Cyanocobalamin
Cyanocobalamin is a tier 1 form of Vitamin B12 (Cobalamin), used in 9,300 on-market products .
9,300
on-market products
tier 1
quality tier
n/a
elemental fraction
Why this tier: Most extensively clinically studied form (basis of the pivotal dose-finding trial and most deficiency-treatment literature); a 2015 review found no evidence that the "coenzyme" forms are actually superior for preventing/treating deficiency.
Source: Eussen SJ et al. 2005, Arch Intern Med 165(10):1167-1172, PMID 15911731; Obeid R et al. 2015, Mol Nutr Food Res 59(7):1364-1372, PMID 25820384