Vitamin D3 can be synthesized by humans in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight. But, due to the winter season, weather conditions, and sun block, the body’s ability to produce optimal vitamin D levels may be inhibited.87 These factors point to the value of taking a daily vitamin D supplement.

Vitamin D has long provided significant support for healthy bone density.88-94 However, scientists have also validated the critical role that vitamin D plays in regulating healthy cell division and differentiation, and its profound effects on human immunity.95-101 These findings link a deficiency of vitamin D to a host of common age-related problems.

The current RDA for vitamin D is only 600 IU which has resulted in startling evidence of a widespread deficiency for this vitamin. Most experts in the field now recommend intakes between 1, 000 - 10, 000 IU for adults to achieve a serum 25(OH)D level above those indicative of vitamin D deficient levels, at approximately 80 nmol/L or 32 ng/mL.

Life Extension suggests that healthy adults supplement each day with 5000-8000 IU of vitamin D with the objective of achieving an optimal 25-hydroxy vitamin D blood level between 50-80 ng/mL. A vitamin D blood test can help you determine the amount of vitamin D you need to supplement to achieve an optimal level.

References available upon request

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

Serving Size: 1 Softgel

Amount Per Serving:
Vitamin D3 ... 5, 000IU
(as Cholecalciferol)

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

Non-GMO

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.

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When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.