Studies show that vitamin K2 – also known as menaquinone-7 – may help the body efficiently distribute calcium. Vitamin K2 is best paired with a Vitamin D3 supplement. About Phi Naturals: The creators of Phi Naturals are nutritionists and chiropractors with a combined 70 years in health care. They understand the body's chemistry and how to optimize its natural healing processes. Our brand is founded on the principles of integrity, quality and purity. Your health and satisfaction are our #1 priority.