efficacy of vitamin b12 injections Are Shots Right for You? Compounded Hydroxocobalamin (Vitamin B12) Injection
Description
Also, the concentration of serum MMA may be modified with various drugs, regardless of vitamin B12 status

We sell vials of dry methylcobalamin B12

Additionally, vitamin B 12 deficiency can also occur as a result of other malabsorptive conditions (such as inflammatory bowel disease, or pancreatic insufficiency), after certain procedures (such as bariatric surgery, or ileal resection), restricted diets (such as veganism), or the use of certain medications (such as metformin or proton-pump inhibitors)

anxiety on the other hand tends to go through the roof these days but that's built up in my 40s and I don't think it has anything to do with the B12

Hydroxocobalamin offers superior absorption, longer retention, and greater efficacy versus cyanocobalamin and methylcobalamin, making it the preferred choice for severe deficiency and for those needing frequent injections
(June 2008)