Vitamin C1™ is a water-soluble vitamin that must be obtained in the diet by humans. Vitamin C is a necessary component for collagen formation, one of the primary connective tissue fibers. (Connective tissue forms the fascia that gives muscle shape and strength, tendons, ligaments, bone and cartilage.) Vitamin C is therefore essential for tissue healing, such as from wounds, burns and injuries. Vitamin C also helps on the structural adaptations that results from exercise training such as muscle growth and strengthening of bone.