Dietary supplements are products containing: vitamins, minerals, herbal ingredients, amino acids, and substances such as enzymes and metabolites, marketed in several forms: tablets, capsules, soft gels, liquids, or powders. Sports supplements (protein powders and bars, gels, energy drinks) are a dynamic category of dietary supplements, and in 2011, sales grew by 14%, moving $ 21 billion, however only 5% of total sales of these supplements were designed for elite athletes.
While the general population