Q. Following is called natures valium a]biotin b]folic acid c]vit b12 d]niacin D] Niacin Niacin is known as a natural tranquilizer. In a study on rats, niacin had similar effects to valium on the turnover of serotonin, noradrenalin, dopamine, and GABA in the areas of the brain that are thought to be affected by anxietyâ€”without being addictive. Some experts go so far as to call niacin "Nature's Valium." Niacin also helps decrease excess lactic acid levels and episodes of low blood sugar/hypoglycemia (from adrenal fatigue).