This Research book involves Information regarding selected Apocynaceae family members. Specially it shows the review of previous work done by the researchers regarding antimicrobial activity. Authors are tried to report the Antimicrobial Activity of selected plants like Vinca, Plumeria, Thevetia and Nerium. This book will be beneficial to the researchers for their research of Antimicrobial Activity. Authors would like to thank all the Teaching and Non-teaching staff members of the Botany Department, Gujarat University.