PURE LAB VITAMIN B12 5000MCG / 60STABS

PURE LAB VITAMIN B12 5000MCG / 60STABS. Methylcobalamin is the biologically-active form of vitamin B-12. Absorption of this essential vitamin depends on adequate production of intrinsic factor, secreted by a healthy stomach. However, neither dietary sources nor ordinary supplements containing vitamin B-12 will help an individual with low / no intrinsic factor secretion. Again, low stomach acid secretion and some auto-immune disorders are just some of the factors that can reduce the secretion of this special substance.