Medicinal plants and their preparations in the European market: why has the harmonization failed? The cases of St. John's wort, valerian, ginkgo, ginseng, and green tea

Publication date: Available online 24 November 2020Source: PhytomedicineAuthor(s): Anna Rita Bilia, Maria do Céu Costa
Source: Phytomedicine - Category: Drugs & Pharmacology Source Type: research