Bulk Vitamin D3 Tablets are a specific, high-strength form of vitamin D, which promotes normal bone health and contributes to the maintenance of healthy immune function, as well as playing a role in cell division. Contain 100μg (4000IU) of Vitamin D in a highly bioavailable form, providing 2500% of your recommended intake per tablet. Fat soluble vitamin. Popular during winter when exposure to natural sunlight is lower. Winter supplement. Available in 90 Tablet and 270 Tablet packs. Suitable for Vegetarians.