Physiomance D-Nat 2000 20ml is a food supplement rich in 100% natural vitamin D3, the most bioavailable form for the body.Vitamin D3, also known as the sunshine vitamin, has as its main function to ensure and maintain the ossification of the skeleton, it also ensures the normal absorption and utilization of calcium and phosphorus and participates in the normal functioning of the immune system.1 drop = 50.0 µg (2,000 IU**). 1 drop = 50.0 µg (2,000 IU**).1 bottle = 700 drops.Formulated without dyes, preservatives or nanoparticles.Made in Europe.Food supplements should never replace a healthy and balanced diet.