K.Aruna Anushia and Dr. S. Arumuga Perumal 06 02 net of Things IoT is a new and fast growing technology in which everything smart objects and smart devices are connected to the internet for effective communication between these connected things Internet of things serves as a catalyst for the healthcare and plays very important role in wide range of healthcare monitoring applications Networked sensors devices either worn on the body or embedded in living environments make possible the gathering of rich information to evaluate physical and mental health condition of the patient by collecting body temperature blood pressure sugar level etc Communicating this collected information to the doctor making accurate decision on the data collected and notifying the patient is the challenging task in the Internet of things In this paper author focus on review of IoT based Healthcare System and outline about Opportunities and Challenges for Internet of Things based Patient Health Monitoring System Copyright (c) World Journal of Pharmaceutical Seiences. All rights reserved 2026