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Cesamet Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Cesamet (nabilone) is used to treat severe nausea and vomiting that is caused by cancer chemotherapy. This drug is for use only when other medications have been unable to control the nausea and vomiting. It is a man-made form of cannabis (marijuana is an herbal form of cannabis). Common side effects include dizziness, drowsiness, dry mouth, feeling "high", an exaggerated sense of well-being (euphoria), lightheadedness, headache, trouble sleeping, or memory problems.
The usual adult dosage of Cesamet is 1 or 2 mg twice daily. On the day of chemotherapy, the initial dose should be given 1 to 3 hours before the chemotherapy is administered. Cesamet may interact with amphetamines, medicine to treat attention deficit hyperactivity disorder (ADHD), prescription or over-the-counter weight loss aids, antidepressants, barbiturates, sedatives, lithium, theophylline, buspirone, atropine, belladonna, dicyclomine, clidinium, glycopyrrolate, hyoscyamine, mepenzolate, methscopolamine, scopolamine, methantheline, propantheline, or street drugs such as cocaine or Ectasy. Tell your doctor all medications and supplements you use. Cesamet is not recommended for use during pregnancy because of possible fetus/infant harm reported with marijuana exposure (Cesamet is similar to a substance found in marijuana). It is unknown if this drug passes into breast milk. Because other cannabinoids pass into breast milk, breastfeeding while using this drug is not recommended.
Our Cesamet (nabilone) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Cesamet in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using nabilone and call your doctor at once if you have any of these serious side effects:
- hallucinations (seeing or hearing things that are not there);
- paranoia, extreme fear;
- fast heart rate;
- feeling light-headed, fainting; or
- unusual thoughts or behavior.
Continue using nabilone and talk with your doctor if you have any of these less serious side effects:
- dizziness, drowsiness;
- feeling "high";
- weakness, lack of coordination;
- depression, anxiety, confusion;
- dry mouth;
- headache, trouble concentrating; or
- sleep problems (insomnia).
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Cesamet (Nabilone Capsules) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Cesamet Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Some people using this medication do not have serious side effects.
Tell your doctor immediately if any of these serious side effects occur: fainting, mental/mood changes (e.g., depression, anxiety, panic, paranoia, hallucinations, psychosis), unusual weakness, vision changes.
Tell your doctor immediately if any of these rare but very serious side effects occur: fast heartbeat, seizures.
Because nabilone can cause mental, mood, or behavior changes, you should be under the close supervision of a responsible adult or caretaker while you are taking this medication. If you experience any such effects, remain calm and tell your doctor immediately. Do not take any more nabilone until after you consult with your doctor.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Cesamet (Nabilone Capsules)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Cesamet FDA Prescribing Information: Side Effects
Commonly Encountered Reactions: During controlled clinical trials of Cesamet (nabilone capsules) , virtually all patients experienced at least one adverse reaction. The most commonly encountered events were drowsiness, vertigo, dry mouth, euphoria (feeling "high"), ataxia, headache, and concentration difficulties.
Comparative Incidence of Reactions: Accurate estimates of the incidence of adverse events associated with the use of any drug are difficult to obtain. Estimates are influenced by factors such as drug dose, detection technique, setting, and physician judgments, among others. Consequently, the tables presented below are presented solely to indicate the relative frequency of adverse events reported in representative controlled clinical studies conducted to evaluate the safety and efficacy of Cesamet (nabilone capsules) under relatively similar conditions of use. The figures cited cannot be used to predict precisely the incidence of untoward events in the course of usual medical practice, in which patient characteristics and other factors may differ from those that prevailed in the clinical trials. These incidence figures also cannot be compared with those obtained from other clinical studies involving related drug products because each group of drug trials is conducted under a different set of conditions.
Finally, it is important to emphasize that these tabulations do not reflect the relative severity and/or clinical importance of the adverse events. A better perspective on the serious adverse events associated with the use of Cesamet is provided in the WARNINGS and PRECAUTIONS sections.
The following tables list in order of decreasing frequency the adverse reactions encountered by a substantial proportion of patients treated with Cesamet (nabilone capsules) participating in representative controlled clinical trials.
Incidence of Adverse Reactions in Placebo-Controlled Studies
Incidence of Adverse Reactions in Active-Controlled Studies
|Adverse Event|| Nabilone
Adverse Reactions by Body System - The following list of adverse events is organized by decreasing frequency within body systems for patients treated with Cesamet (nabilone capsules) in controlled clinical trials. All events are listed regardless of causality assessment.
Blood and Hematopoietic - Anemia
Eye and Ear - Vision disturbance, ear tightness, eye irritation, eye dryness, equilibrium dysfunction, tinnitus, eye disorder, amblyopia, eye swelling, eyelid diseases, pupil dilation, photophobia, and visual field defect.
Genitourinary - Increased urination, decreased urination, hot flashes, urinary retention, and frequency of micturition.
Infection - Bacterial infection
Metabolic and Endocrine - Thirst
Nervous System - Drowsiness, vertigo, ataxia, decreased concentration, sedation, hallucinations, paresthesia, tremor, memory disturbance, perception disturbance, convulsions, dystonia, numbness, and akathisia.
Psychiatric - Euphoria (feeling "high"), sleep disturbance, depression, confusion, disorientation, anxiety, depersonalization syndrome, speech disorder, abnormal dreams, insomnia, mood swings, inebriated feeling, toxic psychosis, paranoia, apathy, thought disorder, withdrawal, panic disorder, phobic neurosis, emotional disorder, and hyperactivity.
Miscellaneous and Ill-Defined Conditions - Headache, fatigue, lightheadedness, coordination disturbance, asthesia, dysphoria, dizziness, taste change, excessive appetite, chills, excessive sweating, nervousness, malaise, postural dizziness, twitch, irritability, fever, inhibited walking, unconsciousness, hypotonia, and impaired urination.
Postmarketing Adverse Reactions - Cesamet (nabilone capsules) has been marketed internationally since 1982. The following adverse reactions listed in order of decreasing frequency by body system have been reported since Cesamet (nabilone capsules) has been marketed. All events are listed regardless of causality assessment.
Blood and Hematopoietic - Leukopenia
Cardiovascular - Hypotension and tachycardia
Eye and Ear - Visual disturbances
Gastrointestinal - Dry mouth, nausea, vomiting, and constipation
Nervous System - Hallucinations, CNS depression, CNS stimulation, ataxia, stupor, vertigo, convulsion, and circumoral paresthesia
Psychiatric - Somnolence, confusion, euphoria, depression, dysphoria, depersonalization, anxiety, psychosis, and emotional lability
Miscellaneous and Ill-Defined Conditions - Dizziness, headache, insomnia, abnormal thinking, chest pain, lack of effect, and face edema
Drug Abuse And Dependence
Controlled Substance - Cesamet (nabilone capsules) , a synthetic cannabinoid pharmacologically related to Cannabis sativa L. (Marijuana; (delta-9-THC) is a highly abusable substance. Cesamet (nabilone capsules) is controlled under Schedule II (CII) of the Controlled Substances Act. Prescriptions for Cesamet (nabilone capsules) should be limited to the amount necessary for a single cycle of chemotherapy (i.e., a few days). Cesamet (nabilone capsules) may produce subjective side effects which may be interpreted as a euphoria or marijuana-like "high" at therapeutic doses.
It is not known what proportion of individuals exposed chronically to Cesamet (nabilone capsules) or other cannabinoids will develop either psychological or physical dependence. Long term use of these compounds has, however, been associated with disorders of motivation, judgment, and cognition. It is not clear, though, if this is a manifestation of the underlying personalities of chronic users of this class of drugs or if cannabinoids are directly responsible for these effects. An abstinence syndrome has been reported following discontinuation of delta-9-THC at high doses of 200 mg per day for 12 to 16 consecutive days. The acute phase was characterized by psychic distress, insomnia, and signs of autonomic hyperactivity (sweating, rhinorrhea, loose stools, hiccups). A protracted abstinence phase may have occurred in subjects who reported sleep disturbances for several weeks after delta-9-THC discontinuation.
Abuse - Cesamet (nabilone capsules) may produce subjective side effects that may be interpreted as a euphoria or marijuana-like "high" at therapeutic doses. Cesamet (nabilone capsules) was shown to be qualitatively and quantitatively similar to approved oral delta-9-THC in the production of cannabis-like effects, thus demonstrating its potential for abuse.
Preclinical studies performed in both dogs and monkeys demonstrated that Cesamet (nabilone capsules) was cannabinoid-like. As with delta-9-THC, tolerance develops rapidly to the pharmacological effects in both the dog and the monkey. Cross-tolerance between Cesamet (nabilone capsules) and delta-9-THC was demonstrated in the monkey.
Dependence - The physical dependence capacity of Cesamet (nabilone capsules) is unknown at this time. Patients who participated in clinical trials of up to 5 days' duration evidenced no withdrawal symptoms on cessation of dosing.
Read the entire FDA prescribing information for Cesamet (Nabilone Capsules) »
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