THCV Facts
Cannabinoid;
Description
THCV (tetrahydrocannabivarin) is a naturally-occurring cannabinoid of the phytocannabinoid class. It is the propyl homolog of Δ9-THC — the same core structure with a shorter side chain. Rather than activating cannabinoid receptors like THC does, THCV blocks them at typical doses, producing its effects by opposing endocannabinoid signaling.[1]
Subjective effects include appetite suppression, increased mental clarity, and an absence of THC-like euphoria or intoxication. At clinical doses the experience is defined by what it removes — the hunger, sedation, and mental fog that THC produces are absent, replaced by a neutral, clear-headed state.
THCV shows no abuse liability at clinical doses and no established lethal dose in any species.[2] The primary risk is dose-dependent: at higher concentrations, THCV may switch from blocking cannabinoid receptors to partially activating them — but the threshold for this switch in humans is unknown.[1]
Dose and durationby route · individual sensitivity varies
Starts in 90 – 180 minLasts 6 – 12 hours
Body and dependence
- Acute toxicity
- Negligible
- Chronic toxicity
- Negligible
- Physical dependence
- None
- Psychological dependence
- Negligible
- Withdrawal
- None recorded
- Compulsive redosing
- Negligible
Tolerance
- Builds
- None
- Fully resets after
- Not recorded
- Carries over to
- Δ9-THC
Effectslikely at a common dose
- Body
- none likely · 6 possible, including Insomnia
- Thinking
- none likely · 1 possible
- Feeling
- none likely · 2 possible
- Awareness
- none likely · 1 possible
Who shouldn't take it
Combinations60 recorded
Seek help immediately if
Natural cannabis rarely causes a medical emergency — "greening out" is: pale/sweaty skin, dizziness, nausea or vomiting, anxiety or panic, rapid heartbeat, feeling faint — and usually passes with rest.
Seek emergency help for these — far more likely with synthetic cannabinoids ("spice" / K2):
- Seizures
- Severe chest pain; very fast or irregular heartbeat
- Unresponsiveness or extreme drowsiness
- Severe agitation, aggression, or psychosis
- Repeated vomiting; difficulty breathing
What to do
- Sit or lie them down somewhere calm, cool, and quiet
- Reassure them — cannabis panic and "greening out" pass with time
- Offer sips of water; a little sugar can help if they feel faint
- Recovery position if nauseated, drowsy, or vomiting
- Stay with them and monitor
- For seizures, chest pain, unresponsiveness, or severe agitation, call emergency services
Natural cannabis "greening out" resolves with rest, calm, and time, with no lasting harm. Synthetic cannabinoids are unpredictable and can cause seizures, cardiac events, kidney injury, and severe agitation that needs emergency care.
988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE
References
- [1]^abPertwee RG (2007) The diverse CB1 and CB2 receptor pharmacology of three plant cannabinoids: delta9-tetrahydrocannabinol, cannabidiol and delta9-tetrahydrocannabivarin — British Journal of Pharmacology doi:10.1038/sj.bjp.0707442
- [2]^McPartland JM, Duncan M, Di Marzo V, Pertwee RG (2014) Are cannabidiol and Δ9-tetrahydrocannabivarin negative modulators of the endocannabinoid system? A systematic review — British Journal of Pharmacology doi:10.1111/bph.12944