India has about 4.5 million plant species and among them, huge variety of plants has been reported to possess medicinal properties against human diseases. Although traditional medicinal healers have used medicinal plants for treatment of ailments for years, there has always been a lingering question in scientific circles about their therapeutic efficacy. As a consequence, the pharmacological activity of many medicinal plants has been studied, even though the vast majority of medicinal plants remain to be studied for their phytochemical components and pharmacological effects. Many researchers have carried out their research for antimicrobial activities of different extracts of certain plants. So, purpose of this review is to enlighten every new researcher. Present study is therefore an attempt for review on some of the medicinal plants and common weeds.
