Pillar Performance Vitamin D3 Pillar Performance Vitamin D3 is the high-potency supplement to boost strong bones, muscle support, and immune support. It has colecalciferol 25 mcg, equivalent to vitamin D3 1000 IU. This is the best way to get vitamin D3 for people who have limited exposure to sunlight. Especially New Zealand changing seasons. Benefits of Pillar Vitamin D3 Bone Support—Boost bone health by adding calcium and phosphorus absorption. Muscle Function—Improve muscle function during training sessions or regular lifestyle. Immune Support—Vitamin D3 has an important role in regulating immune response. High Bioavailability—Cholecalciferol is the best form for absorption. How to use Take 1 capsule daily with food or as directed by your healthcare professional.