THC
Delta-9 THC · Tetrahydrocannabinol
Primary intoxicating cannabinoid in cannabis. Clear impairment risks, dependence potential and adverse mental health outcomes at high-dose or regular use.
Key caution
Impaired memory, attention and psychomotor function — do not drive or operate machinery
Editorial review status — shown for transparency
AI Context
Deterministic summaries of curated archive data. Not medical advice. Not a use guide.
THC: profile overview
THC is a cannabinoid with moderate evidence quality and a elevated risk profile. Primary intoxicating cannabinoid in cannabis. Clear impairment risks, dependence potential and adverse mental health outcomes at high-dose or regular use. Individual responses vary significantly. This summary is drawn from the curated SubsAtlas archive.
- Risk profile: Elevated — elevated concern reflecting meaningful risks or significant interaction potential.
- Evidence quality: Moderate — some research exists but results are mixed or populations differ.
- Key caution: Impaired memory, attention and psychomotor function — do not drive or operate machinery
- Interaction concerns noted with: Alcohol, Sedatives, Benzodiazepines.
- Primary compounds: Delta-9 THC.
Impaired memory, attention and psychomotor function — do not drive or operate machinery
Limitations
- Based on curated SubsAtlas archive data only.
- Not medical advice. Not legal advice. Not a use guide.
- Individual responses vary. Source review is ongoing.
- Do not rely on this for personal decisions.
AI Context summarizes curated SubsAtlas archive data only. Not medical advice. Not legal advice. Not a use guide. No external AI calls are made.
Quick Facts
Concise educational context for orientation. Effects and risks vary.
Category
cannabinoid
Main compounds
Delta-9 THC
Reported profile
Euphoria, Altered perception, Relaxation, Impaired memory and attention, Anxiety or panic at high dose, Appetite changes, Sleepiness
Onset range
General context varies by route and product
Duration range
General educational range only
Main caution
Impaired memory, attention and psychomotor function — do not drive or operate machinery
Body & Mind Map
Visual summary of reported effect patterns. Effects vary.
Community Signal
Community Signal is based on anonymous structured reports. It does not represent a recommendation.
Common warning
Preview signal — not from live moderated reports. Impairment and anxiety reports vary widely by product, potency and individual.
Risk awareness
Clear cautions, uncertainty and interaction concerns. This is not medical advice.
Main risks
- Impaired memory, attention and psychomotor function — do not drive or operate machinery
- Acute anxiety and panic reactions, particularly at high doses or in sensitive individuals
- Adverse mental health risk — elevated in those with personal or family history of psychosis
- Dependence risk with regular high-potency use
- Potency varies widely — product THC content is not standardised across markets
Avoid if…
- You have relevant medical concerns without professional guidance
- You are in an unsafe setting
- You need to drive or operate machinery
Do not combine with…
- Alcohol
- Sedatives
- Benzodiazepines
- Opioids
- Other CNS depressants
- Other impairing substances
- Medications with psychoactive effects
Medical caution
- Review medication interactions with a qualified professional
- Seek professional help for medical concerns
Unknowns
- Product quality may vary
- Individual response varies
- Evidence may be incomplete
Interaction Warnings
Interaction concerns are shown for risk awareness only. SubsAtlas does not describe any combination as safe.
- THC combined with alcohol or other CNS depressants compounds impairment and adverse effects. THC may interact with medications metabolised via CYP enzymes. Effects and risk increase with product potency and use frequency.
General onset
General context varies by route and product
Peak
Varies by substance, product and person
Duration
General educational range only
After effects
May vary; monitor uncertainty and risk context
Timeline ranges are general educational context, not instructions.
Sources
Evidence quality, source type and review context are separated from community patterns.
Sources need editorial review
Sources listed here have not yet completed editorial review. They are shown for transparency, not as verified citations. What source review means
Curated THC risk profile
editorial source · Reviewed 2026-05-16
Source status: needs-review · How source review works
Legal context
Legal status varies by country, state and local regulation. This is educational context only — not legal advice.
THC legal status varies by country, state and local jurisdiction. In some regions THC is available through regulated cannabis markets; in others it is controlled or prohibited. Legal thresholds, permitted contexts and product types vary widely. This profile is for educational context only.
Legal status varies by country, state and local regulation. SubsAtlas provides educational context only and does not provide legal advice, sourcing or buying guidance.
Legal context requires ongoing review as laws change. How legal context works
Similar Entries
Related educational profiles for comparison and context.
CBD
Non-intoxicating cannabinoid discussed for calm and sleep support. Medication interaction concerns and significant product quality variation are key considerations.
Main caution
Significant drug interaction potential — CBD affects liver enzymes that metabolise many medications
Legal: Legal context varies
Cannabis
Plant profile covering cannabinoids, terpenes, reported effects, impairment, dependence, legal variation and risk context across a wide range of products.
Main caution
Impaired coordination, memory and judgment — do not drive or operate machinery
Legal: Legal context varies
Alcohol
Legal CNS depressant with well-documented impairment, dependence, organ health risks and extensive interaction concerns across many substances and medications.
Impaired judgment and coordination — do not drive or operate machinery
Legal: Legal context varies
Related comparisons
Structured educational comparisons featuring this profile.
Shareable cards
Visual educational summaries featuring this profile.
Related guides
Educational guides with relevant context for this profile.
THC vs CBD: effects, risks and evidence
Cannabis terpenes explained: aroma, evidence and uncertainty
Legal context explained: why status varies by region
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Educational information only. Not medical advice. No personalized dosing, sourcing, preparation or optimization guidance.