Abstract: Compositions containing nicotinamide riboside (NR) are provided. NR containing compositions are used in the care or treatment of skin and skin conditions. In some embodiments, the invention relates to pharmaceutical compositions and cosmetic compositions containing nicotinamide riboside. In further embodiments, the invention relates to methods of using nicotinamide riboside to promote the increase of intracellular levels of nicotinamide adenine dinucleotide (NAD+) in cells and tissues for improving cell and tissue survival. A method of treating signs or symptoms of aging or skin wrinkles in an individual is provided, comprising topically administering to the individual in need of such treatment an effective amount of the compound nicotinamide riboside, or salts thereof.

Abstract: The invention provides methods of purifying rebaudioside A from a mixture comprising glycosides of the plant Stevia rebaudiana. The methods of the invention are useful for preparing highly pure rebaudioside A compositions from crude Stevia starting compositions that are typically considerably lower in rebaudioside A concentration. The highly pure rebaudioside A compositions are useful as non-caloric sweeteners in edible or chewable compositions such as food, beverages, medicine, candy, chewing gum, and the like.

Abstract: The invention provides methods of purifying rebaudioside A from a mixture comprising glycosides of the plant Stevia rebaudiana. The methods of the invention are useful for preparing highly pure rebaudioside A compositions from crude Stevia starting compositions that are typically considerably lower in rebaudioside A concentration. The highly pure rebaudioside A compositions are useful as non-caloric sweeteners in edible or chewable compositions such as food, beverages, medicine, candy, chewing gum, and the like.