Vitamins and minerals supplements are a concentrated source of useful nutrients, in case of deficiency, to support the body's needs for these nutrients. They are not intended as a substitute for a healthy and correct diet but as a supplement to it, aimed precisely at "integrating" any deficiencies due to an insufficient intake or an increased need for energy and / or particular nutrients, in certain situations. In general, people who use supplements seek healthy lifestyles, want to optimize their physical and mental performance, and slow down the aging process. The types of food supplements today are very numerous: vitamins, mineral salts, tonics / energizers, stimulants of the immune defenses, lactic ferments, but also more specific products such as those for the well-being of bones and joints, for cardiovascular prevention, for sleep, for anxiety, for pregnancy, for menopause, for hair and for weight loss. Among the most used are those of vitamins and mineral salts, w