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Vitamin D3, or cholecalciferol, is one of the two main variants of vitamin D, a fat-soluble vitamin now available to buy at Supersmart. It is present in nutritional supplements in the forms D2 (ergocalicferol) and D3. In the liver, both are converted into 25-hydroxy-vitamin D, or 25(OH)D. Over the last 10 years, research has demonstrated that vitamin D may offer a number of additional health benefits when given at the right dose.
What are the benefits associated with Vitamin D3 1000 UI?
- The role of vitamin D in bone health is long-established. One of its principal biological roles is to maintain normal calcium and phosphorus levels in the blood. By promoting calcium absorption, it helps to form and maintain strong bones.
- One scientific article hypothesized that seasonal infections such as influenza, could be due to the lower vitamin D levels typically seen during winter months, and not to an increase in viral activity.
- Low levels of 25(OH)D are associated with a higher incidence of hypertension, diabetes, obesity and elevated blood levels of triglycerides. In patients suffering from congestive cardiac insufficiency, daily administration of 2000 IU vitamin D combined with 500 mg calcium reduced levels of the pro-inflammatory cytokines partly responsible for their condition.
- Has an immunomodulatory effect.
- Reduces predisposition to diabetes in elderly people, by slowing down insulin sensitivity.
- Significantly reduces the risk of falls in elderly people.
Vitamin D3 is generally well-tolerated in adults at daily doses up to 2000 IU. Several studies suggest it may be safe even at doses up to 10,000 IU/day, although health authorities have set the safe upper limit at 1000 IU/day. Scientists, however, believe a healthy adult needs close to 1000 IU/day. This dosage is available to buy at Supersmart.
What is in Vitamin D3 1000 UI
Any questions?
Our team of nutrition experts and scientists has the answers.
This product’s softgels are of bovine origin. They are particularly suitable for supplements that require rapid solubility. Made from high-quality bovine gelatine, they are safe and effective.
january 28 2026
Impossible to give an opinion on vitamin D3
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december 14 2025
Very good
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december 7 2025
Practical to use
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october 21 2025
Too early to evaluate them but as always your products are effective and give good results.
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october 18 2025
I contacted you to ask why the dosage went from 3000 to 1000 and I didn't even get a response.
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