Yes, there is actual evidence documenting that intravenous infusions of NAD+ may be useful in the treatment of addiction. NAD+ is a coenzyme that plays a critical role in several important metabolic processes in the body, including energy metabolism, DNA repair, and the regulation of gene expression. NAD+ can help to reduce cravings and alleviate withdrawal symptoms. It also plays a role in supporting the liver's ability to metabolize alcohol, as well as helping to reduce the severity of alcohol withdrawal symptoms.