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Natural Factors Vitamin D3 1000 IU, Softgels

Natural Factors Vitamin D3 1000 IU, Softgels


  • Supports healthy immune system function
  • Aids in the normal development and maintenance of bones and teeth
  • Helps reduce the risk of developing osteoporosis when combined with adequate calcium, a healthy diet, and regular exercise


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The “sunshine vitamin” aids in the absorption of calcium, helps strengthen bones and promotes cardiovascular health.

The preferred D3 form of vitamin D. Supports bone development, helps the absorption of calcium and supports nervous system health.

Since 2007, major research studies have shown that vitamin D does much more than prevent bone disease.

From strengthening immunity and reducing the risk for heart disease, to helping prevent multiple sclerosis and even certain cancers, most people can benefit from vitamin D supplementation.

The newest research suggests that low levels of the “sunshine vitamin” may be part of the reason we get more colds and flu in winter. Increasing year-round vitamin D intake could be another natural way to ward off viral and bacterial infections.

Positive research results continue to drive interest in vitamin D, and Natural Factors is responding by increasing our range of vitamin D products. A softgel format is now available, with 1,000 IU of vitamin D per softgel in a base of organic flaxseed oil, which increases the bioavailability.

This fall we will also be coming out with a liquid format, also delivering 1,000 IU per drop. The convenient liquid form is in a base of organic olive oil, and each 10 mL bottle yields 500 drops.

Vitamin D through the ages
By Dr. Kate Rhéaume

Vitamin D is one of the most fundamentally important nutrients to obtain and maintain health from conception to old age. Research is pouring in confirming that deficiency is common and it’s causing problems in all stages of life. One study has linked low vitamin D levels in mothers to a five-fold increase risk of preeclampsia, a serious complication in pregnancy that can lead to fetal death. Several others have indicated that between 55 and 70 percent of seemingly healthy adolescents may be vitamin D deficient, putting them at an increased risk of osteoporosis and other health problems later in life. In adults, low blood levels of vitamin D are associated with several types of cancer, high blood pressure, diabetes and increased risk of fractures in the elderly.

Why is this essential nutrient so elusive? After all, vitamin D can simply be synthesized in the skin by sunlight, can’t it? Unfortunately in Canada there are substantial portions of the year during which UVB rays are not strong enough to make vitamin D, even at midday. Dark-skinned individuals living in northern latitudes have an especially high risk of D deficiency as melanin slows the production of D in the skin. A trend towards low fat foods, sun avoidance and low consumption of wild-caught, oily fish (our best dietary source of vitamin D) all add up to a widespread vitamin D deficit.

Safety Issues

A recent meta-analysis of vitamin D research, published last month in Archives of Internal Medicine, concluded that vitamin D supplementation decreases mortality rates from all causes. Scientists the world over are calling for an increase in the recommended daily intake of vitamin D to at least 800 IU daily for most people. That being said, many consumers are still concerned about vitamin D toxicity. The simplest response to this fairly complicated question is that supplementation with vitamin D3 (cholecalciferol) has never produced toxicity at intentional or therapeutic doses. Vitamin D2 (ergocalciferol), on the other hand, has produced toxic symptoms at standard doses. Conclusion: make vitamin D3 part of your daily supplement routine.

Postscript: It is important to note that vitamin D forms a “trinity” with vitamins A and K. Although scientific research often examines single nutrients, the actions, benefits and limitations of vitamin D can’t truly be appreciated without considering the roles of its counterparts. Vitamin K will soon be available in Canada, so stay tuned for future columns on that important nutrient.


1. Autier, P., Gardini, S., “Vitamin D Supplementation and Total Mortality: A Meta-analysis of Randomized Controlled Trials,” Arch Intern Med., 2007;167:1730-1737.

2. Bodnar, L., et al., “Maternal vitamin D deficiency increases the risk of preeclampsia,” J. Clin. Endocrinol. Metab., doi:10.1210/jc.2007-0594 Garland, C., et al., “What is the dose-response relationship between vitamin D and cancer risk?” Nutrition Reviews 65;8 (Suppl):91-95

3. Masterjohn, Chris, “From Seafood to Sunshine: A New Understanding of Vitamin D Safety,”

Medicinal Ingredients

Each softgel contains:
Vitamin D3 (cholecalciferol)1000 IU (25 mcg)

Suggested Use: Helps maintain/support immune function for maintaining general health. Helps in the absorption and use of calcium and phosphorus, in the normal development and maintenance of bones and teeth, and in preventing vitamin D deficiency. Calcium intake, when combined with sufficient vitamin D, a healthy diet, and regular exercise, may reduce the risk of developing osteoporosis. A factor in the maintenance of good health.

Advanced Info

Natural Factors SunVitamin D3 provides a convenient daily dose of vitamin D as cholecalciferol to help support immune function and for the development and maintenance of strong bones and teeth. Vitamin D3 is the natural form of this vital nutrient and is most effective at raising blood levels of active vitamin D.

Vitamin D plays a key role in the absorption of calcium and phosphorus, two minerals that are vital for proper bone mineralization and turnover. Vitamin D is also required for the body’s innate and adaptive immune responses.

Each tablet or softgel delivers a single 1000 IU (25 mcg) dose of vitamin D3 for convenient maintenance of adequate vitamin D levels, even when dietary intake and sun exposure are lacking. When combined with an adequate calcium intake, a healthy diet, and regular exercise, vitamin D3 helps reduce the risk of developing the brittle, weak bones of osteoporosis.

Vitamin D3 1000 IU is certified non-GMO and is available as tablets or liquid softgels in 90, 180, 360, and 500 count bottles. This formula contains no artificial colours, preservatives, sweeteners, or common allergens, and is suitable for use during pregnancy and while nursing an infant.

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