Vitamin D3 plays an integral role in regulating the neuromuscular and immune systems, as well as mood and sleep. It’s also a critical hormone precursor that supports new cell growth and bone formation.
Natural Stacks Vitamin D3 features:
Supports immune function and bone health†
Regulates over 1,000 genes involved in human health†
Promotes healthy aging†
Supports general health and well-being†
Take 1 softgel per day, or as directed by a healthcare practitioner.
U.S.A. manufactured in a cGMP facility. Natural Stacks proudly uses only the highest quality ingredients.
Vitamin D3 is a fat-soluble nutrient and one of the 24 micronutrients necessary for human survival. The vitamin plays an integral role in regulating the neuromuscular and immune systems, as well as mood and sleep. It is also a critical hormone precursor that supports new cell growth and healthy bone formation.
Your body naturally converts cholesterol to vitamin D with the help of UV light from sun exposure. However, most people are unable obtain adequate amounts of D3 from sunlight alone.
Found in cells throughout the brain and body, Vitamin D plays an integral role in regulating the neuromuscular and immune systems [1, 2], as well as mood and sleep . It’s also a critical hormone precursor that supports new cell growth  and bone formation [5, 6].
Vitamin D is essential to maintaining health and optimizing performance. Unfortunately it’s only found in a few foods and often in very small amounts. Because of its vital importance and lack of dietary sources, humans evolved to be able to make Vitamin D on their own.
Ultraviolet (UV-B) radiation from sunlight penetrates uncovered skin and naturally gets converted into Vitamin D. Season, time / length of day, cloud cover, smog, sunscreen, and darkness of skin all affect the amount of UV exposure and rate of Vitamin D synthesis . It’s been shown that cloud cover and pollution can reduce UV energy by up to 60%, and UV-B radiation doesn’t penetrate glass so exposure to sunlight through a window does not produce Vitamin D .
It’s estimated that 1 billion worldwide suffer from Vitamin D deficiency or insufficiency . Symptoms of inadequate levels of Vitamin D include bone pain and muscle weakness, but the symptoms can be subtle and go undetected in the initial stages. Deficiency has been associated with increased risk of autoimmune, cardiovascular, and infectious diseases .
Natural Stacks™ Vitamin D3 provides the highly bioavailable form of natural Vitamin D (Cholecalciferol).
To ensure optimal absorption of this fat-soluble vitamin we suspended it in the healthiest fat on the planet - organic cold pressed coconut oil. The natural fatty acids in coconut oil aid the transport of Vitamin D into the bloodstream for fast and effective results.
Most companies use "proprietary blends" so they don't have to tell you the amount of each ingredient in their formulas. At Natural Stacks we believe it's your right to know exactly what you're putting into your body. We proudly publish our innovative formulas and ingredient suppliers in an open source format.
If for whatever reason you're unsatisfied with your Natural Stacks products, you can return the product within 30 days for a full refund. We also provide actionable tips on our blog and newsletter for you to maximize your performance with our premium products.
1. Nimitphong, H., & Holick, M. F. (2011). Vitamin D, neurocognitive functioning and immunocompetence. Current Opinion in Clinical Nutrition & Metabolic Care, 14(1), 7-14.
2. O’Brien, M. A., & Jackson, M. W. (2012). Vitamin D and the immune system: beyond rickets. The veterinary journal, 194(1), 27-33.
3. Berk, M., Sanders, K. M., Pasco, J. A., Jacka, F. N., Williams, L. J., Hayles, A. L., & Dodd, S. (2007). Vitamin D deficiency may play a role in depression. Medical hypotheses, 69(6), 1316-1319.
4. Samuel, S., & Sitrin, M. D. (2008). Vitamin D's role in cell proliferation and differentiation. Nutrition reviews, 66(s2).
5. Cranney, A., Horsley, T., O'Donnell, S., Weiler, H., Puil, L., Ooi, D., ... & Fang, M. (2007). Effectiveness and safety of vitamin D in relation to bone health. Evidence report/technology assessment, (158), 1.
6. Holick, M. F. (2006). The role of vitamin D for bone health and fracture prevention. Current osteoporosis reports, 4(3), 96-102.
7. Grant, W. B., & Holick, M. F. (2005). Benefits and requirements of vitamin D for optimal health: a review. Altern Med Rev, 10(2), 94-111.
8. Holick, M. F. (1985). The photobiology of vitamin D and its consequences for humans. Annals of the New York Academy of Sciences, 453(1), 1-13.
9. F Holick, M. (2011). Vitamin D: evolutionary, physiological and health perspectives. Current drug targets, 12(1), 4-18.
10. Holick, M. F., & Chen, T. C. (2008). Vitamin D deficiency: a worldwide problem with health consequences. The American journal of clinical nutrition, 87(4), 1080S-1086S.