The history of the vitamin: Nicotinic acid has been known for a long time: back in 1866, it was obtained by the German chemist Hubert by oxidizing nicotine isolated from tobacco. But until the 40s of our century, no one suspected that nicotinic acid has a vitamin effect. HER was recognized as a vitamin after it turned out that she perfectly cures pellagra, a serious disease from which thousands of people who ate mainly corn suffered. Vitamin PP got its name from the initial letters of the English words «pellagra preventing» — «warning pellagra». Why is it needed? Niacin is part of the enzymes involved in providing the body with energy through the oxidation of carbohydrates and fats. It is necessary for the secretion of salic acid in the stomach and the normal functioning of the digestive system. Niacin also helps to eliminate toxins from the body, improves blood circulation in small vessels, including the vessels of the placenta — during pregnancy. Niacin is involved in the regulation of the function of the thyroid gland and adrenal glands — endocrine glands, in case of violation of which there is a threat of abortion. It is important for the growth of the body, including the body of the fetus during fetal development. Preparations containing niacin are used in the treatment of anxiety, and this condition is known to often occur during pregnancy. Prescribe a vitamin for migraines and insomnia, which are also likely during pregnancy. The daily requirement for vitamin PP for pregnant and lactating women is 19-21 mg. Sources Unlike most other vitamins, the only source of which is food, vitamin PP can be synthesized in the human body from the essential amino acid tryptophan. However, this own synthesis is not enough to fully cover our need for vitamin PP. among the natural sources of this vitamin are peanuts, white chicken meat, liver and kidneys of cattle, potatoes, salmon, halibut, tuna, brewer’s yeast, soybeans, wheat bran, bread made from wholemeal flour and valuable grains, some mushrooms (in particular dried white). Since during pregnancy it is recommended to limit the consumption of nuts, fish, mushrooms due to the risk of allergic reactions in the pregnant woman and the formation of a predisposition to allergic conditions in the baby, the expectant mother should introduce synthesized vitamin PP into her diet as part of multivitamin preparations. Herbs rich in vitamin PP: alfalfa, burdock root, catnip, cayenne pepper, chamomile, gerbil, eyebright, fennel seed, fenugreek, ginseng, hops, horsetail, mullein, nettle, oats, parsley, peppermint, raspberry leaves, red clover, rose hips, sage, sorrel. Daily rate The daily requirement for vitamin PP for pregnant and lactating women is 19-21 mg, for an adult about 20 mg, for heavy physical labor — about 25 mg, for children from 6 months to 1 year — 6 mg; from 1 year to 1.5 years — 9 mg; from 1.5 to 2 years — 10 mg; from 3 to 4 years — 12 mg; from 5 to 6 years — 13 mg; from 7 to 10 years — 15 mg; from 11 to 13 years — 19 mg; for boys 14-17 years old — 21 mg; for girls 14-17 years old — 18 mg. Vitamin PP deficiency Lack of vitamin PP is accompanied by general fatigue, loss of appetite, headaches, skin lesions in the form of dermatitis, indigestion, dizziness.