Most IgG food sensitivity panels return results in 1 to 3 weeks
If you have an underlying health condition like kidney disease, or if you take medication that interferes with B6 metabolism or absorption (such as oral contraceptives, hypertension drugs like hydralazine, and others), ask your doctor about appropriate supplement dosing
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
That trial did not run past 16 weeks, so it documents sustained response across that window rather than open-ended continuous use