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.
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.
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.
may 25 2026
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may 17 2026
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may 4 2026
I take 2000 IU of Vit D3 every day so I am never deficient.
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april 6 2026
Very good product, I recommend it.
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february 24 2026
very good product to recommend
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Hello Mrs. LANCKMAN,
Thank you for taking the time to write and share your experience.
Have a nice day,
Valérie - Supersmart