbed at a similar rate and to a similar extent as the brand.


Q: Is it possible to develop a tolerance to Zopiclon Jubilant over time?

Official warnings state that tolerance, which is a decrease in the drug's effectiveness, may develop after repeated use for a few weeks. For this reason, treatment is restricted to the shortest possible duration.


Q: Does Zopiclon Jubilant help with falling asleep or staying asleep?

Official information states the medicine is used for treating insomnia that includes both difficulty in falling asleep (sleep initiation) and difficulty in staying asleep due to frequent nocturnal awakenings.


Q: Is it true that Zopiclon Jubilant can sometimes cause sleepwalking?

Regulatory warnings have noted reports of complex sleep-related behaviors, which include sleepwalking, 'sleep-driving,' and performing other activities while not fully awake.


Q: Does Zopiclon Jubilant interact with herbal supplements like St. John's Wort?

Regulatory warnings specifically list St. John's Wort as a herbal product that may increase sedative effects. Any decision regarding combination use should be based on the product label.


Q: Can Zopiclon Jubilant be crushed or split for easier swallowing?

Official instructions for administration state that the film-coated tablets should be swallowed whole and should not be crushed, split, or chewed before being ingested.


Q: What are the typical contraindications for Zopiclon Jubilant use?

Official product information lists several contraindications, or conditions where the drug should not be used. These include severe liver or respiratory failure, myasthenia gravis (severe muscle weakness), and severe sleep apnoea syndrome.


Q: What are the legal implications of traveling with Zopiclon Jubilant internationally?

Due to its classification as a sedative, requirements for international travel typically include declaring all medications and possessing the original container along with a valid prescription or written statement.


Q: How long after taking Zopiclon Jubilant is it safe to operate machinery?

The product information states that the risk of impaired ability to drive or operate machinery is increased if these activities are performed within 12 hours of the dose. It is intended to be taken only when a full night's sleep is possible.


Q: Does the efficacy of Zopiclon Jubilant change over the course of treatment?

There is a risk that the effectiveness of the medication (efficacy) may decrease over the course of treatment due to the potential development of tolerance. This is a primary reason why treatment is limited to short periods.


Q: Can Zopiclon Jubilant be taken with over-the-counter allergy medications?

Regulatory warnings caution against taking zopiclone with any other medicine that causes Central Nervous System (CNS) depression. Many over-the-counter allergy medications contain sedating antihistamines, which could increase the risk of excessive drowsiness or breathing difficulties.


Q: What is the main chemical class of Zopiclon Jubilant?

The drug belongs to the cyclopyrrolone chemical group. It is classified as a non-benzodiazepine hypnotic agent, which is also commonly referred to as a 'Z-drug.'


Q: Does taking Zopiclon Jubilant cause vivid dreams or nightmares?

Nightmares and other psychiatric disturbances are listed as reported adverse reactions in the official documentation for this medication.


Q: What are some less common but possible side effects of Zopiclon Jubilant?

Less common adverse reactions include, but are not limited to, feelings of dizziness, nausea, vomiting, agitation, rash, confusion, hallucinations, and falls, particularly in older adults.


Q: What is the maximum duration for Zopiclon Jubilant treatment?

Official prescribing guidance specifies that the duration of treatment must be the shortest possible and should not exceed four weeks in total. This includes any necessary period for dose reduction when discontinuing the medicine.

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How should Zopiclon Jubilant be stored and disposed of?

Storage and Disposal

Zopiclone tablets must be stored under specific regulatory conditions to maintain their stability and efficacy.

Storage Conditions

Element Requirement
Temperature Store below 25 C (77 F).
Protection Keep protected from light and moisture.
Security Keep out of the sight and reach of children and store securely to prevent theft or misuse.

Disposal Instructions

Unused or expired Zopiclone must be disposed of according to local regulations for pharmaceutical waste. Do not throw away this medicine via wastewater or household waste. The preferred method is to utilize community drug take-back programs or consult a pharmacist for official disposal procedures.

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

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