Senanayake, U.2010-07-062010-07-062005Vidurava, 22(2):p.21-24https://dl.nsf.gov.lk/handle/1/5554Herbal productsPlant extractsStandardizationAnalytical methodsHealth scienceLabellingConsumer protectionNatural productsChemistryHerbal products:facts and fallaciesArticle