Metabolism: B12 is a cofactor in processing fats and proteins
I recommend: at least 2,000 mcg (g) cyanocobalamin once each week, ideally as a chewable, sublingual, or liquid supplement taken on an empty stomach or at least 50 mcg daily of supplemental cyanocobalamin or a serving of B12-fortified foods three times a day, each containing at least 190 percent of the Daily Value listed on the nutrition facts label Those over 65 years of age should take at least 1,000 mcg (g) cyanocobalamin every day
Handle under standard laboratory chemical hygiene
The ratio of Firmicutes to Bacteroidetes is a commonly-studied change with an increase often linked to HFD consumption/obesity in mice 43,44 and humans 45,46 (for review, see John and Mullin, 2016 47 )
Research-grade format: High-purity, lyophilized material designed to support reproducibility in non-clinical metabolic studies