RecruitingPhase 2NCT05854667

Clinical Trial of High Dose Lisdexamfetamine and Contingency Management in MA Users

Addition of High Dose Stimulant and Engagement-focused Contingency Management (CM), Alone and in Combination, to Treatment as Usual (TAU) for the Management of Methamphetamine (MA) Use Disorder (ASCME): a Canadian Multi-centre, RCT


Sponsor

Centre hospitalier de l'Université de Montréal (CHUM)

Enrollment

440 participants

Start Date

Dec 5, 2023

Study Type

INTERVENTIONAL

Conditions

Summary

The goal of this clinical trial is to learn if administering a high dose stimulant with Contingency Management reduces days of use in adults who use methamphetamine better than the usual treatment provided by the clinic. The main questions the trial aims to answer are: Is a high dose stimulant better than a placebo and usual treatment at helping reduce the number of days they use methamphetamine? Is a high dose stimulant with contingency management better than placebo and usual treatment at helping people reduce the number of days they use methamphetamine? Participants will be placed randomly into one of four groups: 1. Usual treatment and placebo 2. Usual treatment, placebo and contingency management 3. Usual treatment and high dose stimulant 4. Usual treatment, high dose stimulant and contingency management Participation includes the following: 1. Participants will receive medication or placebo weekly for 15 weeks. 2. Participants will attend the clinic for weekly treatment 3. Participants will attend the clinic once every 2 weeks for study visits. Each visit will take about an hour to complete. At these visits, participants will be asked to provide a urine sample and complete questionnaires.


Eligibility

Min Age: 18 YearsMax Age: 55 Years

Plain Language Summary

Simplified for easier understanding

This Canadian clinical trial tests whether a high-dose stimulant medication (lisdexamfetamine) combined with contingency management — a behavioral therapy that provides rewards for drug-free urine tests — can help adults reduce or stop methamphetamine use compared to usual treatment alone. Participants are randomly assigned to one of four groups: usual care with placebo, usual care with placebo plus contingency management, usual care with the stimulant medication, or usual care with the stimulant plus contingency management. Adults aged 18–55 with a moderate to severe methamphetamine use disorder who used meth on at least 14 days in the past month and want to reduce or stop use may be eligible. Participation involves 15 weeks of weekly medication pickup and clinic visits every 2 weeks for urine testing and questionnaires. This summary was generated by AI to help patients understand the study in plain language.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

DRUGTreatment as Usual plus Placebo

Participants receive once daily Lisdexamfetamine matched placebo for 15 weeks, as well as treatment as usual at clinical site.

DRUGTreatment as Usual plus Placebo plus Contingency Management

Participants receive once daily Lisdexamfetamine matched placebo for 15 weeks, as well as treatment as usual at clinical site, and engagement-focused contingency management for 12 weeks, week 2-13.

DRUGTreatment as Usual plus lisdexamfetamine (LDX-01)

Participants receive once daily Lisdexamfetamine for 15 weeks, as well as treatment as usual at clinical site. Medication is provided in 3 phases: Week 1 (Induction Phase): 100 mg (Day 1 and 2), 150 mg (Day 3 and 4), 200 mg (Day 5, 6 and 7) Weeks 2-13 (Maintenance Phase): 250 mg per day (or the maximum tolerated for each individual) and then will continue on the same daily dose Weeks 14-15 (Taper Phase): 150 mg (Week 14) and 50 mg (Week 15).

DRUGTreatment as Usual plus lisdexamfetamine (LDX-01) plus Contingency Management

Participants receive once daily Lisdexamfetamine for 15 weeks, as well as treatment as usual at clinical site. Medication is provided in 3 phases: Week 1 (Induction Phase): 100 mg (Day 1 and 2), 150 mg (Day 3 and 4), 200 mg (Day 5, 6 and 7) Weeks 2-13 (Maintenance Phase): 250 mg per day (or the maximum tolerated for each individual) and then will continue on the same daily dose Weeks 14-15 (Taper Phase): 150 mg (Week 14) and 50 mg (Week 15). Engagement-focused contingency management will be provided for 12 weeks, Week 2-13.


Locations(4)

Rapid Access Addiction Medicine Clinic, St. Paul's Hospital

Vancouver, British Columbia, Canada

River Stone Recovery Centre

Fredericton, New Brunswick, Canada

Center for Addiction and Mental Health

Toronto, Ontario, Canada

University of Montreal Hospital Research Center

Montreal, Quebec, Canada

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NCT05854667


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