Weight loss represents a physical and psychological stressor
Vitamin B12 for Cats Overview About Vitamin B12 for Cats Vitamin B12, or cyanocobalamin or just cobalamin (going forward, well use all three terms interchangeably), is required for many enzymatic processes in animals that are needed for normal cell growth and function, including protein synthesis, nerve conduction, metabolism of fats and carbs, and generation of new red blood cells
But it should eventually calm the palpitations or at least keep them from getting worse
Although injecting B-12 for weight loss purposes may cause little harm, theres no scientific evidence supporting its effectiveness
Other people may need treatment only while a reversible cause is managed, while a medicine is being taken, or until diet and vitamin stores have recovered