Yes. Vitamin D is a vital nutrient that many are deficient in, as the main way we receive it is through sunlight. Vitamin D supplementation is widely advised, but the quality of these supplements varies widely. This is in part because Vitamin D is best taken alongside Vitamin K2, which allows for it to be distributed effectively and prevents build-ups of calcium in unwanted parts of the body. LYMA’s patented forms of Vitamin D and Vitamin K2 are the best around, proven in clinical trials to be the most efficacious and bioavailable forms of both ingredients, and are included at the optimum levels.