Phytotherapies.org MONOGRAPHS: http://www.phytotherapies.org/monograph_index.cfm
Sloan Ketterling MONOGRAPHS About Herbs http://www.mskcc.org/mskcc/html/11571.cfm?herbsaccept=yes
The Drug Database, a great resource re prescription drugs, with some data on herbs also: http://www.thedrugdatabase.com/directory
Drugs.com MONOGRAPHS [mainly prescription drugs, but some herbal data also]: http://www.drugs.com
Jim Duke's Phytochemical and Ethnobotanical Databases: Ethnobotany query http://www.ars-grin.gov/duke/ethnobot.html
Herb research foundation http://www.herbs.org/
Fitovigilanza http://www.farmacovigilanza.org/fitovigilanza/index.htm
Internationale herb association http://www.iherb.org/
Natural1 http://www.natural1.it/ita/index.asp
Centro Nazionale di Epidemiologia Sorveglianza Salute http://www.epicentro.iss.it/
Università di Chieti Corso di Medicina Biointegrata http://www.medicinabiointegrata.it/
Sito Medico Scientifico del Dott.PANSINI Alfredo Dionisio http://www.mednaturalia.net/
Farmacisti del territorio
http://www.farmacistadelterritorio.it
http://digilander.libero.it/fitoamici/
http://www.phytosonline.it/
http://www.dsalud.com/fitoterapia.htm
http://www.herbworld.com/
http://www.fitoterapia.net/
http://www.erbe.it/