Nabilone

Nabilone is basically pharmaceutical THC done right; a clean, standardized capsule instead of guessing your dose from a plant. For chemo nausea it is a genuinely useful tool when the usual antiemetics stall out, and that is exactly the niche it earned FDA approval in. What stands out is how much mileage it gets off-label; the PTSD nightmare data out of the Canadian military is hands down some of the more convincing cannabinoid work in the literature, and there are solid signals for fibromyalgia pain and even agitation in dementia. It is essentially a one-molecule Swiss army knife that can consolidate several messier meds. Just respect it; it is sedating and psychoactive, it is Schedule II for a reason, and it deserves a careful hand rather than a casual one. Used thoughtfully it is a pretty impressive little compound.

Nabilone is generally well tolerated at antiemetic doses but is reliably sedating and psychoactive; dizziness, drowsiness, dry mouth, euphoria/dysphoria, orthostatic hypotension and tachycardia are common. In elderly and dementia patients, sedation and cognitive slowing are the main concerns, and one Alzheimer's trial found cognition on a severe-impairment battery favored placebo even as agitation improved on nabilone. Evidence for chronic non-cancer pain is genuinely mixed; a Cochrane review found no convincing high-quality evidence that nabilone helps fibromyalgia and noted low tolerability in that population. It is a Schedule II controlled substance in the US with real (if low) abuse potential, should be avoided with alcohol, sedatives and in those with a history of psychosis, and is not risk-free.

Nabilone is a synthetic cannabinoid, and its interactions are mostly additive pharmacodynamics rather than metabolic. Combining it with alcohol, benzodiazepines, opioids, barbiturates or sedating antihistamines produces additive central depression; psychomotor function was particularly impaired with concurrent diazepam, and the sedation, dizziness and confusion nabilone already causes get worse in older patients.

Anticholinergics such as tricyclic antidepressants, antihistamines and antimuscarinic bladder agents add to nabilone's own tachycardia and drowsiness. Sympathomimetics, including amphetamines and cocaine, push the same cardiovascular direction harder and can produce additive hypertension, tachycardia and cardiotoxicity. Orthostatic hypotension is common with nabilone alone and compounds with antihypertensives.

Nabilone is highly protein bound, so displacement of other tightly bound drugs is plausible in theory, though it has not been shown to matter clinically. The psychiatric overlap deserves attention as well; nabilone can precipitate disorientation and psychotic reactions, and that risk sits higher alongside other psychoactive agents.

Checking a whole stack? Run it through interactions + stacks.