Important for healthy bones, teeth and muscles, Kirkland Signature Vitamin D3 2000 IU also supports immune system health. Kirkland Signature Vitamin D3, the form of vitamin D that your body prefers is a great way to ensure you are getting enough of this essential micronutrient to support overall health.^†

• Helps support for bone, teeth, muscle and immune health.
• Helps improve intestinal calcium absorption in the body.

Vitamin D is a fat-soluble vitamin that is unique because it is the only nutrient that can be synthesized by the skin from ultraviolet rays. In the food supply, there is a paucity of foods that naturally contain vitamin D. Instead most dietary vitamin D is consumed through fortified foods, although still in relatively small amounts. Vitamin D supplements are a prudent option to fill nutrient gaps that often exist for this crucial micronutrient.^† Vitamin D2, or ergocalciferol, is plant-derived, while vitamin D3, cholecalciferol, is animal-derived and is the body’s preferred form based on research that demonstrates its superior ability to raise and maintain vitamin D levels in the blood.1^†

As the scientific body of literature matures, the diversity of vitamin D’s influence in the body is being elucidated. Receptors for vitamin D have been discovered in cells throughout the body. Currently, the strongest science supports vitamin D’s role in bone, teeth, muscle and immune health. By enhancing calcium absorption from food and supplements and playing an important role in calcium and phosphorus homeostasis and bone remodeling processes, vitamin D supports strong bones and teeth. ^2,3

In fact, vitamin D deficiency results in bone softening and deformation, referred to as rickets in children and osteomalacia in adults. In combination with calcium, vitamin D supports bone mineralization processes, and inadequate intake of these nutrients increases one’s risk for osteoporosis, falls, and fractures.^{2 ,3} Additionally, normal muscle and immune system function require vitamin.

Naturally, few foods contain vitamin D. Fatty fish (e.g. salmon, mackerel, sardines) and fish liver oil are among the best natural sources of vitamin D₃, while egg yolks and cheese also provide small quantities. Mushrooms are a variable source of vitamin D₂, with irradiated mushrooms offering enhanced vitamin D₂ levels after exposure to UV light under controlled conditions. Fortified foods, such as cow milks, cow milk substitutes, infant formula, orange juices, breads and cereals, also provide a dietary source of vitamin D.

Nationally representative research demonstrates that the large majority (93%) of Americans are failing to consume adequate vitamin D through diet alone.⁵ As a result, approximately 1/3 of Americans have a blood level of vitamin D that is insufficient or deficient. A vitamin D supplement can help address this key nutrient gap.^4,6

Our formulation has not changed but the label may look differently now. New FDA regulations are bringing changes to the Supplement Facts panel, including updated daily values, changes to units of measure and more. To help you understand the changes we have provided both the old and new Supplement Facts panel for your comparison below.