vitamin b12 monthly injection Vitamin B-12 Injectable for Horses,

And it is only a reliable indicator of B12 status when the persons folate is normal (above 4 ng/mL)

More visible changes in body composition and energy levels typically appear between two to four months, with the most significant metabolic improvements occurring between four to six months as the dose reaches a therapeutic level

There are currently no government recommendations for B12 supplement dosages for vegetarians

"Insulin resistance and endothelial function are improved after folate and vitamin B12 therapy in patients with metabolic syndrome: relationship between homocysteine levels and hyperinsulinemia"

There isnt a single correct answer that applies to everyone

Three stand out as the most effective semaglutide, liraglutide, and tirzepatide