This is a unique formula of Vitamin D3, plus the fat-soluble vitamin family of Vitamins K2, E, and A; Beta Glucan; Turmeric; L-Carnitine; Calcium; Magnesium; and includes liver and kidney support. Vitamin D helps the “adaptive” immune response maintain its innate balance with the body’s ‘acquired’ immune system processes. Replete with the necessary Vitamin K2 which should always accompany Vitamin D supplementation, this is a top of the line, clinically effective supplement for establishing activated Vitamin D receptors associated with optimal health. Also comes in a liquid version: #199, Vitamin D3LQ (Vitamin D3 + K2).