Make sure you’re getting enough vitamin D
Vitamin D is a fat-soluble vitamin that isn't easily obtained through diet alone. Vitamin D helps preserve youthful cognitive function, supports bone and immune system health, helps maintain already-healthy blood pressure, encourages a healthy inflammatory response and promotes endothelial function. We recommend between about 5,000 IU to 8,000 IU of vitamin D3 a day.
4 Reasons Why Everyone Should Take Our Vitamin D Supplements
- Supports bone health & immune system function
- Promotes cardiovascular & endothelial health
- Helps maintain already-healthy blood pressure
- Helps maintain youthful, healthy cognitive function
Our Recommendation
Compare Formulations
We offer vitamin D in various dosages, from 25 mcg (1,000 IU) up to 175 mcg (7,000 IU). Our vitamin D supplements are available in flavored and unflavored liquids, convenient softgels and as part of these multi-nutrient formulations.

Vitamin D3
Your skin manufactures vitamin D when exposed to sunlight, but that shouldn’t be your only source. A vitamin D supplement goes a long way: We recommend about 125 mcg (5,000 IU) to 200 mcg (8,000 IU) of vitamin D3 a day.
See Vitamin D3 Products
Vitamin D plus other nutrients
With multi-nutrient formulas, you get all the health benefits that come with vitamin D supplementation, plus other beneficial ingredients, such as calcium, vitamin K and iodine. These formulas provide support for healthy bone density, arterial health and more.
See Vitamin D plus other nutrients ProductsVitamin D helps preserve youthful cognitive function, supports bone and immune system health, helps maintain already-healthy blood pressure and more. If your multivitamin already delivers 1,000–3,000 IU of vitamin D, a high-potency vitamin D3 supplement would be ideal.
We’ve combined vitamin D3 with other nutrients, such as Sea-Iodine™ to support thyroid health, vitamin K to promote bone and arterial health, and calcium citrate to support healthy bone density.
Related Products
Related Health Information
Essentials Quiz
Answer a few questions to choose the right supplements
Why Life Extension?
100% Satisfaction Guarantee
Full one-year, no-hassle returns, money-back guarantee.
Highly Recommended
98% of our customers recommend us to family and friends. Life Extension is proud to be recognized as the #1 Catalog/Internet Merchant — 5 Time Winner.†
Complimentary, Personalized Guidance
Medical doctors, nutritionists & other health professionals are passionate about providing personalized solutions to help you achieve optimal health.
Efficacious Formulas
40 years of research dedicated to bringing you premium, scientifically-validated formulations.
Product Transparency
99% of our products are manufactured in the U.S, and a Certificate of Analysis is available for every product we produce.