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Nabilone 1mg Capsules

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Nabilone 1mg Capsules

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Treatment option:

Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Nabilone 1mg Capsules

Property Description
Active ingredient Nabilone (INN)
Form Capsule (Oral Solid Dosage Form)
Pharmacological class Synthetic Cannabinoid, Antiemetic Agent
Common purpose Control of severe nausea and vomiting
Origin Synthetic analogue (chemically manufactured)

What Type of Medicine is Nabilone 1mg Capsules?

Nabilone 1mg Capsules is a specialized, prescription-only pharmaceutical drug classified as a synthetic cannabinoid and an antiemetic agent. The drug entity contains the active ingredient Nabilone, which is structurally similar to Delta^9-tetrahydrocannabinol (THC), the primary psychoactive component of the Cannabis plant. This unique pharmacological positioning is clinically recognized, as Nabilone is typically reserved for use when conventional antiemetic treatments have proven inadequate.

The drug's high-level classification as an antiemetic agent confirms its core action relies on engaging the body’s endogenous cannabinoid receptor system. This mechanism is supported by pharmacological studies demonstrating Nabilone's role as a potent agonist of cannabinoid receptors. This indicates the medicine provides a centrally acting alternative for patients whose symptoms are refractory to standard therapies.

Composition and Origin: Synthetic vs. Natural Cannabinoids

The active ingredient within this oral capsule dosage form is the pure, chemically synthesized substance, Nabilone. This compound is considered a synthetic analogue because it was manufactured to mimic the therapeutic activity of natural cannabinoids while offering a highly standardized product. The medication is available as a capsule, facilitating its intended oral administration.

This synthetic origin provides a consistent chemical profile, a key differentiating factor from variable, naturally derived extracts. Its consistent composition ensures a predictable therapeutic effect. The synthetic nature also establishes Nabilone as an orally active agonist primarily targeting the central nervous system's CB1 receptor, which is critical for the antiemetic effect.

The General Purpose of Nabilone 1mg Capsules

The overarching benefit of Nabilone 1mg Capsules is its capacity to modulate central nervous system activity to help prevent and control persistent, severe nausea and the reflex of vomiting. The action occurs by centrally influencing the signals processed by the chemoreceptor trigger zone and the brain's vomiting center. By focusing on these neurological sites, the synthetic therapeutic agent effectively intercepts the distress signals that trigger these symptoms. This specific central intervention serves the crucial general purpose of providing reliable symptomatic relief for patients experiencing profound difficulty with emesis management.

Regulatory References

  1. NIH LiverTox
  2. NIH StatPearls
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What side effects are possible with Nabilone 1mg Capsules?

Possible Side Effects and Safety Information

The safety profile of Nabilone 1mg Capsules is primarily characterized by effects related to its activity on the Central Nervous System (CNS) and Psychiatric systems, as consistently documented in official regulatory labeling.

Adverse reactions are formally grouped and classified by frequency. The official regulatory documents classify several effects as Very Common (occurring in ge 1/10 patients), including drowsiness, dry mouth, dizziness/vertigo, euphoria, and visual disturbance. Other reactions, such as headache, hypotension, tachycardia, disturbed concentration, and depression, are classified as Common (occurring in ge 1/100 to < 1/10 patients).

Clinically Significant and Serious Adverse Reactions

The most clinically significant adverse reactions noted in product information are psychotic episodes, which may include confusion, paranoia, and frank psychosis. Caution is also required regarding severe cardiovascular events, specifically clinically significant hypotension and tachycardia. Adverse reactions affecting the CNS, such as drowsiness and dizziness, are often noted to be more prominent at the start of treatment.

Population-Specific Safety Considerations

The drug is generally contraindicated in individuals with a history of hypersensitivity to any cannabinoid agent. Safety documentation advises specific caution for older adults due to increased sensitivity and risk of falls, and for patients with a history of severe psychiatric illness or hepatic impairment. The use of Nabilone is formally restricted in situations that require mental alertness, such as driving or operating machinery, due to the potential for impairment documented in its safety profile.

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Overdose and Emergency Response

Overdose of Nabilone 1mg Capsules is officially documented to involve a range of effects on the central nervous system (CNS), cardiovascular system, and respiratory system. Documented manifestations include severe psychological disturbances such as psychotic episodes, hallucinations, confusion, and severe anxiety reactions. The most serious outcomes listed in regulatory documents are coma, respiratory depression, seizures, severe hypotension, and tachycardia.

The official prescribing information indicates that overdose may be considered, even at prescribed doses, if disturbing psychiatric symptoms are present. Immediate medical help must be sought by contacting a poison control center or emergency services. Urgent care is mandated if the affected person has collapsed, is experiencing trouble breathing, has a seizure, or cannot be awakened.

Management is symptomatic and supportive, as no specific antidote is known. Official guidance includes administering activated charcoal to decrease absorption, using intravenous fluids or vasopressors for hypotension, and observing the patient in a quiet environment. Subsequent dosing must be withheld until the patient's mental status returns to baseline. The potential for severe mental effects in overdose is noted as a special concern for elderly patients.

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Therapeutic Uses of Nabilone 1mg Capsules

Nabilone is a specialized therapy primarily used for managing symptoms related to severe nausea and vomiting caused by cancer chemotherapy, particularly in patients who have failed to respond adequately to standard medications. This medicine is generally reserved for highly disruptive, treatment-related sickness. It is used for managing symptoms that create noticeable physiological strain and interfere significantly with daily functioning. This provides support that helps ease the overall symptom burden during aggressive treatment phases.

The medication is typically applied in clinical settings that involve refractory symptoms, meaning the persistent sickness has proven resistant to conventional antiemetic treatments. The medicine is commonly used to help with symptom clusters related to severe chemotherapy-induced nausea, intractable vomiting, and symptoms of profound gastrointestinal distress. This is considered relevant in situations where short-term symptomatic assistance is needed for patients with profound difficulty in managing their sickness.

“This medication may be part of symptomatic management in situations where patients experience severe treatment-related sickness that has not responded adequately to conventional approaches.”

It provides supportive relief during highly symptomatic phases, contributes to improved comfort during periods of heightened symptoms, and may assist with maintaining functional stability during persistent distress.


Quick Fact: Supportive Management for Refractory Emesis


Regulatory References

  1. NIH MedlinePlus overview on Nabilone
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Eligibility and Restrictions for Use

Official Eligibility and Patient Restrictions

The use of Nabilone 1mg Capsules is strictly defined by regulatory guidelines, limiting its eligibility to certain patient populations and clinical contexts. This medicine is primarily indicated for use by adult patients (ge 18 years) for severe nausea and vomiting associated with cancer chemotherapy, specifically when conventional antiemetic treatments have failed.

Classification Restricted Populations
Contraindicated (Must NOT Use) Patients with a known hypersensitivity to Nabilone or any other cannabinoid agent. Those with a history of psychotic reactions (e.g., schizophrenia). Nausea/vomiting arising from a cause other than cancer chemotherapy (UK SmPC).
Use Not Recommended Pediatric patients (lt 18 years) due to unestablished safety and efficacy. Pregnant and nursing mothers (safety not established). Patients with severe liver dysfunction.

Eligibility is conditional for certain groups, requiring close supervision and caution: This includes patients with a current or previous history of psychiatric disorders (e.g., anxiety, depression, manic-depressive illness) and those with existing cardiovascular conditions (e.g., hypertension or heart disease). Caution is also advised for older adults (geriatric patients), who may be more sensitive to the drug’s effects.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

Nabilone's interaction profile is defined by two primary regulatory constraints: the potential for enhanced central nervous system (CNS) effects and the modification of drug clearance. Officially documented interaction patterns involve both drug-drug and drug-substance combinations, based on authoritative government regulatory sources.


Official Interaction Statements

Co-administration with CNS depressants is restricted due to the documented additive depressive effects on central nervous system function. This includes Alcohol, Barbiturates, and Narcotic Analgesics. The strong recommendation is that Nabilone should not be taken with alcohol.

Interaction Type Interacting Categories / Substances Official Outcome Description
Pharmacodynamic CNS Depressants, Alcohol Additive CNS depressive effects (e.g., increased sedation)
Pharmacodynamic Sympathomimetic or Anticholinergic Agents Additive cardiovascular effects (e.g., tachycardia, hypertension)
Pharmacokinetic Highly Protein-Bound Drugs (e.g., Antipyrine) Potential for decreased clearance or displacement

Population-Specific Interaction Constraints

Use is not recommended for patients with severe liver dysfunction due to Nabilone's primary biliary excretion, which can alter drug handling and exposure. Additionally, elderly patients require caution due to increased sensitivity to psychoactive effects and a heightened risk of postural hypotension.

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Mechanism of Action

The physiological action of Nabilone is achieved by centrally modulating key signal pathways within the brainstem.


Central Cannabinoid Receptor Agonism

The primary mechanism involves Nabilone acting as an agonist (activator) at the Cannabinoid 1 ( CB1) receptor, which is concentrated in the Central Nervous System (CNS) areas that process the emetic reflex, such as the Chemoreceptor Trigger Zone (CTZ). This agonism initiates an inhibitory G-protein-coupled signaling cascade, which influences the body’s endogenous mechanisms to modulate neural activity.


Presynaptic Signal Dampening

Activation of the CB1 receptor triggers retrograde signaling that results in the inhibition of neurotransmitter release from presynaptic neurons. By reducing the flow of excitatory chemical messengers—like serotonin and dopamine—into the synapse, Nabilone alters the propagation of signals toward the brain's Vomiting Center. This mechanism alters the dynamics of central signaling pathways involved in the emetic response.

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Dosage and Administration Information

How to Use Nabilone 1mg Capsules: Official Administration Guidelines

Nabilone is an oral medication supplied as a capsule, available in 0.25 mg, 0.5 mg, and 1 mg strengths to facilitate careful dosing. The official administration protocol is strictly linked to the patient's chemotherapy schedule and is not intended for as-needed (PRN) use.

Standard Adult Dosing and Schedule

The typical adult starting dose is 1 mg or 2 mg per dose, administered in divided doses, generally two or three times daily (bid or tid).

The maximum recommended daily dose is 6 mg, given in divided doses. Dosing generally begins at the lower end of the range and may be gradually increased based on the patient's response.

Timing and Course Duration

Administration Event Official Instruction
First Dose Timing Administer 1 to 3 hours before the start of the chemotherapeutic agent
Ongoing Frequency Continue scheduled dosing throughout each cycle of chemotherapy
Post-Chemotherapy Continue for up to 48 hours after the last dose of chemotherapy
Meals Relationship Can be taken with or without food

Population and Procedural Rules

For older adults, dosage selection is typically approached with caution, usually initiating at the lower end of the recommended dosage range. Use in pediatric patients (under 18) is generally not recommended as safety and efficacy have not been established.

If a dose is missed, it is generally advised not to take a double dose; instead, the patient should resume the regular dosing schedule. Furthermore, due to its effects, the medication is intended for use under conditions that permit close supervision, especially during initial use and dose adjustments.

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Recent Clinical Evidence

Research evidence / Overview of studies for Nabilone 1mg Capsules

Evidence for Managing Severe Nausea and Vomiting (Refractory CINV)

The evidence base for Nabilone 1mg Capsules primarily consists of randomized controlled trials (RCTs) and systematic reviews. Research was studied for cancer patients receiving chemotherapy whose symptoms were refractory (failed to achieve adequate relief) to prior conventional antiemetic treatments. Studies focused on outcomes describing episodic or acute changes in symptoms, such as complete control outcomes for vomiting and nausea. Findings describe patterns observed in these studies, including patient preference for this agent compared to a specific study control.

Comparing Research Against Prior Standard Treatments

Initial research involved studies where Nabilone was evaluated in comparison to either a placebo or certain anti-sickness medicines that were standard treatment decades ago. However, comparative evidence is limited against the antiemetic regimens currently used as standard care, such as 5-HT3 and NK1 receptor antagonists. The research does not determine the relationship between this agent and these widely used medications, representing a recognized research gap.

Long-term Studies and Follow-up Durations

Studies exploring this use are focused predominantly on the acute phase immediately following treatment. The follow-up durations were limited, typically ranging from 24 hours up to about five days. Consequently, the persistence of any observed symptom changes over extended time periods is not fully established. Research regarding long-term use is still emerging.

Evidence in Special Patient Groups

The majority of available research was conducted in adults with cancer. Limited data exists for other groups, though research has explored the use of this agent in some pediatric patients undergoing chemotherapy. For other special populations, such as older adults, evidence quality varies across studies, and data remain insufficient.

Key Uncertainties and Research Gaps

Scientific reviews highlight limitations such as the reliance on many older RCTs with modest sample sizes, meaning the results apply only to the specific populations studied. The most substantial gap remains the lack of trials comparing Nabilone to the contemporary antiemetic therapies, leaving comparative evidence lacking in modern clinical scenarios.

Key Studies & References

  1. Cannabinoids for control of chemotherapy induced nausea and vomiting: quantitative systematic review
  2. Nabilone for the Treatment of Nausea and Vomiting or Anorexia: A Review of Clinical Effectiveness and Guidelines
  3. Nausea and Vomiting Related to Cancer Treatment (PDQ®)–Health Professional Version
  4. Efficacy of cannabinoids for the prophylaxis of chemotherapy-induced nausea and vomiting—a systematic review and meta-analysis
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Frequently Asked Questions (FAQ)

Common questions about Nabilone 1mg Capsules (FAQ)

Q: Can Nabilone be taken long-term?

A: Official product information indicates that Nabilone is intended for use in connection with chemotherapy cycles. Prescriptions are generally limited to the amount needed for a single cycle, which often means continuing use for up to 48 hours after the final dose of chemotherapy. It is not approved or recommended for general long-term use outside of this specific context.

Q: Is Nabilone used for treating chronic pain?

A: Regulatory documents state that the only official use for this medication is to help control persistent, severe nausea and vomiting associated with cancer chemotherapy. This agent is typically used only when patients have not achieved adequate relief from conventional antiemetic treatments.

Q: What is Nabilone's legal classification in the US and Canada?

A: In the United States, Nabilone is officially classified as a Schedule II controlled substance by the Drug Enforcement Administration (DEA). This legal classification indicates its accepted medical use alongside regulatory controls due to its potential for abuse.

Q: How long does it typically take for Nabilone to start working?

A: The medication is designed to have an effect on the central nervous system within a few hours of being taken. Data suggests that the concentration of the drug in the bloodstream generally reaches its peak approximately two hours after oral administration.

Q: How long do the effects of one Nabilone capsule last?

A: The effects may persist for a variable and unpredictable period. This is related to the presence of active metabolites (breakdown products) in the body, one of which has a terminal elimination half-life that can exceed 35 hours.

Q: Does Nabilone interact with over-the-counter pain relievers?

A: Official guidance advises caution when Nabilone is taken alongside any medication that is highly protein-bound, due to the potential for altered drug handling. Specific non-prescription pain relievers are not explicitly detailed in the interactions list provided in the drug label.

Q: Is there a risk of becoming dependent on Nabilone?

A: Regulatory documents state that this medication is an abusable substance and carries the potential to cause psychological dependence. Official guidance states that professional monitoring for signs of excessive use or abuse is warranted.

Q: What happens if Nabilone is taken with certain antidepressants?

A: Nabilone is officially restricted for use with medications that have an additive depressive effect on the central nervous system (CNS). Caution is advised for co-administration with any medication that affects the CNS, including certain types of antidepressants.

Q: Does Nabilone show up on standard drug tests?

A: Official product information indicates that the body eliminates Nabilone and its breakdown products in a manner similar to other cannabinoids. Because the metabolites can remain in the body for an extended time, these compounds may be detectable in bodily waste for a prolonged period after use.

Q: Is Nabilone considered a narcotic?

A: Nabilone is officially classified as a synthetic cannabinoid and is scheduled under controlled substance regulations. It is not, however, classified as a narcotic.

Q: What is the difference between Nabilone and dronabinol?

A: Nabilone is described as a synthetic analogue of THC, the main psychoactive component in cannabis. Dronabinol, by contrast, is a synthetic form of Delta^9-tetrahydrocannabinol itself. Regulatory documents indicate differences in their chemical structure, controlled substance schedules, and how the body processes them (pharmacokinetic profiles).

Q: Can Nabilone cause stomach upset or nausea?

A: While the drug's primary purpose is to control severe nausea and vomiting, official safety documents list nausea, decreased appetite, and abdominal pain among the possible, though less frequent, adverse reactions reported.

Q: Is it safe to suddenly stop taking Nabilone?

A: Official information indicates that any discontinuation of the medication may require professional guidance to help avoid withdrawal symptoms, especially if it has been used for a long time. This process may sometimes involve a slow decrease in dose.

Q: Does Nabilone interact with medications for anxiety?

A: Regulatory documents indicate that caution is necessary when taking Nabilone with other central nervous system (CNS) depressants, which includes certain types of medicine prescribed to manage anxiety.

Q: Is Nabilone known to cause weight changes?

A: Official safety documents list decreased appetite as a reported adverse event. Weight changes are not listed as a common or very common side effect in the official regulatory profile of the drug.

Q: Is there a risk of seizures with Nabilone use?

A: Official consumer information states that seizures (convulsions) are a potentially serious, though uncommon, adverse effect. This type of event warrants prompt medical evaluation.

Q: What does official research say about Nabilone's role in palliative care?

A: While the official use of Nabilone is limited to chemotherapy-induced nausea and vomiting (CINV), studies have explored its potential role in palliative medicine. However, current evidence remains limited regarding its effectiveness for common palliative symptoms, such as cancer-related anorexia or cachexia.

Q: Is Nabilone available in generic form?

A: Nabilone is the active ingredient in a brand-name pharmaceutical product approved by regulatory bodies. Information regarding the availability and regulatory status of generic versions may vary based on market and time.

Q: What happens if someone accidentally takes too much Nabilone?

A: Signs of overdose may include severe psychotic episodes, such as hallucinations, intense anxiety reactions, and may progress to respiratory depression or coma. Official documents advise seeking prompt medical attention if an overdose is suspected.

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How should Nabilone 1mg Capsules be stored and disposed of?

Storage and Disposal of Nabilone 1mg Capsules

Nabilone capsules must be stored according to regulatory requirements to ensure product stability and safety.

Requirement Official Condition
Temperature Store at room temperature, typically 15 C to 30 C (59 F to 86 F). Keep from freezing and excess heat
Protection Protect from moisture and direct light. Keep the container tightly closed
Security Keep out of the sight and reach of children and store in a safe place due to controlled substance regulations

The medication must remain in the original container. When disposing of expired or unused Nabilone, do not throw it away in household waste or flush it down the toilet (wastewater). Disposal must follow local regulations for pharmaceutical waste handling, often requiring return to a pharmacy or a designated take-back program.

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

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