Function: Bone and joint health Ingredients: Vitamin D3, K2 Directions: Take two (2) capsules once daily Shipping: Ships within 48 hours on weekdays Shelf life: 2 years Multivitamins (vitamin K2 and vitamin D3) support strong joints, internal circulation, dental health and the immune system. Healthy Bones, Teeth, Immune System - Vitamin D supports healthy bones and teeth. Vitamin D and vitamin K both support bone maintenance and are very compatible. This formula uses powerful vitamin D (cholecalciferol) D3 and premium vitamin K2 (menadione) MK-7. A PERFECT MATCH: Vitamins K2 and D3 are the perfect combination. Most people are aware of the benefits of vitamin D, but many people don't realize that vitamin D requires vitamin K2 to be most effective.