Specialized good manufacturing practice (GMP) guidelines for the manufacture of herbal medicinal products address manufacture of products from material of plant origin, which may be subject to contamination and deterioration and may vary in its composition and properties. Furthermore, procedures and techniques often used in the manufacture and quality control of herbal medicines, are substantially different from those used for conventional pharmaceutical products. These specialized GMP guidelines were adopted by the WHO Expert Committee on Specifications for Pharmaceutical Preparations at its Thirty-fourth meeting and supplement the existing WHO core GMP guidelines. These guidelines were subsequently published in Quality Assurance of Pharmaceuticals: A compendium of guidelines and related materials, Volume 2, Good manufacturing practices and inspection. This publication reproduces guidelines related to good manufacturing practices (GMP) and to the inspection of pharmaceutical manufacturing anddrug distribution channels. Provides guidance covering all aspects of good manufacturing practices and includes important texts on inspection.