b12 injections and ferritin Are Vitamin Shots Right for You? Vitamin B12 Injections: Benefits for
Description
European Journal of Endocrinology , 143(4), 535541

Contains no more than 57 mcg/L of aluminum

This is speculative, but it represents a more logical use case than running both compounds simultaneously at full dose

When your B12 levels are low, these processes slow down and you may feel tired and sluggish
