High strength vegan vitamin D3, providing 4000iu vitamin D per capsule Effective - Vitamin D helps form and maintain strong bones, helps maintain blood levels of calcium and phosphorus and is required for the normal functioning of the immune system Optimum support - Our highest strength vitamin D, providing 4000iu vitamin D3 in a simple, one a day capsule Studies show that many individuals don't have sufficient blood levels of vitamin D3, so a higher supplemental dose may be recommended to increase and maintam blood levels Advanced - Our vegan D3 is sourced from algae Flexible - Easy to take in a simple one a day capsule No unnecessary additives or allergens Environmentally friendly - Recyclable packaging Trusted - We've been helping to shape a healthier society for over 30 years Suitable for vegetarians and vegans 30 days' supply at 1 capsule per day