Intoxicating vs Nonintoxicating Claims: What the Evidence Says

Three words that get mixed up

Product labels often say a cannabinoid is "non-psychoactive." Researchers use words more carefully, and so does this page.

• Psychoactive means a substance acts on the brain or nervous system in a way that can change how a person feels, thinks or functions. This includes everyday drugs and many medicines.
• Intoxicating means producing a "high" or similar altered state. NIDA describes delta-9 THC as intoxicating, meaning it can temporarily alter mood, thoughts and perceptions. [1]
• Impairing means measurably worse performance on tasks such as driving, memory or reaction time.

These are our plain-language working definitions, and sources do not always use the terms the same way. A compound can be psychoactive without being intoxicating like THC, and a product can impair someone without being labeled intoxicating.

Evidence labels used here: approved medicine (a regulator has approved a specific drug), established, promising but limited, mixed, insufficient evidence, no good evidence of benefit, and evidence of harm. "Proper evidence not found" means we looked and found nothing usable.

What the evidence says, compound by compound

CBD: not a THC-style high, but not effect-free

Several lines of evidence agree that CBD does not produce a THC-like high.

• In a study of 31 frequent cannabis users, oral CBD at 200, 400 and 800 mg (study amounts, not recommendations) was placebo-like on abuse-related measures, while smoked cannabis produced a high. [6]
• The FDA-approved CBD medicine's label reports that in a human abuse potential study, responses on liking measures stayed within the placebo range, unlike dronabinol and alprazolam. [7]
• The WHO expert committee review concluded that in humans CBD exhibits no effects indicative of abuse or dependence potential. [8]
• In an on-road driving trial, CBD-dominant vaporized cannabis did not increase lane weaving compared with placebo. [2] A 2025 simulator study of vaporized CBD found no significant change in overall driving score, though motion detection was reduced. [9]

CBD still has effects. NIDA lists drowsiness, decreased appetite, vomiting and diarrhea. [1] The medicine label lists somnolence and sedation and advises patients not to drive or operate machinery until they know how it affects them. [7] NCCIH says CBD may produce psychotic effects or cognitive impairment in people who also regularly use THC. [10] A small pilot simulator trial of 300 mg oral CBD found no statistically significant driving differences but was underpowered, so the question stays open. [11] A review of cannabis and driving calls the evidence on CBD's role inconclusive. [12]

Mixed products can blur the picture

In a within-person lab study, a hemp-derived oral product containing both CBD and THC (plus their acid forms) produced subjective intoxication and impaired working memory at the highest study amount, even though its THC content was relatively low. [13] That result cannot be assigned to CBD alone. Products labeled CBD have also been found to contain THC. [1]

Newer compounds

HHC is a laboratory-made (semisynthetic) compound. A review reports that preclinical studies indicate (9R)-HHC has THC-like properties and that its human pharmacology is yet to be investigated. [14] A hospital case report described severe sedation, low blood pressure and abnormal heart rhythm after a man ingested HHC and HHC-P mixed in food. [15] Case reports show harm can occur but cannot show how common it is. See HHC and Natural, Semisynthetic and Synthetic Cannabinoids.

What this means in practice

"Non-intoxicating" is a statement about a high, not about safety. If a product contains more than one cannabinoid, or its contents are unverified, the label alone cannot tell you how it will affect you. For driving, see Cannabis Impairment and Driving. For the full compound comparison, see CBD vs THC.

Safety note

FDA says that if you think you are having a serious side effect that is an immediate danger to your health, call 9-1-1 or go to your local emergency room. [5] FDA also asks that suspected accidental ingestion by a child be evaluated in a physician's office or emergency department. [16]