THC
Clinical trials for THC explained in plain language.
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Study tests if potent weed vapes lead to overconsumption
Knowledge-focused Recruiting nowThis study looks at whether regular cannabis users can adjust how much they vape when using high-potency concentrates (30%, 60%, and 90% THC). Researchers will measure blood THC levels, puffing behavior, and subjective feelings of intoxication. The goal is to understand if people…
Matched conditions: THC
Phase: NA • Sponsor: Centre for Addiction and Mental Health • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
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Citrus compound meets cannabis: scientists study their combined effects
Knowledge-focused Recruiting nowThis study looks at how a natural citrus compound called d-limonene affects the body's response to THC, the main psychoactive ingredient in cannabis. Researchers will give healthy adults oral doses of THC, d-limonene, or both, and measure their feelings of drug effect and liking.…
Matched conditions: THC
Phase: PHASE1 • Sponsor: Johns Hopkins University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:38 UTC
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Cannabis compounds tested to fight HIV brain inflammation
Knowledge-focused Recruiting nowThis study looks at how CBD and THC, two compounds found in cannabis, affect inflammation and brain health in people with HIV. About 90 participants will take both substances in a random order over six weeks. Researchers will measure blood markers and brain function to better und…
Matched conditions: THC
Phase: PHASE2 • Sponsor: University of California, San Diego • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:28 UTC
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New study investigates the combined effects of marijuana and tobacco
Knowledge-focused Recruiting nowThis study looks at what happens when people who regularly use both marijuana and tobacco use them together. Researchers will measure how much THC and nicotine get into the blood and how the body responds. The goal is to better understand the health effects of using both substanc…
Matched conditions: THC
Phase: PHASE2 • Sponsor: University of California, San Francisco • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:08 UTC
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CBD vs THC: can cannabidiol take the edge off cannabis's psychoactive effects?
Knowledge-focused Recruiting nowThis study is testing whether different doses of cannabidiol (CBD) can reduce the psychoactive effects of THC in healthy adults who use cannabis occasionally. One hundred participants will inhale various combinations of CBD and THC and report their experiences. The goal is to fin…
Matched conditions: THC
Phase: PHASE1, PHASE2 • Sponsor: Centre hospitalier de l'Université de Montréal (CHUM) • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:05 UTC
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Yale researchers scan brains to see how THC impairs memory
Knowledge-focused Recruiting nowThis study looks at how THC, the active ingredient in cannabis, temporarily affects memory, learning, and balance in adults aged 21 to 55 who have used cannabis before. Ten participants will complete memory tasks and balance tests inside an fMRI scanner after taking either THC or…
Matched conditions: THC
Phase: PHASE2 • Sponsor: Yale University • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:54 UTC