b12 injection 2500 mcg Vitamin 2500mcg Shot of Energy Fast Dissolve Chewable Tablets - Quick Release Cherry Flavored Sublingual B12 Vitamin Methylcobalamin B12 Injection 2500mcg -

Enzyme stability The cyclic disulfide bond structure makes it less likely to be degraded by proteases in adipose tissue, prolonging the action time

The filtered out B12 from the liver goes into the bile to the duodenum where it goes back into the intestine to join with intrinsic factor and makes another pass through the gut

Intake-related elevation as the most common explanation Most of the time, a high B12 traces back to something the patient took or was given

Scherer, T

In plant products, only those that are fortified (i.e., that have been supplemented) are a source

They conveniently leave out the part where those trials failed to show a meaningful effect