The agency cited insufficient information about potential harm, immune reaction risks, contamination concerns, and lack of any approved indication
Nevertheless, studies utilizing more specific biomarkers of vitamin B 12 status, including measures of holo-transcobalamin and methylmalonic acid, have shown more consistent results and a trend towards associations between poor vitamin B 12 status and faster cognitive decline and increased risk of Alzheimers disease (82-86)
Slower absorption means a more gradual, sustained release
This means a lower and less predictable amount of the active compound might reach systemic circulation, potentially requiring higher doses and introducing variability into research findings
The B COMPLEX VITAMINS are intimately involved with red blood cell formation
10.1002/macp.1964.020720110 298 JirgensonsB