BioActive D-Pearls are an excellent supplement to ensure you are getting adequate levels of vitamin D. It can be difficult to get the recommended daily amount of vitamin D sometimes in Ireland, especially during the winter months. It is essential to maintain good vitamin D levels, as it is responsible for maintaining a well functioning immune system, as well as supporting healthy teeth and bones. Just one capsule (or pearl) contains 38 micrograms of biologically active vitamin dissolved in organic olive oil to increase its absorption. This is more than enough to maintain optimum levels. The capsules are small, easy to swallow and readily dissolve in the stomach, but they can also be chewed should you have trouble swallowing.