Collagen Fit 15g with NR - UnflavoredTHORNE Collagen Fit is an unflavored collagen powder specifically designed for athletes and active individuals. Each serving delivers 15g of types I and III grass fed, hormone free collagen peptides, 125mg of nicotinamide riboside (NR), and 50mg of betaine anhydrous in a convenient powder form. The collagen peptides undergo a specialized hydrolysis process that breaks them into shorter amino acid chains for enhanced absorption and bioavailability.