Colnatur Classic GO Neutral Colnatur is a pure assimilable natural collagen food supplement with vitamin C for the care of joints, bones and muscles. Colnatur Classic GO helps us to: Cartilage: Vitamin C contributes to the normal formation of collagen for the normal functioning of cartilage. Muscles: Proteins help preserve muscle mass. Bones: Proteins contribute to the maintenance of bones under normal conditions. Vitamin C contributes to the normal formation of collagen for normal bone function. Skin: Vitamin C contributes to the normal formation of collagen for the normal functioning of the skin. Vitamin C contributes to the protection of cells against oxidative damage. Teeth: Vitamin C contributes to the normal formation of collagen for the normal functioning of the teeth. Gums: Vitamin C contributes to the normal formation of collagen for the normal function of the gums. It is recommended to take 10.2 grams (1 sachet) daily dissolved in a minimum of 150 ml of: water, milk (alone or with coffee, cocoa ...), vegetable drinks and other liquids, or yogurt. No incompatibilities have been reported with the taking of medications or other food supplements. It takes a minimum of three months to see results. Not suitable for phenylketonurics. Those who require a protein-restricted diet (very severe kidney or liver failure) should take the product under medical supervision. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. It is advisable not to exceed the expressly recommended daily dose. The product must be kept out of the reach of young children.