Vitamin K3

**Full Description:** Vitamin K3 (menadione) is a water-soluble compound that contributes to the body’s vitamin K requirements. Unlike K1 (phylloquinone) and K2 (menaquinone), which are derived from food, K3 is synthetically produced and commonly used in nutritional supplements and veterinary applications. **Key Functions:** - **Blood Clotting:** Supports the production of proteins needed for normal coagulation. - **Bone Health:** Aids in calcium binding, promoting bone mineralization. - **Antioxidant Properties:** Some studies suggest a role in reducing oxidative stress (research is ongoing). **Safety & Usage Notes:** - Vitamin K3 is **not widely used in human supplements** today due to potential toxicity at high doses. Instead, K1 and K2 are preferred. - In animal nutrition, it’s carefully regulated to meet dietary needs without exceeding safe limits. - Always consult a healthcare provider before taking vitamin K supplements, especially if on blood-thinning medications. **Natural Alternatives:** For adequate vitamin K intake, prioritize foods like kale, spinach, natto, and dairy products (for K2).