It is estimated that almost 400,000 species of plants grow on land, 15% of which are yet to be explored . The plants being used are called ethno botanicals and have been suggested by natural selection to be useful in therapeutic concerns with 520 varieties of ethno botanicals built . As they can be found, such resources are important because there are low side effect drugs which can be found cheap, effective and safe to use . Medicinal plants contain Secondary Metabolites which are found in parts such as leaves, stems, barks and roots and they help in the treatment and preparation of drugs . There is a chance that the pharmaceutical industry started with traditional healing use of plants instead because active compounds are extracted and then those compounds are made into drugs .