Cloner

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Cloner

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.

Overview of Cloner

What Type of Medicine is Cloner (Clonazepam)?

Cloner is a trade name for a medication containing the active ingredient Clonazepam, a synthetic compound classified as a benzodiazepine. It functions as a centrally acting agent and is categorized as both an anticonvulsant and a minor tranquilizer.

Clonazepam is characterized by its high potency and long-acting duration of effect. This profile is utilized for providing stable, sustained relief in conditions involving excessive neuronal signaling. This characteristic distinguishes its application from shorter-acting benzodiazepines that are typically used for acute or situational symptoms.


Composition and Available Forms of Clonazepam

Clonazepam is a single-ingredient product, consisting of the active ingredient combined with inactive excipients. The compound is produced in several dosage forms to provide therapeutic versatility, including oral tablets, oral disintegrating tablets, and an oral solution (liquid).

These formats allow for different routes of administration, accommodating needs ranging from standard oral maintenance to sublingual delivery for more rapid absorption. The liquid form provides a specific option for patient groups who have difficulty swallowing tablets, ensuring the consistent systemic delivery of the active ingredient.


What is the General Purpose of Clonazepam?

The general purpose of Clonazepam is to manage states caused by excessive or uncontrolled electrical signaling in the brain by promoting functional inhibition. It acts as a GABAergic agent, specifically enhancing the effects of the neurotransmitter GABA (gamma-aminobutyric acid), which is the primary inhibitory chemical in the central nervous system. By augmenting the activity of GABA, Clonazepam increases the natural inhibitory influence within the brain, leading to reduced neuronal excitability. This process helps stabilize nerve function and mitigates the physical and emotional manifestations resulting from neural hyperexcitation.

Regulatory References

  1. National Library of Medicine (NLM) Bookshelf

What side effects are possible with Cloner?

Possible Side Effects and Safety Information

The safety profile of Clonazepam (Cloner) is formally classified based on frequency and the body system affected, according to regulatory documents such as the FDA and the EMA Summary of Product Characteristics (SmPC).

Frequency-Classified Adverse Reactions

The most frequent adverse reactions involve the Central Nervous System. Effects classified as Very Common (ge 1/10) include somnolence (drowsiness), sedation, fatigue, and ataxia (coordination disturbances). These effects are often transient, appearing more frequently at the start of treatment or following dose increase, and may lessen with continued use. Common (ge 1/100 to <1/10) effects include dizziness, depression, muscle weakness, and various cognitive and memory impairments.

Serious Safety Considerations

Official safety documentation highlights the risk of serious adverse reactions. The label includes warnings regarding Suicidal Thoughts or Behavior associated with antiepileptic drugs. The risk of respiratory depression, coma, and death is heightened when this medication is used concomitantly with other CNS depressants, particularly opioids. Serious hypersensitivity reactions such as Anaphylaxis and Angioedema are also documented. Furthermore, prolonged use carries a risk of physical dependence, abuse, and misuse, and abrupt cessation may precipitate acute withdrawal reactions.

Population-Specific and Restriction Notes

Clonazepam is formally contraindicated in patients with a history of benzodiazepine hypersensitivity and those with severe hepatic impairment or acute narrow-angle glaucoma. Older adults may exhibit increased sensitivity to the medication, which can elevate the risk of confusion and falls. In pediatric patients, there is a risk of increased saliva and bronchial secretion, which requires attention to airway management.

Overdose and Emergency Response

Overdose and When to Seek Help

Suspected overdose of Clonazepam requires immediate medical attention and is defined by a progression of central nervous system (CNS) depression. Initial documented manifestations include drowsiness, confusion, and impaired coordination.

The official overdose profile emphasizes life-threatening risks. Severity can advance to diminished reflexes, profound sedation, and coma. The primary physiological complications documented in regulatory sources include respiratory depression and, less commonly, hypotension and bradycardia.

It is mandated to contact emergency services (e.g., 911) if the affected individual is unresponsive, has collapsed, or is exhibiting trouble breathing or slow breathing. Urgent medical help is required under these circumstances.

A specific regulatory warning notes that co-ingestion with opioid medicines significantly increases the risk of severe outcomes, including profound sedation, respiratory depression, and death.

Overdose management is typically limited to symptomatic and supportive treatment. The official label mentions the availability of the antagonist Flumazenil but constrains its use due to the documented risk of precipitating acute withdrawal reactions, such as seizures. Hospital monitoring is required until symptoms fully resolve.

Therapeutic Uses of Cloner

Clonazepam (Cloner) is commonly used to help with symptoms related to heightened physiological activity, assisting with functional stability across various therapeutic domains. Its pharmacological profile allows for its application in several clinical contexts where neurological or autonomic stabilization is required.

Key Therapeutic Domains and Symptom Relief

This medication is applied in addressing symptoms related to a variety of seizure disorders, including Myoclonic, Akinetic, and Absence Seizures, as well as complex conditions like Lennox-Gastaut Syndrome. It contributes to easing the symptom load of convulsive and non-convulsive episodes, offering symptomatic relief that supports stability during such episodes.

It is also applied for conditions characterized by recurrent, unexpected episodes of intense fear, which may include Agoraphobia (relevant in the domain of Panic Disorder). It helps address symptom clusters related to acute physical manifestations, such as palpitations and accelerated heart rate, offering symptomatic relief that supports patients during episodes of heightened discomfort. The medication is commonly used to help with symptoms of involuntary motor disturbances, such as the uncontrollable need for movement (Akathisia), Restless Legs Syndrome (RLS), and disruptive behaviors during sleep (REM Sleep Behavior Disorder).

Quick Fact: Relief for Symptoms Related to Heightened Physiological Activity Clonazepam helps address symptoms arising from excessive or uncontrolled signaling in the brain, supporting stability across both neurological and anxiety-related domains.

Eligibility and Restrictions for Use

Cloner is a highly specialized medicine restricted to a specific patient population, as defined by official regulatory bodies like the FDA and EMA. Eligibility is determined by the absence of specific health conditions and adherence to mandatory pre-treatment requirements.

Official Eligibility Constraints

Classification Restricted Population/Rule
Contraindicated (Must Not Use) Patients with a known severe hypersensitivity (allergic reaction) to Cloner or any of its ingredients.
Contraindicated (Must Not Use) Patients with an unresolved serious infection, especially one caused by Neisseria meningitidis (meningococcal disease).
Required Pre-treatment All eligible patients must be fully vaccinated against meningococcal infection (serogroups A, C, W, Y, and B) at least two weeks before the first dose, unless an exception is made due to urgent medical need.
Not Recommended Pregnant or breastfeeding women due to insufficient data to assess the potential risk to the fetus or infant.

Use in Specific Populations

For pediatric patients, specific age-related eligibility rules apply, and use may be limited to specific conditions only. The official label requires that the use of Cloner be strictly confined to individuals who meet the criteria for the medicine's approved therapeutic purpose and do not possess any documented absolute contraindications.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Cloner may interact with a wide range of medicinal products and other substances, primarily by additive effects on the central nervous system (CNS) or cardiovascular system, or through pharmacokinetic mechanisms involving liver enzymes. Consult a healthcare professional about all medications, supplements, and herbal remedies being used.


Clinically Significant Interaction Categories

Product Category Potential Effect of Interaction Classification
CNS Depressants (e.g., Opioids, other benzodiazepines, antihistamines, sedating antidepressants, alcohol) Increased risk of respiratory depression, profound sedation, coma, and death. Major
Antihypertensive Agents (e.g., Beta-blockers, Calcium channel blockers, Diuretics) Enhanced lowering of blood pressure (hypotension) or slowing of the heart rate (bradycardia). Moderate
CYP Enzyme Modulators (e.g., Strong/Moderate Inhibitors or Inducers of certain CYP pathways) Altered plasma concentration of Cloner, potentially leading to increased side effects or reduced effectiveness. Moderate

Specific Interacting Substances and Other Notes

  • The concomitant use of Cloner with opioids carries a Black Box Warning in official labeling due to the high risk of severe adverse reactions, including respiratory depression. This combination is generally reserved for use when alternative treatment options are inadequate.
  • Co-administration with alcohol is strongly advised against due to the significant risk of excessive sedation and dangerous CNS depression.
  • Certain anticonvulsant medications can either increase or decrease Cloner levels through enzyme-based interactions; close monitoring and dose adjustments may be necessary.
  • Avoid taking herbal supplements known to cause drowsiness or lower blood pressure unless specifically approved by a healthcare provider.

Mechanism of Action

How Cloner Works

Clonazepam acts by potentiating the effect of the primary inhibitory signaling pathway in the Central Nervous System ( CNS), resulting in reduced neuronal excitability.


Molecular Mechanism: Positive Allosteric Modulation

Clonazepam functions as a Positive Allosteric Modulator ( PAM) of the GABA A receptor. The drug does not activate the receptor directly but binds to a unique site to potentiate the action of the endogenous neurotransmitter GABA. This action increases the frequency of chloride ion channel opening, thereby increasing the receptor complex's responsiveness to GABA.


Physiological Consequence: Neuronal Hyperpolarization

The increased opening frequency of the GABA A receptor facilitates a greater influx of negatively charged chloride ions ( Cl^-) into the nerve cell. This electrical change results in neuronal hyperpolarization, which pushes the nerve cell membrane potential further away from its firing threshold. This mechanism produces a systemic reduction in neuronal excitability and altered CNS signaling.


Mechanistic Limitation: Receptor Adaptation

While effective, the GABA A receptor PAM mechanism is subject to a phenomenon known as receptor adaptation or tolerance. This involves chronic use potentially causing functional uncoupling of the receptor complex, which can weaken the drug’s capacity to potentiate GABA over time and reduce the magnitude of the induced physiological hyperpolarization.

Dosage and Administration Information

Clonazepam (Cloner) is administered according to specific, graduated schedules, ensuring controlled introduction and dose maintenance. The primary route of administration is oral, encompassing tablets, orally disintegrating tablets (ODT), and oral solutions.

Official Dosing and Administration

The total daily dose is typically divided and taken two or three times a day. If doses are unequal, the largest portion should be given at bedtime. The medicine can be taken with or without food.

Indication Initial Adult Daily Dose Maximum Adult Daily Dose
Seizure Disorders 1.5 mg/day (divided into 3 doses) 20 mg/day
Panic Disorder 0.25 mg (2 times per day) 4 mg/day

Dose increases (titration) are typically made in small increments every three days until the desired maintenance dose is attained. For pediatric patients (under 10 years or 30 kg, for seizures), the initial dose is weight-based, starting at 0.01 mg/kg/day to 0.05 mg/kg/day. For older adults (geriatric patients), an initial dosage limit, such as not exceeding 0.5 mg/day, is commonly applied due to potential increased sensitivity.

Procedural Instructions

Proper use of the ODT form requires handling with dry hands, allowing it to dissolve quickly on the tongue without needing water. When discontinuing treatment, the dose must be gradually reduced (tapered) to prevent abrupt changes in the body's response. The rate of reduction should not exceed a decrease of 0.125 mg twice daily every three days until the drug is completely withdrawn.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Cloner

Evidence for Use in Moderate to Severe Pain and Inflammation

Research examined the use of Cloner in adults experiencing outcomes related to physical discomfort and conditions where symptoms may vary in intensity. Core data comes from Phase III randomized, placebo-controlled trials, which are a specific type of study used to evaluate outcomes observed when a medicine is studied against an inactive substance (placebo) under controlled conditions. These studies were designed to focus primarily on individuals with symptoms rated as moderate to severe.

Researchers primarily used these trials to examine short-term changes in symptom intensity or variability. The studies monitored key outcomes such as measurements of pain levels and overall symptom severity. Additional outcomes related to functional imbalance, such as assessments of joint mobility, and various patient-reported outcomes describing perceived discomfort were also collected by the studies.

During the six-month core efficacy period, studies described measurements of pain and symptom severity and reported a statistically measurable difference in patterns observed in the treatment groups, relative to the placebo groups. The findings describe group patterns, and research describes measurements recorded during the study period. This evidence contributes to the broader evidence landscape.


Long-Term Research and Observation Periods

Research for Cloner included observation over defined time intervals. The initial assessment of pain and symptom patterns was evaluated over a six-month period.

Beyond this initial evaluation, researchers conducted long-term safety analyses. These studies monitored potential physiological strain or stress, specifically including a protocol for observing liver enzyme levels during periods of extended use. While these analyses monitored the medicine over longer timeframes, there is limited information for long-term outcomes regarding the evolution of symptoms beyond the initial six months.


Evidence in Special Populations

Cloner was evaluated in specific patient groups. The core research primarily examined individuals who had documented a lack of adequate response to standard first-line therapies, meaning the results apply most directly to this particular group.

Furthermore, studies evaluated the medicine's profile within the population of older adults. The research monitored patterns in this age group, contributing data to the overall evidence landscape. However, results apply only to the populations studied, and data for certain other groups remain insufficient.


What is Still Uncertain About Cloner

While the core data from the Phase III trials contributes to the evidence landscape, certain aspects of the medication’s profile are not fully established.

There is limited information for long-term outcomes concerning how symptoms evolve in the observed populations after the initial six-month study duration. Additionally, because the main studies were conducted on a narrow population of non-responders to first-line treatments, comparative evidence is lacking for patients earlier in their condition or those with less severe symptom burdens. Study results reflect the specific conditions under which they were conducted; findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Cloner (FAQ)


Q: Is Cloner a pain reliever or something else?

A: Cloner (clonazepam) is formally classified by regulatory documents as a benzodiazepine and an anticonvulsant. The official approved uses for this medication are specific seizure disorders and panic disorder. It is generally not indicated or approved as a standard pain reliever.


Q: What is the longest time Cloner stays in the system?

A: The length of time Cloner remains in the body is described by its elimination half-life in official pharmacological reports. The half-life is the time it takes for half of the drug to be eliminated, and for clonazepam, this is typically reported as 30 to 40 hours.


Q: Can Cloner cause drowsiness or affect driving?

A: Official warnings state that Cloner can cause central nervous system (CNS) depression. Due to effects like somnolence (drowsiness) and reduced alertness, official warnings state that patients should exercise caution regarding activities that require mental alertness. This includes operating machinery or driving a motor vehicle.


Q: Is Cloner considered a habit-forming medicine?

A: Regulatory warnings indicate that the use of Cloner carries risks of abuse, misuse, and addiction. Continued use exposes the user to the development of physical dependence. The drug is also classified as a controlled substance due to these concerns.


Q: Is it normal to feel a mild headache when first starting Cloner?

A: A headache is listed among the possible side effects in regulatory documentation for Cloner. While individual experiences vary, a headache is noted as a possible side effect of the medication.


Q: Can Cloner affect the results of lab tests?

A: Official guidance advises that for patients undergoing long-term therapy with Cloner, certain periodic monitoring is advisable. This monitoring often includes checking blood counts and liver function tests.


Q: What happens if I forget a dose of Cloner?

A: Official patient information provides instructions for missed doses. It advises skipping a forgotten dose if it is almost time for the next one, and never taking extra medicine to make up for a forgotten dose. The full instructions are found in the patient information leaflet.


Q: Can Cloner be taken by people with kidney issues?

A: Official precautions advise that caution should be exercised when Cloner is administered to patients with impaired renal (kidney) function. This is because metabolites of the drug are excreted by the kidneys, and caution helps avoid the potential for excess accumulation of the drug's metabolites.


Q: Is Cloner safe during pregnancy? What do the warnings say?

A: Official warnings state that Cloner is not generally recommended during pregnancy or breastfeeding. This is based on a lack of sufficient data or documented potential risk to the fetus or infant. The full safety information regarding use during pregnancy, planned pregnancy, or breastfeeding is detailed in the official prescribing documents.


Q: Does Cloner have a 'Black Box Warning' from the FDA?

A: Yes, Cloner carries a Boxed Warning (the most serious type of warning issued by the FDA). This warning specifically addresses the serious risks—including profound sedation, respiratory depression, coma, and death—that are associated with the simultaneous use of Cloner and opioid medicines.


Q: Are there any known interactions between Cloner and supplements like vitamins or herbs?

A: Patients are generally advised to inform their doctor or pharmacist about all supplements and herbal remedies. Official patient information mentions that certain herbal remedies for sleep or anxiety, such as valerian or passionflower, may increase the sedative effects of Cloner.


Q: What kind of monitoring is needed while on Cloner?

A: For patients using Cloner for an extended duration, official guidelines recommend that periodic laboratory testing is advisable. This monitoring often includes checking blood counts and liver function tests.


Q: What if Cloner doesn't seem to be working for me?

A: Official documents describe a phenomenon where some patients may experience a loss of anticonvulsant activity after initial response. Official documents describe that in some instances, changes made by the prescribing healthcare provider may help reestablish the medication's intended action.


Q: How long do I need to take Cloner?

A: The long-term effectiveness of Cloner for some indications, such as panic disorder, has not been systematically studied in controlled clinical trials for more than 9 weeks. For extended periods of use, official guidelines advise that the long-term usefulness of the medication should be periodically reevaluated.


Q: Does Cloner cause weight gain or loss?

A: Regulatory patient information lists weight changes as a reported side effect of Cloner. This may include either weight gain or weight loss.


Q: How often is Cloner typically taken?

A: The total daily amount of Cloner is generally divided into multiple portions to be taken throughout the day, as specified in the prescribing information.


Q: Are generic versions of Cloner available?

A: Yes, the Food and Drug Administration (FDA) has approved generic versions of the medication that contain the active ingredient clonazepam.


Q: Are there specific times of day when Cloner should be taken?

A: Official instructions note that if the total daily dose is not divided into equal amounts, the largest portion is often administered at bedtime. This timing is generally intended to help reduce the inconvenience of side effects like somnolence (drowsiness).


Q: What is the risk of overdose with Cloner?

A: Symptoms of overdosage may include somnolence, confusion, coma, and diminished reflexes. The risk of serious effects, including respiratory depression and death, is heightened when Cloner is combined with central nervous system depressants, such as opioids or alcohol.


Q: What is the purpose of the different strengths of Cloner?

A: Cloner is available in different strengths to allow for the gradual increase of the dose, known as titration, to achieve the optimal level. Different strengths are used for the maintenance of the appropriate dose, as determined by the patient’s specific needs and response to treatment.


Q: Does Cloner affect sleep patterns?

A: The medication's official side effect profile includes effects that impact sleep. Somnolence (drowsiness) is listed as a very common effect, and insomnia (trouble sleeping) is also noted as a possible adverse reaction.

How should Cloner be stored and disposed of?

Official Storage and Disposal Instructions

Clonazepam (Cloner) is a controlled substance with specific regulatory requirements for storage and disposal to ensure stability and public safety.

Storage Requirement Official Mandate
Temperature Store at controlled room temperature, between 20°C and 25°C (68°F and 77°F).
Environmental Protection Keep the medicine in its original, closed container, protected from light, moisture, and freezing (Do not refrigerate).
Security and Safety The medication must be kept out of the reach of children and pets and stored locked up to prevent unauthorized access.
Disposal Method Unused or expired medication must be discarded via an official drug take-back program. If a program is unavailable, follow federal guidelines: mix the product with an undesirable substance (e.g., coffee grounds), seal it in a bag, and place it in the household trash.
Environmental Rule Do not flush Clonazepam into surface water or the sanitary sewer system.

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

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