THC
Delta-9-tetrahydrocannabinol

How it occurs

Usually present at much lower levels in raw plant material than its acidic precursor, THCA. Heat can convert THCA into THC through decarboxylation.

Relationship to other cannabinoids

Neutral product of THCA decarboxylation; structurally distinct from CBD and minor cannabinoids.

What is established

THC is intoxicating and acts primarily through cannabinoid receptors, especially CB1. A prescription synthetic form and related cannabinoid medicines have limited approved uses.

Commonly reported effects

Intoxication, altered perception, relaxation, anxiety, appetite change, and impaired coordination are commonly reported; response varies by dose and person.

Anecdotal or marketing-led unless stated otherwise

What remains uncertain

Effects vary substantially by dose, route, product composition, tolerance, and individual biology. Many proposed therapeutic uses remain under study.

Evidence quality

Strong evidence for intoxicating effects; condition-specific evidence varies.

Safety and potential interactions

Can impair judgment, coordination, and driving. May cause anxiety, rapid heart rate, dizziness, or other adverse effects. Keep away from children and pets; avoid combining with alcohol or sedating drugs.

Vaporization relevance

Heating can change cannabinoid form and delivery, but laboratory boiling points do not define a universal device setting. Heater design, sensor position, airflow, material, load, and draw behavior all affect exposure. This entry makes no compound-specific temperature recommendation.

Legal and regulatory context

Legal status differs by product, jurisdiction, age, and source. Retail smoke-shop education is not a statement that this store sells THC.

Dated source foundation

Direct authoritative sources reviewed 2026-08-20. These sources support the safety and regulatory boundaries of this draft; a scientific editor must still verify compound-specific claims against current peer-reviewed literature.

• FDA — Cannabis and cannabis-derived products: questions and answers ↗
• FDA — What to know about cannabis and CBD products ↗
• NIDA — Cannabis (Marijuana) ↗
• CDC — Cannabis frequently asked questions ↗

Related entries

THCA · CBD · CBN · THCV

← All encyclopedia entries