This study, called "Effects of a Specific Substance in Smokers," is looking for 60 people who smoke cigarettes or e-cigarettes occasionally. It aims to understand how different substances, like depressants (such as alcohol), stimulants (such as caffeine), or analgesics, affect brain function, impulsivity, and cigarette cravings in young adults. You would receive either the Study Agent (a legal, non-prescription substance) or a Placebo (a substance with no or very small amounts of the Study Agent) through drinks or capsules. Researchers will measure impulsivity, brain activity (using fMRI), and cigarette craving after you take the substance. To join, you must be 21-40 years old, right-handed, fluent in English, and have smoked 1-27 days in the past month. The study's goal is to help develop better ways to help young adults quit smoking.

Study design

This is an interventional study planning to enroll 60 participants. Participants will receive either the Study Agent or a Placebo.

What's involved

You would consume beverages and/or capsules containing the Study Agent or Placebo. Measurements of impulsivity, brain activity, and cigarette craving will be taken at specific times after consumption.

Compensation

Not stated in the trial record.

Follow-up

The study will assess how substance-induced changes predict cigarette use over the course of 1 year.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.