A Single-Dose Study to Evaluate Safety and Efficacy of CS-1103 in Participants Receiving a Single Dose of Methamphetamine

Major Inclusion Criteria: 1. Healthy participants aged 18 to 55 years, inclusive; 2. Meets DSM-5 criteria for methamphetamine use disorder; 3. Not seeking treatment for methamphetamine use disorder; 4. Primary route of methamphetamine self-administration must be intravenous or smoking; 5. Able to abstain from methamphetamine without experiencing severe withdrawal; 6. A body mass index between 18 to 30 kg/m2, inclusive and a minimum body weight of 56 kg; 7. Females must not be lactating and must have a negative pregnancy test during screening and admission. Major Exclusion Criteria: 1. Estimated glomerular filtration rate \<60 mL/min/1.73 m2; 2. History of cardiovascular disease; 3. Current moderate to severe use disorder for alcohol, cannabis, cocaine, opioids, or benzodiazepines; 4. History of any clinically important disease or disorder which, in the opinion of the Investigator, may interfere with safe study participation.