Vitamin B12: Benefits, Deficiency Symptoms, Dosage & Best Sources Mind Lab Pro 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 Do Vitamin B12 Shots Need To Be Refrigerated? Invigor Medical Low Vitamin B12? Diet vs. InjectionsWhat Works Faster? Top Meats High in Vitamin B12 People love to bring up B12 like it's a reason to eat meat. But here's the irony Even meat eaters can be deficient in B12. That's because B12 comes from bacteria in