Product Description Sundown B12 provides you with a high potency source of this essential B Vitamin, which is also known as Cyanocobalamin. B12 supports heart and circulatory health, contributes to a healthy nervous system, and plays a role in energy metabolism.(3) B12 also aids in the normal development and the regeneration of red blood cells.(3) This time release formula allows you to reap all the benefits B12 is known for over a prolonged period of time. Sundown's Vitamin B-12 is essential for normal blood formation and the protection of nerve cells. Those taking antacids, on a strict vegetarian diet, and older adults with impaired absorption may benefit from B-12. From the Manufacturer Timed release. High potency B-12. Benefits: Sundown's Vitamin B-12 is essential for normal blood formation and the protection of nerve cells. Those taking antacids, on a strict vegetarian diet, and older adults with impaired absorption may benefit from B-