title: Herbal reference standards.
abstract: This review describes the current definitions and regulatory requirements that apply to reference standards that are used to analyse herbal products. It also describes and discusses the current use of reference substances and reference extracts in the European and United States pharmacopoeias.
authors.affiliation: PhytoLab GmbH & Co. KG, Vestenbergsgreuth, Germany. michael.schwarz@phytolab.de
authors.forename: Michael
authors.initials: M
authors.lastname: Schwarz
authors.forename: Bernhard
authors.initials: B
authors.lastname: Klier
authors.forename: Hartwig
authors.initials: H
authors.lastname: Sievers
mesh_terms: D019587:Dietary Supplements / Q000592:standards; D005060:Europe; D033161:Government Regulation; D007880:Legislation, Drug; D010602:Pharmacopoeias as Topic; D028321:Plant Preparations / Q000737:chemistry / Q000592:standards*; D011786:Quality Control; D012015:Reference Standards; D014481:United States
chemical_list: D028321:Plant Preparations