University of Colombo
- Member of senate – from August 2011
- Member, Board of Management of Institute of the Indigenous Medicine (IIM) – from 2015
Ministry of Health
- Member of the national committee for drafting the National Medicinal Drugs Authority (NMRA) Act 2015, appointed by Minister of Health – from 2014 – 2015
- Member of the Pricing committee of the newly formulated NMRA – from 2015
- Member of the Regulations Committee of the newly formulated NMRA to draft new regulations for the NMRA Act – from 2015
- Member clinical Trials subcommittee of the Cosmetics Devices and drugs Authority (CDDA) – from 2008
- Member core group for revision of approved list of drugs of the Medical Supplies Division of Ministry of Health – from 2008
- Member, committee for revision of essential medicines list, CDDA, Ministry of Health – 2012
- Member, committee on rational use of medicines, CDDA, Ministry of Health- from 2012
- Member neutraceuticals committee of CDDA, Ministry of Health – from 2009
- Honorary consultant clinical Pharmacologist for evaluation of drugs submitted for registration to the CDDA from 2002
- Member Drugs committee of National Hospital of Sri Lanka from 2002 – 2015
- Member National Drug and Therapeutics Committee – from 2014
- Member Advisory Committee on Communicable Diseases of the Ministry of Health – from 2015
Professional Associations and Colleges
- Secretary of the Patient Community and Ethics Committee (PCEC) of the Ceylon College of Physicians, one of the committees established for achieving the objectives of the Long Term Strategic Plan (LTSP) of the CCP
- Member of Sri Lanka Medical Association (SLMA) drugs committee from 1998
- Council member Allergy and Immunology Association of Sri Lanka – from 2013 – 2015
Ceylon Medical College Council (CMCC)
- Member of CMCC as head of Department of Pharmacology – from April 2011
- Member review teams for training paramedical personnel and training institutions requesting registration – from 2008