THC Titration of High-Potency Cannabis Concentrates
This research is exploring how people use powerful cannabis vapes, known as concentrates, which can have very high levels of THC (the main active chemical in cannabis). The study will look at whether regular users can accurately control or "self-titrate" the amount of THC they take in when vaping products with different strengths (30%, 60%, or 90% THC). Researchers also want to understand the short-term effects of these different strengths on a person's thinking ability, physical responses, and how likely they are to want to use more. This information will help understand the potential health risks of these strong products and might inform public health guidelines.
At a glance
What is this study about?
This study is about understanding how people use very strong cannabis products called concentrates, which are often vaped. These concentrates can contain an extremely high amount of THC, the part of cannabis that causes its effects, sometimes as much as 90-95%. Because these products are so strong, there are concerns about potential health risks, like developing a dependence on cannabis, experiencing mental health issues, or difficulties with thinking and memory.
The main aim of this study is to see if regular cannabis users can accurately adjust how much of the strong concentrate they use to get the desired effect, without taking in too much THC. This is often called 'self-titration.' The research will also compare what happens to people's minds and bodies when they use concentrates with different strengths – specifically, 30%, 60%, and 90% THC. This includes looking at how it affects their thinking, their physical reactions, and if stronger products make them more likely to want to use cannabis again.
By carefully studying how people respond to these different strengths, the researchers hope to understand the immediate risks linked to using very potent cannabis concentrates. This information is important for guiding decisions about how these products are sold and whether there's a need for more public education about the potential risks. The study will be carried out in Toronto, Canada, where regulated cannabis products are more easily available for research than in some other places.
Key takeaways
- Researchers are studying potent cannabis vapes (concentrates).
- The study looks at how people use different THC strengths.
- It aims to see if users can control their THC intake.
- The research will also measure effects on thinking, body, and addiction risk.
- This information could help shape public health policies for cannabis products.
Who may be eligible?
To join this study, you need to be between 19 and 55 years old. You should regularly use cannabis, about 1 to 4 times a week, and have experience with vaping high-strength cannabis concentrates (over 90% THC) at least three times.
There are also some health requirements. You shouldn't have certain heart or lung conditions, severe mental health issues like psychosis or bipolar disorder, or a recent history of serious depression or anxiety. If you're a woman, you can't be pregnant or breastfeeding and must use birth control. You also shouldn't be taking certain medications that contain THC or CBD.
Before each study visit, you'll need to avoid cannabis for 48 hours and alcohol for 12 hours. You'll also need to make sure you don't drive for 24 hours after each visit and avoid recreational drugs for 48 hours before visits.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you between 19 and 55 years old?
- Do you use cannabis regularly (1-4 times a week)?
- Have you used high-strength cannabis vapes before (over 90% THC) at least 3 times?
- Are you able to avoid cannabis for 48 hours and alcohol for 12 hours before visits?
- Do you have a healthy heart and lungs, and no severe mental health conditions?
What does participation involve?
The study involves several visits where you will be asked to vape cannabis concentrates with different THC strengths (30%, 60%, or 90%). Researchers will then measure the THC levels in your blood, observe how you use the vape, and ask you about your experiences and feelings. They will also test your thinking abilities (cognition) and monitor your body's responses. The visits will be structured as a "crossover trial," which means you will try each of the different strength concentrates at separate times. The exact number of visits and the total duration of the study are not specified in this summary, but you would be fully informed of these details before agreeing to participate.
Potential risks and benefits
Locations (1)
- Centre for Addiction and Mental HealthVerified postcodeToronto, Canada
Common questions
What is a cannabis concentrate?
It's a very strong form of cannabis that has much higher levels of THC, the main active ingredient, than traditional cannabis flowers.
What does 'self-titrate' mean?
It means trying to control how much of a substance you use to get your desired effect, like taking smaller puffs from a stronger vape.
Why is this study important?
It helps us understand the health risks of very strong cannabis products and can inform public health advice and regulations to keep people safe.
Will I know which strength concentrate I'm using?
The study uses a "randomized crossover design," meaning you'll try different strengths, but the details of which one at what time will be managed by the researchers.
Where does this study take place?
The study is being conducted in Toronto, Canada.
How to find out more
Sergio Rueda, PhD
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
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