Milk contains many vitamins, including vitamin B12. Whether you’re having full-fat milk or skim, there is a significant amount of B vitamins in there. A cup of skim milk will contain about 20% DV of vitamin B12. Having a glass of milk every morning is a great way to jumpstart your day. Perhaps you like to calm down with a warm glass of chocolate milk. Either way, you can rest easy knowing that you’re getting your dose of vitamin B12.