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Vitamin D3

Vitamin D3 for Bone Density-and Immune Function Support

Item #01753 25 mcg (1.000 IU) 90 Softgels 1 per serving In stock

Vitamin D3 can:

  • Support healthy bone density
  • Promote healthy cell differentiation and immune function
  • Support adequate Vitamin D levels during winter

Sustain adequate Vitamin D3 levels throughout the year with Vitamin D and support bone density and immune function.

€ 7.09
Buy 4 get 10% discount

Product Details

Health Benefits at a Glance:

Vitamin D3 can help sustain adequate Vitamin D levels throughout the year, which can be difficult for the body to produce - especially during the winter. A supplement of Vitamin D3 can support healthy bone density and promote healthy cell differentiation and immune function for better health.

Why it Works:

Vitamin D3 can be synthesized by humans in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight. Because of weather conditions during the winter season and sunblock, the body’s ability to produce vitamin D levels within the normal range may be inhibited.  A supplement of Vitamin D can support healthy bone density and promote healthy cell differentiation and immune function for better health. These factors indicate the value of taking a daily vitamin D supplement.

Vitamin D provides significant support for healthy bone density [1-7]. Furthermore, scientists have validated the critical role that vitamin D plays in regulating healthy cell division and differentiation, as well as its profound effects on human immunity [8-14]. These findings link a deficiency of vitamin D to a wide variety of common age-related problems.

The Science Behind the Product:

Even if we are able to make some amount of vitamin D in our bodies, we often still need extra amounts of vitamin D to maintain adequate levels This additional amount of vitamin D can come from our diet, sun or supplements

LifeExtension recommends that healthy adults supplement 5,000 IU – 8,000 IU vitamin D3 on a daily basis. It is also recommended to take a 25-hydroxy vitamin D blood test, 3 months after one has started taking daily vitamin D3 supplementation of the dose described above. Finally, LifeExtension advice that one adjusts the daily vitamin D3 dosage, so that one’s optimal blood levels will be between 50-80ng/mL on a year-round basis.

When vitamin D is ingested in the diet or produced in the skin, the liver and kidneys convert vitamin D to its active form known as 1,25-dihydroxyvitamin D, or vitamin D3. Virtually every tissue type in your body has receptors for vitamin D, meaning that they all require vitamin D for adequate functioning. Besides its role in bone health, vitamin D is responsible for regulation of genes that control cell growth and development, immune function and metabolic control [15, 16].

How to Use:

  • Take one (1) softgel daily with food, or as recommended by a healthcare practitioner.

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Supplement Facts

Serving Size 1 softgel

Servings Per Container 90

Amount Per Serving:

Vitamin D3 (as cholecalciferol) 1000 IU

Other Ingredients: extra virgin olive oil, medium chain triglycerides oil, gelatin, glycerin, purified water, rosemary extract.


Dosage and Use:

Suggested daily intake is one (1) softgel or as recomemended by your medical practitioner.


Individuals consuming more than 2,000 IU/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement.

Do not exceed 10,000 IU per day unless recommended by your doctor.

Vitamin D supplementation is not recommended for individuals with high blood calcium levels.


Keep out of reach of children.

Do not exceed recommended dose.

Do not purchase if outer seal is broken or damaged.

If you are undergoing treatment for a medical condition or if you are pregnant or lactating, please consult your medical practitioner first.

A food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Store tightly closed in a cool, dry place.

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Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews.