Exclusion Criteria:

• 1. Able to speak and read English.
• 2. Not seeking treatment at the time of the study.
• 3. Between the ages of 21 and 55 years.
• 4. Engaging in at least one binge drinking episode, per the NIAAA definition, in the last 30 days.
• 5. Fulfillment of moderate or severe DSM-5 diagnostic criteria for AUD based on computerized SCID results reviewed by a psychiatrist or psychologist.
• 6. ECG, read by cardiologist, within normal limits.
• 7. Body mass index of 19 - 35.
• 8. Birthing individuals using an effective form of birth control and not pregnant or breast feeding.
• 9. Judged by the medical staff to be psychiatrically and physically healthy (i.e., no current severe SUD or psychiatric diagnoses other than AUD or Tobacco Use Disorder; no current physical diagnoses that would interfere with study participation according to study physician judgment).
• 10. Not currently physiologically dependent on any substances.
• 11. Able to abstain from alcohol during admission (i.e., not physically dependent on alcohol and scores less than 8 on Clinical Institute Withdrawal Assessment for Alcohol \[CIWA-Ar\] at screening).
• 12. Not currently taking any prescribed medications for a chronic condition (other than birth control).
• 13. No indication of sleep apnea on the STOP-Bang questionnaire (score of 5 or greater).
• 14. No contraindications/allergies to suvorexant.