As far as prolepsis and treatment of diseases goes, recuperative plants are of specific significance in medication. The after effects of studies and research have indicated that some dynamic elements of recuperative plants are helpful for relief from discomfort and disease; research have additionally demonstrated that some therapeutic herbs have cell reinforcement and mitigating impacts in vitro. The utilization of domisticated medications has seen an extraordinary upsurge all around. In developed nations, many belittle them to a great extent because of social adequacy, accessibility and cost. Lately, be that as it may, there has been a continuous growing concern of usage of such medicinal plants. This has made a circumstance of vacillation in conversations with respect to their utilization. Some therapeutic plants are characteristically dangerous and toxic by virtue of their constituents and can cause antagonistic responses if improperly utilized. Different factors, for example, herb-medicated associations, absence of adherence to great assembling practice, poor administrative measures and contamination may likewise prompt to unhealthy and life threatening circumstances in their utilization. This article is a literature review of five most common medicinal plants which have equally toxic effects if used improperly.