Nicotinamide riboside is a member of the vitamin B3 family, which also includes niacin and niacinamide. It's found in fruits, vegetables, meat, and milk.May aid weight loss: Nicotinamide riboside helped speed up the metabolism of mice. However, it’s unclear whether it would have the same effect in humans and how strong this effect really is (23Trusted Source).May lower cancer risk: High NAD+ levels help protect against DNA damage and oxidative stress, which are linked to cancer development (24Trusted Source, 25Trusted Source).May help treat jet lag: NAD+ helps regulate your body’s internal clock, so taking niagen may help treat jet lag or other circadian rhythm disorders by resetting your body’s internal clock (26Trusted Source).May promote healthy muscle aging: Raising NAD+ levels helped improve muscle function, strength and endurance in older mice