do b12 injections cause anxiety can Depression isn't always “in your head.” For many people, it Vitamin B12 IV Therapy: Benefits

Targeted disruption of the mouse lysosomal acid lipase gene: long-term survival with massive cholesteryl ester and triglyceride storage

Physiol Res

37 Measuring serum concentrations of MMA and homocysteine may be helpful in establishing B 12 deficiency, especially in people with borderline serum B 12 levels, ie, those between 148 and 300 pmol/L

Vitamin injections are not suitable for everyone

For many stroke and TBI survivors, muscle twitching can be frustrating during early participation in OT and/or PT, and can reduce motivation to do therapy exercises

There is no official link between high serum B12 and specific symptoms in most cases, though very elevated levels warrant investigation of underlying conditions