Ramakrishnan, V.Sureshkumar, V.Arivuchelvan, A.Kanagarajadurai, K.Satheshkumar, S.TANUVAS2018-07-202018-07-202017http://krishikosh.egranth.ac.in/handle/1/5810061287Herbal plants and plant-derived medicine are widely used in traditional cultures all over the world and they are becoming increasingly popular in modern society as natural alternatives to synthetic chemicals. Medicinal plant materials should be collected from the appropriate place, and during the appropriate season or time period to ensure the best possible quality of both source materials and finished products.en-USVeterinary ScienceVeterinary Pharmacology and ToxicologyBook chapter