- Austin Nutritional Reference Guide for Vitamins
Contains an overview and information on specific vitamins.
- Best Multivitamins
Provides reviews and recommendations of the best multivitamins with an emphasis on natural and organic multivitamins.
- Glaceau Vitaminschool
Contest featuring 50 Cent and Jorge Cruise invites youth to submit their favorite healthy recipes for a chance to win a scholarship.
- Linus Pauling Institute: Vitamins
Information about vitamins and minerals, including function, deficiency, the RDA, safety, and more.
- MedlinePlus: Vitamin and Mineral Supplements
Recent news and research, overview articles, and more about vitamins.
- Merck Manual: Vitamin Deficiency, Dependency, and Toxicity
Describes major vitamin deficiencies, dependency, and toxicity as well as its symptoms, diagnosis, and treatment. Also includes laboratory findings for vitamin deficiency.
- Mskcc.org: About Herbs, Botanicals, and Other Products
Offers evidence-based information on herbs, botanicals, vitamins, and other products. From Memorial Sloan-Kettering Cancer Center's Integrative Medicine Service.
- Sundown Naturals - Letter Vitamins
Online site offering information about letter vitamins, facts and news, availability, and more.
Provides summary of scientific journal literature regarding frequently-used vitamins, nutritional supplements, and herbs. Also includes daily values and vitamin-drug and herb-drug interactions.
- Vitamins & Nutrition Center
Guide to vitamins and nutrition including articles, research, and more.
- Vitamins Diary
Descriptions and information on various vitamins, amino acids, minerals, herbs, and nutritional supplements, and their possible uses.
- Vitamins, Minerals and Supplements
Using supplements wisely, herb database, and nutrition expert Q&A from the Mayo Clinic.
- WEGO Health: Vitamins and Supplements
Expert-rated resources on vitamins and supplements, including how to find ones that meet your needs, benefits, risks, and use tips.