Natural vitamin D, concentrated formula. Food supplement based on concentrated vitamin D3 at 800 IU. Immunity: - Maintenance of bone structure (elderly people, menopause). - Need for a high intake of vitamin D. ERGY D Plus is specially indicated to guarantee a high supply of vitamin D. It may be recommended as an immune support during periods of risk (winter, pollen season, etc.) In cases of bone and/or muscle fragility (menopause, elderly people), as it helps to maintain normal bone and muscle function. Advantages: Ingredients of 100% natural origin. Neutral flavor. 1 drop = 20 µg = 800 IU of naturally sourced vitamin D = 400% RI (Reference Intakes) ERGY D Plus is a formula especially rich in vitamin D3: 1 drop of ERGY D Plus provides 800 IU (20 µg) of vitamin D3, which contributes to the normal function of the immune system and the maintenance of bone structure. This concentration allows for supplementation tailored to the needs of each individual. Did you know? The vitamin D in ERGY D Plus comes from lanolin, a natural substance. After extraction, the lanolin is exposed to UVB light and produces vitamin D3, just as our skin does in sunlight. Vitamin D is an oily substance, so the organic rapeseed oil carrier allows for excellent absorption. The term vitamin D actually encompasses several molecules derived from sterols (cholesterol family): vitamin D2 or ergocalciferol, produced by plants. vitamin D3 or cholecalciferol of animal and endogenous origin (produced by the body). In fact, vitamin D3 is naturally synthesized in the skin under the action of the sun's UVB rays, from a cholesterol derivative. ERGY D Plus (800 IU) and ERGY D (200 IU) contain vitamin D in the form of vitamin D3.