too much b12 injections cats Transdermal for Cats: How to Give a Cat a B12 Shot in Hind Leg Area Vitamin B12 Injection For Cats:

I recommend: at least 2,000 mcg (g) cyanocobalamin once each week, ideally as a chewable, sublingual, or liquid supplement taken on an empty stomach or at least 50 mcg daily of supplemental cyanocobalamin or a serving of B12-fortified foods three times a day, each containing at least 190 percent of the Daily Value listed on the nutrition facts label Those over 65 years of age should take at least 1,000 mcg (g) cyanocobalamin every day

Ref: Q.2

When your B12 levels are optimal, you may experience: Improved energy and reduced fatigue Better focus and mental clarity Enhanced mood and stress support Support for healthy metabolism and digestion While B12 is found naturally in foods like meat, fish, and dairy, many peopleespecially those with digestive issues, plant-based diets, or certain medicationscan struggle to absorb enough through diet alone

If youre feeling fatigued during GLP-1 treatment, this doesnt necessarily mean you are deficient in vitamin B12, though