Dronabinol 10mg Capsules

Manufacturer ASCEND LABORATORIES Active Ingredient Dronabinol Capsules(droe NAB i nol) Pronunciation droe NAB i nol
It is used to help you eat more.It is used to treat upset stomach and throwing up.
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Drug Class
Antiemetic, Appetite Stimulant
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Pharmacologic Class
Cannabinoid
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Pregnancy Category
Category C
FDA Approved
May 1985
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DEA Schedule
Schedule III

Overview

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What is this medicine?

Dronabinol is a man-made form of a substance found in marijuana. It is used to help prevent nausea and vomiting caused by cancer chemotherapy, and to help people with AIDS gain weight by increasing their appetite.
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How to Use This Medicine

Taking Your Medication Correctly

To get the most benefit from your medication, it's essential to use it as directed by your doctor. Carefully read all the information provided with your medication and follow the instructions closely.

If you're taking this medication to increase your appetite, take it 1 hour before lunch and dinner, or as instructed by your doctor.
If you're using this medication to treat nausea and vomiting, follow your doctor's guidance on whether to take it with or without food.

Storing and Disposing of Your Medication

To maintain the effectiveness and safety of your medication:
Store it in a cool place, below 59°F (15°C), or in a refrigerator. Do not freeze.
Keep the lid tightly closed to protect the medication from moisture.
* Store it in a dry place, avoiding bathrooms and areas with high humidity.

What to Do If You Miss a Dose

If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for the missed one.
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Lifestyle & Tips

  • Avoid driving or operating heavy machinery until you know how this medication affects you, as it can cause dizziness, drowsiness, and impaired judgment.
  • Avoid alcohol and other CNS depressants (e.g., sedatives, tranquilizers) while taking dronabinol, as this can increase drowsiness and other side effects.
  • Rise slowly from a sitting or lying position to prevent dizziness or fainting (orthostatic hypotension).
  • Store capsules in the refrigerator (2-8°C or 36-46°F). Do not freeze. If stored at room temperature, they are stable for a limited time (e.g., 28 days for Marinol).
  • Do not share this medication with others, as it is a controlled substance.
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: Varies by indication
Dose Range: 2.5 - 20 mg

Condition-Specific Dosing:

Chemotherapy-Induced Nausea and Vomiting (CINV): Initial: 5 mg/m² orally 1-3 hours before chemotherapy, then every 2-4 hours after chemotherapy for a total of 4-6 doses/day. Max: 15 mg/m²/dose.
AIDS-related Anorexia with Weight Loss: Initial: 2.5 mg orally twice daily, 1 hour before lunch and 1 hour before dinner. Max: 20 mg/day.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not established (Safety and efficacy not established in pediatric patients <18 years of age for CINV or anorexia.)
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Dose Adjustments

Renal Impairment:

Mild: No specific adjustment, use with caution.
Moderate: No specific adjustment, use with caution.
Severe: No specific adjustment, use with caution. Monitor for increased adverse effects.
Dialysis: Not available (Dronabinol is highly protein bound and extensively metabolized, unlikely to be removed by dialysis.)

Hepatic Impairment:

Mild: Use with caution, consider lower starting doses and slower titration.
Moderate: Use with caution, consider lower starting doses and slower titration.
Severe: Use with caution, consider lower starting doses and slower titration. Monitor closely for CNS and cardiovascular effects.

Pharmacology

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Mechanism of Action

Dronabinol is a synthetic delta-9-tetrahydrocannabinol (THC), the primary psychoactive component of Cannabis sativa. It is an agonist at cannabinoid receptors (CB1 and CB2) in the central nervous system and peripheral tissues. Its antiemetic effects are thought to be mediated through inhibition of the vomiting center in the medulla oblongata. Its appetite-stimulant effects are believed to be mediated through effects on the hypothalamus.
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Pharmacokinetics

Absorption:

Bioavailability: 10-20% (highly variable due to extensive first-pass metabolism)
Tmax: 2-4 hours
FoodEffect: Increased absorption with a high-fat meal, leading to higher peak plasma concentrations and AUC.

Distribution:

Vd: Approximately 10 L/kg
ProteinBinding: >97% (primarily to albumin and lipoprotein)
CnssPenetration: Yes (readily crosses the blood-brain barrier)

Elimination:

HalfLife: 25-36 hours (parent drug); 4-5 days (active metabolites)
Clearance: Not readily available (high variability)
ExcretionRoute: Fecal (50-65%), Renal (10-15%)
Unchanged: <1%
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Pharmacodynamics

OnsetOfAction: 0.5-1 hour (oral)
PeakEffect: 2-4 hours (psychoactive effects)
DurationOfAction: 4-6 hours (psychoactive effects); up to 24 hours or longer (appetite stimulation)

Safety & Warnings

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Side Effects

Serious Side Effects: Seek Medical Help Immediately

Although rare, this medication can cause severe and potentially life-threatening side effects. If you experience any of the following symptoms, contact your doctor or seek medical attention right away:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of high or low blood pressure, including:
+ Severe headache or dizziness
+ Passing out
+ Changes in eyesight
New or worsening mental, mood, or behavior changes
Hallucinations (seeing or hearing things that are not there)
Rapid heartbeat
Memory problems or loss
Difficulty focusing
Changes in balance
Feeling confused
Seizures
Stomach pain, upset stomach, or vomiting that is new or worsening
Mouth sores
Burning sensation
Flushing

Other Possible Side Effects

Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it's essential to discuss any concerns with your doctor. If you experience any of the following side effects or any other symptoms that bother you or do not go away, contact your doctor:

Dizziness
Drowsiness
* Feeling euphoric (easy laughing and feeling good)

This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, consult your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Severe dizziness or lightheadedness
  • Fainting
  • Fast or pounding heartbeat
  • Confusion or disorientation
  • Hallucinations (seeing or hearing things that are not real)
  • Unusual changes in mood or behavior (e.g., extreme euphoria, paranoia, depression)
  • Seizures
  • Severe stomach pain with nausea and vomiting (Cannabinoid Hyperemesis Syndrome, rare with therapeutic doses but possible with chronic high use)
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following conditions to ensure safe treatment:

Any allergies, especially to sesame oil, this medication, or any of its components. Describe your allergic reactions and symptoms.
A history of alcohol or drug use disorder.
Previous mental health or behavioral issues.
Current medications, including prescription and over-the-counter (OTC) drugs, natural products, and vitamins, as some may interact with this medication. Specifically, avoid taking certain cough or cold remedies, diet pills, medications for mental or mood problems, or stimulants like amphetamine, as they may interact with this drug.
Pregnancy or potential pregnancy, as this medication should not be taken during pregnancy.
Breastfeeding or plans to breastfeed, as you may need to avoid breastfeeding. If your doctor advises that you can breastfeed, your baby will require regular weight checks.

This is not an exhaustive list of all potential interactions. Therefore, it is crucial to discuss all your medications and health conditions with your doctor and pharmacist to ensure safe treatment. Do not start, stop, or change the dose of any medication without consulting your doctor.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

When starting this medication, be cautious when driving or engaging in activities that require alertness, as it may affect your ability to perform these tasks safely. To minimize the risk of dizziness or fainting, get up slowly from a sitting or lying down position, and exercise caution when climbing stairs.

Be aware that this medication can cause changes in blood pressure, which may increase the risk of falls. This risk is particularly higher in older adults and individuals with pre-existing heart conditions. Your doctor will monitor your blood pressure and heart rate; follow their instructions for checking these vital signs.

Avoid consuming alcohol while taking this medication, as it may interact with the drug. Additionally, refrain from smoking or using other forms of cannabis (marijuana) during treatment, and consult your doctor before doing so. If you plan to use marijuana, other cannabis products, or prescription/over-the-counter medications that may cause drowsiness, discuss this with your doctor beforehand.

If you regularly consume grapefruit juice or eat grapefruit, inform your doctor, as this may interact with the medication.

When initiating treatment with this medication, be aware that it may cause mood changes. Ensure you have a trusted individual who can provide support if needed. Long-term use of this medication can lead to dependence, and sudden cessation may result in withdrawal symptoms. If you experience any adverse effects, notify your doctor promptly.

In case of accidental ingestion, seek immediate medical attention. This medication is not approved for use in children; however, your doctor may prescribe it if the benefits outweigh the risks. If your child is taking this medication, consult your doctor about the potential benefits and risks.

If you are 65 years or older, use this medication with caution, as you may be more susceptible to side effects. Furthermore, if you are pregnant or become pregnant while taking this medication, inform your doctor immediately, as it may harm the unborn baby.
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Overdose Information

Overdose Symptoms:

  • Severe drowsiness or stupor
  • Dizziness
  • Confusion
  • Disorientation
  • Slurred speech
  • Tachycardia (fast heart rate)
  • Orthostatic hypotension (low blood pressure upon standing)
  • Panic reactions
  • Hallucinations
  • Psychosis
  • Seizures
  • Coma

What to Do:

Seek immediate medical attention. Call 911 or Poison Control at 1-800-222-1222. Treatment is supportive, including close monitoring of vital signs and CNS status. Activated charcoal may be considered if ingestion is recent and significant.

Drug Interactions

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Major Interactions

  • CNS depressants (e.g., barbiturates, benzodiazepines, opioids, sedating antihistamines, alcohol): Increased risk of CNS depression (drowsiness, dizziness, confusion, respiratory depression).
  • CYP2C9 inhibitors (e.g., amiodarone, fluconazole, fluoxetine, gemfibrozil, sulfamethoxazole): May increase dronabinol exposure and risk of adverse effects.
  • CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, ritonavir, grapefruit juice): May increase dronabinol exposure and risk of adverse effects.
  • CYP2C9 inducers (e.g., rifampin, carbamazepine, phenytoin): May decrease dronabinol exposure and efficacy.
  • CYP3A4 inducers (e.g., rifampin, carbamazepine, phenytoin, St. John's Wort): May decrease dronabinol exposure and efficacy.
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Moderate Interactions

  • Anticholinergics (e.g., atropine, scopolamine): Potential for additive tachycardia.
  • Sympathomimetics (e.g., pseudoephedrine, amphetamines): Potential for additive tachycardia and hypertension.
  • Disulfiram, Metronidazole (with alcohol-containing liquid formulations of dronabinol, not applicable to capsules): Potential for disulfiram-like reaction.

Monitoring

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Baseline Monitoring

Mental status (orientation, mood, cognitive function)

Rationale: To establish baseline for potential CNS adverse effects and assess suitability for treatment.

Timing: Prior to initiation of therapy.

Blood pressure and heart rate

Rationale: Dronabinol can cause orthostatic hypotension and tachycardia.

Timing: Prior to initiation of therapy.

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Routine Monitoring

Mental status (drowsiness, dizziness, confusion, mood changes, hallucinations)

Frequency: Regularly, especially during dose titration and with concomitant CNS depressants.

Target: Not applicable (monitor for changes from baseline)

Action Threshold: Significant changes or severe symptoms warrant dose reduction or discontinuation.

Blood pressure (especially orthostatic) and heart rate

Frequency: Regularly, especially during dose titration.

Target: Not applicable (monitor for significant changes)

Action Threshold: Symptomatic orthostatic hypotension or persistent tachycardia may require dose adjustment.

Appetite and weight (for anorexia indication)

Frequency: Weekly to monthly

Target: Weight gain or stabilization

Action Threshold: Lack of therapeutic response after adequate trial may indicate need for dose adjustment or alternative therapy.

Nausea and vomiting frequency/severity (for CINV indication)

Frequency: During chemotherapy cycles

Target: Reduction in symptoms

Action Threshold: Inadequate control may require dose adjustment or combination therapy.

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Symptom Monitoring

  • Dizziness
  • Drowsiness
  • Confusion
  • Mood changes (euphoria, depression, anxiety)
  • Hallucinations
  • Paranoia
  • Orthostatic hypotension
  • Tachycardia
  • Abdominal pain
  • Nausea
  • Vomiting

Special Patient Groups

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Pregnancy

Category C. Use only if the potential benefit justifies the potential risk to the fetus. Dronabinol has shown adverse effects in animal studies. There is a potential for neonatal cannabinoid withdrawal syndrome if used during pregnancy.

Trimester-Specific Risks:

First Trimester: Potential for adverse developmental effects based on animal data; human data limited.
Second Trimester: Potential for adverse developmental effects; human data limited.
Third Trimester: Potential for neonatal cannabinoid withdrawal syndrome (e.g., tremors, irritability, excessive crying, sleep disturbances, feeding difficulties) if used near term.
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Lactation

Not recommended. THC (dronabinol) and its metabolites are excreted into breast milk and can accumulate in the infant. Potential for adverse effects on the infant's development, including neurodevelopmental effects, and potential for sedation.

Infant Risk: L4 (Potentially hazardous)
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Pediatric Use

Safety and efficacy have not been established in pediatric patients (<18 years of age) for either CINV or AIDS-related anorexia. Use is generally not recommended.

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Geriatric Use

Use with caution in elderly patients. They may be more sensitive to the CNS and cardiovascular effects (e.g., dizziness, orthostatic hypotension, confusion) of dronabinol. Start with lower doses and titrate slowly, monitoring closely for adverse effects.

Clinical Information

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Clinical Pearls

  • Dronabinol is a Schedule III controlled substance, indicating a moderate to low potential for physical and psychological dependence.
  • Patients should be warned about the potential for psychoactive effects (e.g., euphoria, dizziness, confusion, hallucinations) and advised to avoid activities requiring mental alertness.
  • Dose titration is crucial to minimize adverse effects and achieve optimal therapeutic response. Start low and go slow.
  • Capsules must be stored in the refrigerator (2-8°C or 36-46°F) to maintain stability. Do not freeze.
  • Monitor for signs of cannabinoid hyperemesis syndrome in patients with chronic, high-dose use, although rare with therapeutic doses.
  • Consider the patient's psychiatric history, as dronabinol can exacerbate mood disorders or psychosis.
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Alternative Therapies

  • For Chemotherapy-Induced Nausea and Vomiting (CINV): 5-HT3 receptor antagonists (e.g., ondansetron, granisetron), NK1 receptor antagonists (e.g., aprepitant, fosaprepitant), corticosteroids (e.g., dexamethasone), dopamine receptor antagonists (e.g., prochlorperazine, metoclopramide).
  • For AIDS-related Anorexia with Weight Loss: Megestrol acetate, mirtazapine, ghrelin mimetics (e.g., anamorelin - not FDA approved for AIDS-related anorexia).
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Cost & Coverage

Average Cost: Varies widely, typically $500-$1500+ per 30 capsules (10mg)
Generic Available: Yes
Insurance Coverage: Tier 2 or Tier 3 (requires prior authorization for some plans)
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General Drug Facts

If your symptoms or health issues persist or worsen, it is essential to contact your doctor promptly. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so it's a good idea to check with your pharmacist for more information. If you have any questions or concerns about this medication, don't hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide details about the medication taken, the amount, and the time it happened.