in the human body's natural nutrients. These nutrients are manufactured because the cost or difficulty of extracting the same nutrients from natural sources, they would too expensive or scarce. Among these include vitamin C and B complex vitamins Strictly synthetic: nutrients manufactured in the laboratory that are somehow different from the natural nutrients. Some nutrients, like vitamin E, may not be copied exactly, anyway, the synthetic analogues are very inexpensive and are used by many manufacturers. Nutrients obtained from yeast grown in rich media: minerals and some vitamins are manufactured pharmacologically added to the medium used to grow yeast of Saccharomyces. This will get vitamins and minerals similar in yeast. There are arguments in favor of these categories But what we must realize is this. Vitamin E is best absorbed in its natural form (D-alpha tocopherol) than in the synthetic (L-alpha tocopherol) Vitamin C in its chemical form, such as ascorbic acid, is cheaper but can irritate the stomach, we solve it by substituting more alkaline forms (ascorbate) Beta carotene is the best source of vitamin A and provitamin that only become vitamin A in the amount needed to avoid overdoses. Essential fatty acids derived from vegetable oils (borage, wheat germ ...) encapsulated product more expensive but it protects it from oxidation while maintaining their biological characteristics intact. The ore in his presentation "chelated" is one that is surrounded by chains of amino acids. The point where the chelated minerals are absorbed into the small intestine which is negatively charged. The inorganic minerals: oxides, phosphates, carbonates, etc.. ionize in the stomach quickly, preventing further absorption in the intestine. The organic chelates are more stable as the mineral wrap that prevents the ionization in the stomach. Organic mineral chelates, fumarate, gluconate, citrate and amino acid chelated minerals to have a higher rate of absorption through the intestinal walls. The free amino acid formula foods are ingested in its pure crystalline form, not experiencing any type of gastric digestion, and only a small intestinal digestion, being quickly absorbed through the portal vein, only 5 to 10 minutes after being consumed orally. It will be highly recommended to turn our nutritional supplements do not contain potential allergens such as yeast, soy, milk, egg, wheat, corn, sugar, salt and starch. They must be packaged in the best possible way to be very useful amber glass to maintain the potency of nutrients.