side effects of b12 injections in dogs Are Shots Safe? Royal Palm Beach Medical Group Vitamin B12 Deficiency in Dogs:

To summarize, B-Complex supplements combine a number of B Vitamins into a convenient package to support cellular metabolism, brain and nervous system health, and whole-body wellness

Use a new sterile syringe and needle for each draw

Clinical Nutrition, 38(4), 1747-1755

Severe hypokalemia after parenteral vitamin B12 administration is a rare complication, although potassium monitoring may be considered in patients with severe deficiency or other risk factors

Its probably me not being that computer savvy but I found it difficult to access and read these articles

These results further suggest that a balanced generation of ROS by mitochondrial complex I is crucial to maintain MNA cellular fitness