Vitamins A and D are categorized as fat-soluble vitamins as they are stored in the fatty portions of the body's organs and tissues. Vitamin A is available in two forms: pre-formed Vitamin A (from fish liver) and Pro Vitamin A (Beta carotene from fruits and vegetables). The Vitamin D-3 in Carlson Vitamin D soft gels and Ddrops is derived from lanolin (sheep's wool). Vitamin K is in the form of Vitamin K2 (menatetrenone).
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