Summit Supplements D3+K2. Our Vitamin D3-K2 supplement is a natural dietary supplement specifically formulated to help you maintain healthy bones, teeth and muscles. This supplement contains vitamin D3 and vitamin K2, two essential vitamins that work in tandem to help promote calcium absorption, reduce risk of fractures, and keep your bones strong and healthy. Our supplement is made in a GMP-certified facility and contains only natural ingredients, ensuring the highest quality and safety. Our supplement is easy to take, and is a great way to ensure you get the essential vitamins you need for optimal bone health. Helps in the development & maintenance of bones & teeth. Helps in the absorption & use of calcium & phosphorus. 180 Softgels - 180 Day Supply. Directions: 1 Softgel/Day.