Nature Made® Vitamin D 1000 IU Liquid SoftGels are made of Vitamin D-3, the body’s preferred form of Vitamin D. Maintaining healthy levels of Vitamin D in your body has been shown to be an important part of your overall health. Nature Made® Vitamin D 1000 IU Liquid SoftGels are made of Vitamin D-3, the body’s preferred form of Vitamin D. Nature Made Vitamin D-3 1000 IU liquid softgels are perfect for the healthy adult looking for an easy to swallow supplement to meet the commonly recommended daily Vitamin D dosage. • Vitamin D supports teeth, bone and immune health • Ensuring healthy levels of Vitamin D in your body helps support heart health • Vitamin D supplements come in two forms: Vitamin D2 and Vitamin D3, Vitamin D3 is more effective for maintaining adequate levels of Vitamin D in the body