What is the best source of vitamin D3 -- from lanolin in sheep's wool or from fish oil?
Learn more about vitamin D3 sources, such as lanolin (from wool) and fish oil, as well as their prices and their effects. ConsumerLab's answer explains.
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Our Members Asked:
Are vitamin D oral sprays more effective than vitamin D pills or drops?
Reviewed and edited by Tod Cooperman, M.D.
Answer:
There are several vitamin D oral sprays marketed. They can be as effective as a pill or liquid drop and there is preliminary evidence suggesting they can be more effective than a pill (suggesting direct absorption in the mouth - which could help people with malabsorption conditions), but this is not well-established. However, because they tend to be a bit expensive, they are not necessarily cost effective. Get the details in the Vitamin D Supplements Review >>Join today to unlock all member benefits including full access to all CL Answers and over 1,300 reviews.
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Related CL Answers (5)
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Henry8029
November 1, 2015Vitamin D sprayed inside cheeks 2X more response than taken orally – Oct 2015
Published late 2015 - after the Consumerlab report was written
Excellent two way cross over study
Details at: http://vitamindwiki.com/tiki-index.php?page_id=7056
Also - sprays get vitamin D into the blood stream 4X to 8X faster than if vitamin D is taken orally.
ConsumerLab.com
November 9, 2015Hi Henry - Regarding the two studies you mention, we have written about the first and pointed out a potential weakness with that study. The second study, about vitamin D getting into the blood stream faster if taken orally, was not a study in humans, but a lab experiment using oral tissue from deceased pigs. Better research is needed.