Review of Natural Products found in the Stat!Ref database
Micromedex also has a limit for Alternative Medicine (AltMedDex and AltCareDex databases).
Computer Access to Research on Dietary Supplements (CARDS)
Database of federally funded research projects pertaining to dietary supplements.
Dietary Supplements Label Database
National Center for Complementary and Integrative Health (formerly NCCAM)
PubMed dietary supplements subset from the NIH Office of Dietary Supplements and National Library of Medicine. The subset is designed to limit search results to citations from a broad spectrum of dietary supplement literature including vitamin, mineral, phytochemical, ergogenic, botanical, and herbal supplements in human nutrition and animal models. Replaces the International Bibliographic Information on Dietary Supplements (IBIDS) Database.
MedlinePlus Herbs and Supplements: Browse by first letter of herb or supplement
About Herbs, Botanicals and Other Products - These monographs from Memorial Sloan Kettering focus on herbs and supplements used by cancer patients.