• Vitamin D3 (cholecalciferol) is likely more effective at restoring blood levels than the D2 form (ergocalciferol).
• Cholecalciferol has also been shown to increase the proportion of the active form of vitamin D compared to ergocalciferol.
• 2,500 IU of vitamin D per capsule allows for easy daily dosing
• Easy-to-swallow, highly bioavailable capsule
• In an organic flaxseed oil base for enhanced intestinal absorption

Vitamin D is a hormone widely recognized as being essential for many body systems and physiological processes. It is also perhaps one of the most common nutritional deficiencies worldwide, with insufficient or deficient levels in nearly 40% of Canadians. Vitamin D is essential for proper immune system function and may reduce the risk and/or severity of infections, particularly those of the respiratory tract, and especially in individuals prone to infections. Many recent studies have associated lower levels of this vitamin with an increased risk of cardiovascular disease, including hypertension, peripheral vascular disease, and coronary artery disease.

Vitamin D is necessary to help absorb dietary calcium, and it is also important for bone health and muscle strength. Vitamin D has been associated with physical fitness and overall performance, with lower levels linked to frailty, especially in the elderly. Supplementation at clinically relevant doses has been associated with a well-established reduction in osteoporotic fractures. Given that virtually every tissue in the body possesses a vitamin D receptor, it is difficult to overestimate its importance. Many practitioners recommend supplementation to achieve blood levels of 50 to 80 nmol/L of 25-OH-vitamin D. This level often requires doses of 1,000 to 2,000 IU per day, and more for individuals with common genetic variants affecting vitamin D metabolism.