THE SUNSHINE VITAMIN: Helps to support teeth and bone health, provide immune support, and promote healthy muscle function. Vitamin D3 in certified liquid softgels helps to support teeth and bone health, provide immune support, and promote healthy muscle function. Get your daily dose. The Vitamin D Council recommends 5,000 IU Vitamin D daily for adults to achieve and maintain optimal levels. Our Vitamin D 5000 IU softgels are easy to swallow. Some research indicates that vitamin D3 in liquid softgel form is more bioavailable than powdered or tablet forms. These Vitamin D3 immune support and bone health supplements are gluten-free and non-GMO. Third party tested for purity and potency.