Non-invasive Vagal Nerve Stimulation as Novel Treatment to Improve Functional Outcomes in Veterans With Alcohol Use Disorder

This study is testing whether a non-invasive device that gently stimulates the vagus nerve (a major nerve connected to the brain) through the skin of the neck can help veterans with alcohol use disorder reduce cravings and improve brain function. This is a drug-free, wearable treatment approach. **You may be eligible if...** - You are a veteran between 21 and 65 years old - You have moderate or severe alcohol use disorder and drink heavily (5+ drinks for men, 4+ for women on the same occasion, 5+ days in the past month) - You can safely go without alcohol for 12–24 hours - You can speak and read English **You may NOT be eligible if...** - You have had severe alcohol withdrawal symptoms (seizures, hallucinations, delirium) in the past 6 months - You are in an abstinence-based treatment program - You use other substances heavily - You have a severe psychiatric disorder with psychosis or significant cognitive impairment - You are at risk of suicide or violence - You have a pacemaker or certain metal implants - You currently use opioids or benzodiazepines Talk to your doctor to see if this trial is right for you.