Typically, patients with a deficiency might start with more frequent injections, often weekly, and then switch to monthly maintenance doses once levels stabilize
Well look at what Vitamin B12 does, signs of a lack, and when shots are needed
The standard dose is 1000 mcg, given as an intramuscular or subcutaneous injection
The effects of oral B12 vitamins become visible after a minimum period of 2 to 4 weeks
Owners will likely have gained more experience administering medications and may have higher awareness and understanding of the importance of medication compliance for their pet (3), although older pets visit their veterinarian for preventatives less frequently than their younger counterparts (13)
No specific food will counteract the injection, so there are no forbidden foods due to the shot