Marinol (Dronabinol) at a glance: schedule, half-life, and class
- Generic name
- Dronabinol (synthetic delta-9-THC)
- Brand names
- Marinol (capsules), Syndros (oral solution)
- Drug class
- Cannabinoid
- US legal status
- Capsules Schedule III; oral solution Schedule II
- Approved uses
- Chemotherapy nausea and vomiting; AIDS-related anorexia with weight loss
- Forms
- Capsules in sesame oil; oral solution
- Onset
- 30 minutes to 1 hour
- Duration
- 4 to 6 hours (appetite effect up to 24 hours)
- Half-life
- 25 to 36 hours (terminal)
- Drug tests
- Positive for THC
Marinol uses: what dronabinol is prescribed for
Dronabinol is approved for nausea and vomiting from cancer chemotherapy in people who have not responded to standard anti-nausea medicines, and for appetite loss with weight loss in people with AIDS.[1]
It is chemically identical to the delta-9-THC in cannabis, but in measured doses without the other compounds in the plant. Nabilone (Cesamet) is a related synthetic cannabinoid.
Marinol dosage: how dronabinol is usually prescribed
The figures below come from the FDA-approved label and describe how prescribers typically use dronabinol. They are not personal dosing advice. A prescriber sets the dose for each person and adjusts it over time.[1]
| Use | Typical adult dose | Label guidance |
|---|---|---|
| Chemotherapy nausea (capsules) | 5 mg/m² 1 to 3 hours before chemotherapy, then every 2 to 4 hours | 4 to 6 doses a day; maximum 15 mg/m² per dose |
| AIDS anorexia (capsules) | 2.5 mg twice a day, before lunch and dinner | Maximum 20 mg a day |
| Older adults | 2.5 mg once a day before dinner or at bedtime | Higher risk of dizziness and falls |
Marinol (dronabinol) side effects and risks
Common side effects include feeling high, dizziness, drowsiness, confusion, abnormal thinking, paranoia, nausea, and abdominal pain.[1]
Serious risks include psychiatric reactions (mania, psychosis, worsened depression), fainting and fast heartbeat, seizures, and falls in older adults. Syndros contains alcohol and propylene glycol.[1]
Marinol interactions: what not to mix with dronabinol
Choose what it would be combined with:
| Combined with | What happens | Label guidance |
|---|---|---|
| Alcohol, sedatives, opioids | Additive drowsiness and impairment | Use caution |
| Disulfiram, metronidazole (with Syndros) | Reaction to the alcohol in the solution | Contraindicated |
| Warfarin | May raise warfarin effect | Monitor INR |
| Stimulants and anticholinergic drugs | Fast heartbeat, high blood pressure | Use caution |
This is not a full list. A pharmacist can check a complete medication list, including supplements and over-the-counter products.[1]
What happens if someone takes too much dronabinol?
Too much dronabinol causes strong intoxication, anxiety or panic, paranoia, confusion, fast heartbeat, dizziness on standing, and drowsiness. Fatal overdose from THC alone is very rare, but children are at higher risk.[1]
If someone has taken too much
- Call 911 for chest pain, a seizure, trouble breathing, unresponsiveness, or if a child may have eaten a cannabis product.
- For an adult who is awake but anxious or sick, move them to a calm place and stay with them. Symptoms usually ease over several hours.
- Call Poison Help at 1-800-222-1222 for advice, including for any child or pet exposure.
- Do not drive. Edibles can keep building for hours after they are eaten.
Marinol withdrawal timeline: how long dronabinol withdrawal lasts
Stopping dronabinol after regular high-dose use can cause mild withdrawal, similar to cannabis withdrawal.[1]
- Days 1 to 3Symptoms beginIrritability, trouble sleeping, restlessness.
- Days 3 to 7PeakVivid dreams, low appetite, anxiety, sweating.
- 1 to 2 weeksResolvesSleep and mood return to normal.
How to get prescribed Marinol (dronabinol) legally in the US
In the United States, dronabinol is a Schedule III controlled substance. The only legal way to get it is with a prescription from a clinician registered with the Drug Enforcement Administration (DEA), filled by a licensed pharmacy. Depending on state law, that can be a physician, nurse practitioner, or physician assistant.[2]
- Refills: a Schedule III prescription can be refilled up to five times within six months of the date it was written. After that, a new prescription is needed.[3]
- Telehealth: federal flexibilities let DEA-registered clinicians prescribe Schedule II to V medicines after a telemedicine visit, without a prior in-person exam, through December 31, 2026. A permanent DEA rule was under final review in late 2026. State rules can be stricter.[4]
- Monitoring: prescribers and pharmacists in most states check a prescription drug monitoring program, a database of controlled-substance prescriptions, before prescribing or dispensing.
- Pharmacies: a legitimate pharmacy always requires a valid prescription, has a licensed pharmacist available, and is licensed in the state it ships to. The FDA's BeSafeRx tool and the NABP's safe pharmacy list help confirm a pharmacy is real.[5][6]
- Cost: generic dronabinol capsules are available; insurers usually require a qualifying diagnosis.
- Drug tests: dronabinol causes a positive test for THC. Employers and courts may require documentation of the prescription.
Traveling: keep the medicine in its original pharmacy container and carry a copy of the prescription. Check the rules of the destination country before travel, because many countries restrict controlled medicines or require a permit.
Can you order Marinol (dronabinol) online legally?
Yes, but only with a valid prescription and only from a pharmacy licensed in your state. Many licensed pharmacies, including mail-order pharmacies run by insurers, fill dronabinol prescriptions online and ship them. Buying dronabinol from a website that does not require a prescription is illegal, and the product is often fake.[5][7]
- See a licensed clinicianA clinician evaluates you in person or by telemedicine and decides whether dronabinol is appropriate.
- The prescription goes to a pharmacyPrescriptions for controlled medicines are usually sent electronically, straight from the prescriber to the pharmacy you choose.
- The pharmacy checks and fills itA pharmacist verifies the prescription and your identity, then dispenses the medicine in person or by mail.
Signs that an online seller is illegal:
- It sells dronabinol with no prescription, or after only a short online questionnaire.
- It takes orders through social media, messaging apps, or email.
- It asks for payment in cryptocurrency, gift cards, or money transfers.
- It has no US street address, no state pharmacy license, and no pharmacist to speak to.
- Its prices are far below those of ordinary pharmacies, or it ships from another country.
The FDA's BeSafeRx tool links to each state's license lookup, and the National Association of Boards of Pharmacy lists verified online pharmacies.[5][6]
Marinol price: how much does Marinol (dronabinol) cost without insurance?
Generic dronabinol capsules are available; insurers usually require a qualifying diagnosis.
What you pay depends on the strength, the number of doses, your insurance plan, and the pharmacy. Cash prices for the same prescription can differ several times over between pharmacies in the same town, so check current prices before you fill it.
Ways to pay less, legally:
- Ask the prescriber whether a generic dronabinol is available. FDA-approved generics work the same way as the brand and usually cost much less.
- Compare cash prices between pharmacies before you fill the prescription.
- Use a free prescription discount card, such as GoodRx or SingleCare, when you pay cash. These cards cannot be combined with insurance on the same fill.
- For brand-name medicines, check the manufacturer's savings program or patient assistance program.
- Ask about a 90-day supply or your insurer's mail-order pharmacy, which often lowers the cost per dose when your prescriber agrees it is appropriate.
Warning: A price far below what licensed pharmacies charge, especially with no prescription required, is a strong sign of an illegal seller and counterfeit medicine.[5]
Is Marinol legal? Dronabinol legal status in other countries
| Country | Status |
|---|---|
| United Kingdom | Not licensed; nabilone and Sativex used instead |
| Canada | Prescription medicine (nabilone more common) |
| Australia | Schedule 8 controlled drug |
| International | Schedule II of the 1971 Convention on Psychotropic Substances |
Laws change and differ in detail. Check current rules before carrying any controlled medicine across a border.[8]
Common questions about Marinol (dronabinol)
Is Marinol (dronabinol) the same as marijuana?
It is synthetic THC, the main active compound in cannabis, but it is an FDA-approved medicine with measured doses.
Will Marinol (dronabinol) make me fail a drug test?
Yes. It is THC, so tests for cannabis will be positive. Keep documentation of your prescription.
Does Marinol (dronabinol) get you high?
It can, especially at higher doses. Many people feel mild euphoria, dizziness, or drowsiness.
Why are Marinol and Syndros in different schedules?
Marinol capsules were moved to Schedule III in 1999. Syndros, a liquid approved in 2016, was placed in Schedule II.
Can you buy Marinol (dronabinol) without a prescription?
No. Marinol (dronabinol) is a Schedule III controlled substance in the US, so it is illegal to buy or possess it without a valid prescription. Websites and social media sellers that offer it without one are not legal pharmacies, and the FDA warns that products sold this way are often counterfeit, contaminated, or the wrong strength. The legal route is a visit with a licensed clinician, in person or by telehealth, and a prescription filled at a state-licensed pharmacy. The FDA's BeSafeRx tool and the NABP's safe pharmacy list help confirm an online pharmacy is real.
Sources
- Marinol (dronabinol) prescribing information. DailyMed, US National Library of Medicine.
- Controlled Substance Schedules. DEA Diversion Control Division.
- 21 CFR 1306.22, Refilling of prescriptions (Schedules III and IV). Electronic Code of Federal Regulations.
- Prescribing controlled substances via telehealth. US Department of Health and Human Services.
- BeSafeRx: Your Source for Online Pharmacy Information. US Food and Drug Administration.
- Safe Pharmacy. National Association of Boards of Pharmacy.
- One Pill Can Kill. US Drug Enforcement Administration.
- International drug control conventions. United Nations Office on Drugs and Crime.
