Learn everything about the science of sleep

Sleep Medicine has evolved as a recognized subspecialty in Western countries, but yet to be in emerging economies. General Practitioners and specialists may encounter patients with sleep problems and may often initiate therapy. It would be important to recognize sleep disorders early and treat them to prevent complications. Failure of initial treatment or lack of clarity on the exact nature of the sleep disorder should prompt referral to Sleep Medicine specialists.

The World Health Organization (WHO) is increasingly focusing on Non-Communicable Diseases (NCD) such as obesity, hypertension, diabetes, heart disease, stroke, and cancer. Sleep Disorders are at least as common as most of these and, if untreated, can also lead to some of these chronic medical problems. We at Nithra are keen on creating awareness and educating healthcare professionals on recognizing and managing common sleep disorders and offering certification programs in Sleep Medicine.

Why choose Nithra​

  • Nithra was started in 2004 as India’s first freestanding comprehensive centre for education, training, diagnosis and treatment of sleep disorders managed by an American Board-Certified Sleep Medicine specialist.
  • Nithra is a premier training institute in Sleep Medicine for general practitioners, specialists in Internal Medicine, Psychiatry, Neurology, and Otorhinolaryngology, nurses, respiratory therapists, and sleep technicians.
  • The courses are designed to provide a comprehensive approach to sleep disorders with a practical approach towards management.
  • Our short-term programs are customized to the needs of the individual based on their clinical practice and the focused upskilling requested.

Courses for doctors

Nithra was accredited by The Tamil Nadu Dr MGR Medical University for training candidates for a one-year post-doctoral fellowship in Sleep Medicine. The Fellowship program was the first University-accredited specialty training certification in Sleep Medicine but has been currently discontinued.

Fellowship in Sleep Medicine

– accredited by the Indian Sleep Disorders Association (ISDA).

Nithra has been accredited by the ISDA for training doctors for a post-doctoral fellowship in Sleep Medicine. For further details visit

Eligibility: Doctors with a Postgraduate Degree in Medicine, Chest Medicine, Psychiatry, ENT & Neurology.

For more details, contact us at +91 44 4350 2252 / +91 90949 99955 or email:

Professor K. L. Nagarajan Award

This award was introduced by Dr N. Ramakrishnan, Director, Nithra Institute of Sleep Sciences, in 2012, in the loving memory of his father, the late Professor K. L. Nagarajan. This award, along with the cash prize, is given every year to honour the best student in the “Fellowship in Sleep Medicine” exam, conducted by the Indian Sleep Disorders Association.

Short-Term Courses

These courses are aimed at helping physicians develop their knowledge regarding the basics of sleep physiology, diagnosis and management of common sleep disorders, and performance and interpretation of sleep studies. These programs are customized according to the needs of the clinician, and enrolment is limited to no more than two candidates at a time to promote an interactive learning experience.

Sleep technician training program

Online courses

Course Highlights

  • Learn from the experts – Our courses are taught and credited by Specialists with over 20 years of experience.
  • Flexible schedule and learning environment. Candidates can view modules at any time during the course period.

Diagnosis and Management of Obstructive Sleep Apnea


Enrollment form


We have collaborated with other professional societies and hosted international conferences.

Sleep Medicine 2007

This conference was held in Chennai on July 7 & 8, 2007. This third annual conference of the National Association of Professionals in Sleep Medicine was endorsed by the World Association of Sleep Medicine.

Sleepcon 2009

An international conference on Sleep Disorders organized by the Indian Sleep Disorder Association (ISDA) along with Nithra Institute for Sleep Sciences (NISS) and endorsed by the American College of Chest Physicians (ACCP) and World Sleep Federation. It addressed major issues pertaining to sleep and related problems. The three-day meet program was held from April 3 – 5, 2009, at Hotel Green Park Vadapalani, Chennai, India, and facilitated the exchange of ideas and techniques to treat sleep-related ailments among more than 250 experts in sleep medicine from India and abroad.

Sleepcon 2014

The International Conference on Sleep Disorders and 10th Conference of the Indian Sleep Disorders Association was held from April 18 – 20, 2014, at Hotel Hyatt Regency, Chennai. A special feature of this conference, a workshop on ‘Sleep Disorders in Children’, was conducted for the first time, to Paediatricians and General Practitioners who take care of children.