The majority of pregnant women do not complain of morning sickness until the 6th week of pregnancy, 2 weeks after a missed period. But for some women, that nagging feeling can start as early as one week after conception, a full week before a missed period. Changes in hormones account for the queasiness that occurs.
DRUG CLASS AND MECHANISM: Niacin (nicotinic acid, vitamin B3) is a part of the normal diet that is essential to various chemical reactions in the body.
Niacin is a water-soluble vitamin essential for human health. The other name of niacin is vitamin B3. Main function of this vitamin in human body is to transform carbohydrate into energy. The vitamin helps to spread the energy from cells to the entire body. At the same time, niacin helps retaining the integrity of the blood cells.