Searching for Dietary Supplements or Complementary Medicine
There are two relevant subsets in the PubMed database: Dietary Supplements and Complementary Medicine. Either or both may be searched by using PubMed Limits.
PubMed Scholarly journal articles about health and medicine, nutrition and biology
AGRICOLA Indexes articles in agriculture, including plant and animal sciences, forestry, entomology, soil and water resources, agricultural economics, agricultural engineering, alternative farming practices, and food and nutrition.
CAB Abstracts Covers agriculture. Includes animal, dairy & veterinary sciences; entomology; plant sciences; forestry; aquaculture & fisheries; farming; agricultural economics; food & human nutrition; earth & environmental sciences
Natural Standard (Integrative Medicine) Evidence-based information about complementary and alternative therapies. Contains sub-databases: Foods, Herbs & Supplements, Health & Wellness, Comparative Effectiveness, Medical Conditions, and much more.
Reaxys Reaxys provides in-depth chemical substance and reaction data particularly useful for compound synthesis
Scopus Scholarly journal articles with a heavy emphasis on science topics. A great database for high quality scholarly articles on any topic. International scope. Excellent for citation searching. 1996-present for citation searching
http://www.nal.usda.gov/fnic/foodcomp/search/ USDA National Nutrient Database
http://www.thecochranelibrary.com/view/0/index.html The Cochrane Library provides reliable and up-to-date information on the effects of interventions in health care.
http://ods.od.nih.gov/factsheets/list-all/ Dietary Supplement Fact Sheets
https://dietarysupplementdatabase.usda.nih.gov/ Dietary Supplements Labels Database
http://rdl.lib.uconn.edu/databases/1578 SciFinder Scholar Web Access a chemistry database