Rationale

Confusion over the words intoxicating, impairment, psychotropic, psychoactive, and their synonyms is now a material barrier to consistent cannabis policy, enforcement and product-safety standards. For example, “Intoxication” in ICD-10 (the International Classification of Diseases 10th edition, a medical classification list by the World Health Organization), denotes a transient clinical state after recent use of a psychoactive substance, characterised by disturbances in consciousness, cognition, perception or behavior. By contrast, “impairment” is a measurable decrement in task performance—the metric used by road-safety agencies such as the National Highway Transportation Safety Agency (NHTSA). As it pertains to the cannabis plant and its derivatives, psychotropic is a treaty term under the 1971 UN Convention (Article 1 (e)). It covers only substances listed in Schedules I–IV and is also widely used by clinicians for prescription CNS (central nervous system) medicines, creating cross-sector ambiguity. “Psychoactive,” while scientifically precise (“affects mental processes”), includes commonly consumed agents such as caffeine and does not highlight safety risk. These linguistic overlaps now impede: Regulators – drafting potency caps, age gates and impaired-driving rules; Medical professionals – counselling patients on therapeutic versus euphorigenic effects; Operators – labelling products consistently across jurisdictions; Consumers – understanding functional risk. This task-group, established during June 2025’s Committee Week in Toronto has prepared this proposed harmonised set of words for the Terminology Standard D8270. Our goal is to establish clear, source-referenced definitions which aim to reduce regulatory fragmentation, support science-based product classification (e.g., CBD ? non-intoxicating), and provide a common language for global trade and public-health dialogue. All terms are grounded in primary sources (ICD-10, UN conventions, NHTSA, WHO lexicons).