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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.


Our work is made possible by membership fees, donations from individuals, and from the support of our generous sponsors below. About 80% of our revenue comes from memberships and donations, while 20% comes from our sponsors.

Please look through our sponsors, learn more about them and what they do. We appreciate their support!


Bio-Tech Pharmacal

Bio-Tech Pharmacal is a leading supplement manufacturer in the United States. Along with their support of the Vitamin D Council, Bio-Tech Pharmacal has worked with over 40 universities worldwide to supply vitamin D and other supplements for their clinical trials. Focusing on manufacturing high quality and accurate supplements with minimal fillers, they are true vitamin D specialists.

Website: www.biotechpharmacal.com



Sperti is an American company that manufactures specialty UV sunlamps. They make a vitamin D lamp that has been tested and approved by the FDA to make vitamin D, the only lamp to have such approval.

Website: www.sperti.com

WLS Products

WLS Products is a company in Europe that carry Bio-Tech Pharmacal supplements. If you live in Europe and want Bio-Tech Pharmacal vitamin D supplements, WLS Products is the place to go.

Website: www.wlsproducts.de

Dutch website: www.wlsproducts.nl


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