Ginger - University of Maryland Medical Center review of the traditional and modern uses of Zingiber officinale. Includes dosages, contraindications, and research findings. - http://www.umm.edu/altmed/ConsHerbs/Gingerch.html
PDR Health Notes - Information about Ginger including uses, dosage, studies, and cautions. - http://www.pdrhealth.com/drug_info/nmdrugprofiles/herbaldrugs/101230.shtml