how long to feel the effects of b12 injection Fast Do Injections Work? Results Timeline Benefits of Vitamin B12 Shots

The concern that allergy shots, which modify the immune systems response to allergens, could potentially trigger an autoimmune disease is understandable given that autoimmune diseases occur when the bodys immune system mistakenly attacks healthy tissue

Drug design, development and therapy , 9 , 2485-99

Injectable BPC-157: Safety Considerations Medical Supervision and Sterile Technique Injectable BPC-157 requires medical oversight because injections involve sterility, product quality, route of administration, and injection-site safety

You might try mixing the Vitamin B12 with a small amount of wet food and see if he will eat it

PMID 29216732

B12 also keeps the nervous system healthy and helps in the release of energy from food