anthocyanins + calcium + vitamin d

This product is an **oral combination dietary supplement** containing three main ingredients: **anthocyanins**, **calcium**, and **vitamin D**.\n- **Anthocyanins** are naturally occurring flavonoid pigments found in fruits and vegetables (especially berries) with antioxidant and possible anti-inflammatory properties. They have been suggested to support vascular health and potentially reduce oxidative stress.\n- **Calcium** is an essential mineral, crucial for bone formation, maintenance of bone strength, and many metabolic functions.\n- **Vitamin D** (usually in the form of cholecalciferol or ergocalciferol) is a fat-soluble vitamin essential for calcium absorption and bone metabolism. It also has roles in immune, musculoskeletal, and nervous system function.\n- **Mechanism of action:**\n - **Vitamin D** enhances intestinal absorption of calcium by upregulating the expression of calcium-binding proteins in the gut. The active form, 1,25-dihydroxyvitamin D, binds to the vitamin D receptor, regulating gene expression related to calcium and phosphorus homeostasis[1].\n - **Calcium** serves primarily structural roles in bone and teeth, and acts as a second messenger in many biological pathways.\n - **Anthocyanins** function mostly as antioxidants, scavenging free radicals and modulating oxidative stress and inflammation, but have no direct effects on calcium metabolism.\n- This combination is often marketed to support **bone health** and to reduce the risk of osteoporosis, with calcium and vitamin D providing evidence-based support for these uses[1][4]. Anthocyanin inclusion is based more on potential ancillary benefits (e.g., antioxidant support); its direct benefit for bone health is less established in the literature.\n- There is **no unique brand-name medication** or pharmaceutical product universally recognized for this exact three-ingredient combination; this formulation would primarily be encountered as a **multinutrient dietary supplement**.