Clin2
NCT04704271Possibly a fitRecruiting

Study on THC effects in people with past cannabis use

Cannabis

Part of Mental health clinical trials.

This Phase 1 study looks at how THC (the main mind-altering ingredient in cannabis) affects healthy volunteers shortly after use. It focuses on differences between people and includes those who have used cannabis before.

Summary written for real people, not researchers, by Clin2.

Phase
Phase 1
Enrollment
100 people
Ages
18 years to 55 years
Study type
Interventional

Who can take part

  • You must have used cannabis at least once in your life
  • You should be in generally good physical health
  • You should be in generally good mental health
  • You must not be “cannabis naïve” (never used cannabis before)
  • You should not have major recent or ongoing stressors

View the official record on ClinicalTrials.gov

Quick eligibility check

Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.

Similar studies

Other trials that look related to this one.

NCT02811510Recruiting· Phase 1
Study of THC effects on people with past cannabis use

This Phase 1 study tests how THC (the main active ingredient in cannabis) affects healthy adults, and whether effects differ by gender. It’s designed to learn about short-term body and brain responses to THC.

West Haven, Connecticut
NCT02781519Recruiting· Phase 1
Study how THC affects men and women who have used cannabis before

This Phase 1 study tests how delta-9 THC (the main active ingredient in cannabis) affects healthy adults, and whether the effects differ by gender. It may help researchers understand risks and responses to THC, which could guide safer use and future treatments.

West Haven, Connecticut
NCT05389930Recruiting· Phase 2
Study how cannabis affects alcohol drinking

This Phase 2 study looks at whether using cannabis changes how much alcohol you drink. You may be able to take part if you’ve been drinking heavily and using cannabis recently and can meet health and screening requirements.

Providence, Rhode Island
NCT06099379Recruiting· Phase 1/Phase 2
How CBD changes THC's effects: a dose study

This study tests different ratios of CBD to THC to see how CBD can change the effects of THC. It may help people who use cannabis occasionally understand how CBD can reduce unwanted side effects.

Montreal, Quebec
NCT05641766Not yet recruiting· Phase 2
Study effects of THC on brain activity during memory tasks

This Phase 2 study looks at how THC (from cannabis) changes brain signals during working memory tasks. It uses EEG and MEG (noninvasive brain recording) to understand changes in “neural noise” and how well information moves through memory networks.

West Haven, Connecticut
NCT05906511Recruiting· Early Phase 1
Study how THC levels change in older adults

This early study measures how a THC dose (by mouth or vaporized form) moves through the body and how it affects the body’s responses. It mainly looks at safety and how THC behaves in older adults, including people who have used cannabis before.

West Haven, Connecticut

Hear when a new Cannabis trial opens

We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.