Healthvit Vitamin D3 5000 IU Maximum Strength 60 Tablets is a premium, vegetarian, dietary supplement for adults to build and maintain stronger bones and immunity. Regular supplementation of the capsules increases muscle strength and reduces the risk of heart disease. The capsules promotes stronger teeth and neuromuscular and immune health. Maintaining healthy levels of vitamin D has been shown to be an important part of overall health. Nature Made Vitamin D3 5000 IU Ultra Strength softgels are made of vitamin D3, the body's preferred form of vitamin D. Vitamin D helps support bone, teeth, muscle and immune health and supplements come in two forms: vitamin D2 and vitamin D3. Vitamin D3 is more effective at raising and maintaining adequate levels of circulating vitamin D in the body.