Liver

The liver is the body's primary metabolic organ - responsible for over 500 distinct biochemical functions. It synthesises proteins, detoxifies metabolic waste, stores vitamins and minerals, and regulates virtually every nutrient pathway. No other organ coordinates as many processes simultaneously.

Bovine liver contains the most concentrated form of preformed vitamin A (retinol) available from food, alongside adenosylcobalamin - the biologically active form of B12. These are not synthetic analogues. They arrive in the matrix that evolved to carry them.

The liver also contains the highest food-source concentrations of choline, folate, and copper - three nutrients whose deficiencies remain clinically common. Including liver in a supplement formula is not redundancy. It is addressing real nutritional gaps with real biology.