A product that is one of the best sources of vitamin B12
– When there is a deficiency of vitamin B12 in the body, energy levels drop. Beef liver, one of the best sources of this vitamin, can help to remedy the situation.
– This product also contains a lot of protein, without which vigour quickly declines.
– Some people do not like liver at all – they can get B12 from meat, poultry, fish and eggs.