Vitamin B3

We need about 10 to 20 milligrams per day (1 milligram = 0.001 gram) of nicotinic acid.In the intestinal tract, the amino acid tryptophan can be converted to niacin by bacterial action and thus can serve as a source for part of the niacin we need.Some doctors recommend inositol hexaniacinate for people who need large amounts of niacin because it has not been linked with any of the usual niacin toxicity in scientific research.

Vitamin B3 is essential for normal growth and for healthy skinWhen used as therapy for a specific disease, niacin, niacinamide, and inositol hexaniacinate are taken in dosages much higher than nutritional needs, about 1 to 4 g daily.
Because of the risk of liver inflammation at these doses, medical supervision is essential.

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Zinc

Zinc is an essential mineral, including to prenatal and postnatal development.Zinc deficiency affects about two billion people in the developing world and is associated with many diseases.In children, deficiency causes growth retardation, delayed sexual maturation, infection susceptibility, and diarrhea.
Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity
Zinc is a chemical element with symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn²⁺ and Mg²⁺ ions are of similar size...

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