Vitamin B12 Vitamin D3

Vitamin B12, also known as cobalamin, is a water-soluble vitamin essential for nerve function and the formation of DNA and red blood cells. It is found naturally in animal products and is often produced industrially through bacterial fermentation. Vitamin D3, or cholecalciferol, is a fat-soluble vitamin that helps the body absorb calcium and phosphorus. It is produced in the skin when exposed to sunlight or can be obtained from animal-based foods and is also manufactured for supplements and food fortification.

Manufacturers add Vitamin B12 and Vitamin D3 to foods to increase their nutritional value, particularly in fortified products like cereals, plant-based milks, and nutritional drinks. They are often included to help consumers meet their daily recommended intake of these essential vitamins, especially for individuals who may not get enough from their diet alone.

Vitamin B12 and Vitamin D3 are recognized as essential nutrients. The US National Academies have established Tolerable Upper Intake Levels (ULs) for Vitamin D. Both vitamins are generally recognized as safe (GRAS) by the FDA when used as nutrients. JECFA and EFSA have evaluated these vitamins. While crucial for health, very high intakes of Vitamin D can lead to adverse effects, though this is rare from food sources alone. Evidence does not suggest significant health concerns from typical dietary intakes of Vitamin B12.