Vitamin B12 250 ml, 1000 mcg ml In the meat and dairy industry, animals are often supplemented with Vitamin B12 due to modern farming practices that limit their natural intake. So people who eat animals are simply taking a Vitamin B 12 Injectable for Horses, Dogs and Cats 1000 mcg 250 ml Richtafort Phosphorous + B12 Injection 100mL Vitamin B 12 Injectable Solution Buy Troy Vitamin B12 Injection 100ml for Dogs, Cats, Horses & Cattle