Ultra D3 capsules 5000 IU 90 capsules is a dietary supplement based on vitamin D3. Vitamin D3, derived from lanolin which is a substance of natural origin, contributes in particular to the normal functioning of the immune system, to normal bones and to normal muscle function. Its innovative, practical & nomadic format will allow you to take it everywhere. Ultra D3 capsules 5000 IU 90 capsuless used for natural defenses and muscle joint health in adults and who have vitamin D deficiency.