This book is on ovulation induction and controlled ovarian stimulation which is an integral part of most infertility therapies like intrauterine insemination and in vitro fertilization. It would deal with causes of anovulation and indications for ovarian stimulation. This book deals with basics as well as current and advanced practices. It provides a step by step protocol for ovarian stimulation. It gives a clear understanding of the science of reproductive endocrinology behind these stimulation protocols and roadmaps the latest therapies, defining their current relevance to treatment. Besides the practical guidance it also covers latest research work done in this field. In this day of information overload it is an attempt to integrate relevant information in a manner which can be applied in infertility practice in evidence based manner, making it rational, logical and rewarding for the reader.