This study is testing whether a medication called Vyvanse and/or a reward-based behaviour approach called contingency management can help people reduce or stop their methamphetamine use. In addition, participants will receive usual addiction treatment at the clinic. The study will assess how effective these treatments are, their safety, and participant satisfaction. Results could help improve treatment options for methamphetamine use in Canada.

If you are interested in participating, please contact our research coordinator at 236-688-7273. They will provide you with information about the study and, with your consent, ask some pre-screening questions to determine your eligibility. If you qualify, you will be scheduled for a screening visit at the Rapid Access Addiction Clinic. This visit includes a consent process and a physician assessment to further evaluate your eligibility. If eligibility is confirmed by the research physician, you will be randomly assigned to a treatment group, and the medication induction phase will start. Your first week on the medication, you will return to the clinic 3 times, and then once a week.