For athletes training at high intensities who may have increased nutrient demands, this efficiency gap becomes particularly relevant
In a study of 10 healthy male volunteers, omeprazole, in doses of 20 mg40 mg per day, caused a significant decrease in the oral absorption of methylcobalamin, vitamin B12
Once reconstituted into a liquid solution, degradation begins, and the stability window shortens significantly
Availability, regulatory status, and supply chain reliability all play into the practical calculus of choosing between them
Injections are particularly good in these cases, as they bypass the tract for higher absorption rates than with food or oral supplements