This liquid form of vitamin D3 is an easy and convenient way to take vitamin D and an excellent choice for the whole family. Each drop provides 5μg (200iu) of vitamin D3, with 600 drops per 20ml bottle, so one bottle goes a long way! The vitamin D3 is suspended in a base of virgin olive oil, which is both tasteless and odourless, making it palatable to even the fussiest of people. Lamberts have also added a mixture of natural vitamin E tocopherols to the oil, an important antioxidant that prevents the oil from going rancid. Plus this has the advantage that it is preservative free. Suitable for vegetarians.