Safe Supplements
Many dietary supplements and herbal products contain water-soluble vitamins. How are these regulated?
Visit the An FDA Guide to Dietary Supplements web site
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New Roles for Vitamin A?
What are the effects of a high intake of vitamin A? What possible new roles for vitamin A have recent findings uncovered? Why might these findings be important in light of the prevalence of vitamin A deficiency worldwide?
Visit the Office of Dietary Supplements web site
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Harmful Supplements
Which supplements may be harmful and are associated with safety concerns?
Visit the Supplements Associated with Illnesses and Injuries web site
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Vitamin D
How and when was vitamin D discovered? What was the role of "man’s best friend"? Visit this Web site to find out more about the nature of vitamin D.
Visit the Vitamin D web site
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Vitamins E in 3-D
What does vitamin E look like? How was it discovered? Visit this site to see an image of this colorful vitamin under the microscope and for a thumbnail profile. The photo gallery contains photos of other vitamins too.
Visit the alpha-Tocopherol (Vitamin E) web site
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"K" is for Clotting
What does vitamin K look like under the microscope? It is a kaleidoscope of colors. Visit this site to see for yourself. When you cut yourself, clotting is crucial for your health. But after surgery and with certain illnesses, blood clots pose a danger. Vitamin K promotes clots but anticoagulant drugs fight clots. How do doctors manage these opposing forces? What tests determine a person’s blood-clotting ability? Do you understand how blood clots? If you are up to a challenge, this tutorial delivers a full explanation in all its technical detail. Be sure to check out the helpful figures.
Visit the Menadione (Vitamin K) web site
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Overdosing on Niacin
When does a vitamin become a drug? People often believe high doses of water-soluble vitamins are benign. Are they? What are the side effects of high doses of niacin?
Visit the Nicotinic Acid web site
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