Glossary term
THC: THC is the cannabinoid best known for causing intoxication or a “high”. NHS public guidance says it is the chemical in cannabis that makes people high, and also notes that the more THC a product contains, the greater certain risks can be.
Why this term matters
It is one of the most important patient terms in the whole glossary.
UK medical cannabis context
In UK driving law, THC sits within the zero-tolerance-style specified-drug framework, though a medical defence may apply if the medicine is prescribed and taken correctly.
What not to assume
THC content is highly relevant to impairment, psychiatric side effects, dependence risk and driving discussions.
Careful wording: Avoid reassurance such as “medical THC doesn’t make you high”.
Related glossary terms
Related MCPH pages
Sources and review notes
This entry is educational vocabulary, not medical advice. Suitability, prescribing, product choice and monitoring belong with a qualified clinician or pharmacist.