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You are here: OUSL / Faculty of Health Sciences / Dept. of Pharmacy

Ms. R. B. Janani Buddhika

M.Phil. (Peradeniya), PGD in AOC (Colombo), BPharm (USJ)

Senior Lecturer (Grade II)

Head of the Department

Department of Pharmacy
  • Colombo Regional Center, Department of Pharmacy, Faculty of Health Sciences, The Open University of Sri Lanka
  • Office: 0112881131, Ext: 6600
  • hdpharma@ou.ac.lk

Education

MPhil Post Graduate Institute of Science, University of Peradeniya, Sri Lanka.     September 2019

PG.Dip (Post Graduate Diploma in Applied Organic Chemistry) University of Colombo,  Sri Lanka. September 2015

BPharm University of Sri Jayewardenepura, Sri Lanka,  December 2010

 

Employment History

  • Senior Lecturer (Gr-II) at the Department of Pharmacy, Faculty of Health Sciences, The Open University of Sri Lanka, 2019 September to date.
  • Head/ Department of Pharmacy, Faculty of Health Sciences, The Open University of Sri Lanka, 2020 August to date.
  • Lecturer (Probationary) at the Department of Pharmacy, Faculty of Health Sciences, The Open University of Sri Lanka, 2012 February to 2019 September.
  • Coordinator- BPharm Hons Programme, Department of Health Sciences, Faculty of Natural Sciences, The Open University of Sri Lanka, June 2011 to June 2015.
  • Lecturer (Temporary) at the Department of Health Sciences, Faculty of Natural Sciences, The Open University of Sri Lanka, 2011-2012.
  • Demonstrator, Pharmacy Unit, Department of Medical Education & Health Sciences, Faculty of Medical Sciences, University of Sri Jayewardenepura, 2011.

Pharmacognosy, Pharmacy Practice

Drug development, Pharmacy Practice

FMU4302 Pharmacognosy II

FMU5210 Research Methodology

FMU5208 Literature Review

FMU6806 Research Project

Course material published by The Open University of Sri Lanka for the second-year Bachelor of Pharmacy students.

  • 4 Chapters in FMU4302 Pharmacognosy II
  • 2 Chapters in FMU5406 Pharmaceutical Marketing, Management, and Pharmacoeconomics

 

    1. Janani Buddhika R.B., Pathirana D.P.C.K., Chathumali V.G.I., Wickraramasinghe N.D.D., Knowledge, attitudes, and practices among oncology pharmacists on cytotoxic drug reconstitution in Sri Lanka: A cross-sectional study. Journal of Oncology Pharmacy Practice. 2025;0(0). doi:10.1177/10781552251361801
    2. Rathnaweera Bopage Janani Buddhika, Anura Abeysinghe Jayawardhana Yapa, Nadeesha Dilmi Dias Wickramasinghe, Chinta Abayawardana, Dedunu Dias, Rohini Fernandopulle. Availability, Stock-outs and Warehouse Facilities of Essential Medicines at Regional Medical Supplies Divisions in Sri Lanka: a Multicentre, Cross-sectional Study. Accepted for publication in Ceylon Journal of Science, Sri Lanka on 18.08.2025.
    3. Shashika R. Rajakulasooriya, S. S. Neluka Fernando, T. D. Chinthika P. Gunasekara, Pradeep M. Jayaweera, K. G. Upul R. Kumarasinghe, H. Harshani P. M. J. Thabrew, Enoch Chan, R. B. J. Buddhika, G. G. Yashoda H. Weerasinghe & K. A. A. Ureshani Karunarathna. In vivo toxicological evaluation of 3-benzylideneindolin-2-one: antifungal activity against clinical isolates of dermatophytes. BMC Pharmacol Toxicol 26, 16 (2025). https://doi.org/10.1186/s40360-025-00850-1
    4. Dhanushi T Welideniya, Ph.D; Adeesha Saseenda Jayathilaka, BS; Anjana Delpe Acharige, BS; Upamalika Samanthi, MS; Umayangani Wanninayake, Ph.D; Shashika Sevvandi Perera, BS; Weranga Rajapaksha, BS; Chamod C Fernando, BS; Madhavi Hewadikaram, BS; Janani Buddhika, BS; Pivini Gunasekara, BS; Veranja Karunaratne, D; G. A. J. Amaratunga, PhD, “Practical and Scalable Synthesis of Beclomethasone Dipropionate”, Steroids, 2021; 108948, ISSN 0039-128X, https://doi.org/10.1016/j.steroids.2021.108948

 

Peer Reviewed Journal Publications

  1. R. B. J. Buddhika, J. P. S. Rasangika, W. Pathirana, M. D. J. Wijayabandara, S. D. M. Chinthaka. Journal of Pharmaceutical Society of Sri Lanka, 2011; 1 (1): 10-13. Pharmacopoeial Examination of Calcium Carbonate Deposits in Sri Lanka. https://www.researchgate.net/publication/284162335_Pharmaceutical_Evaluation_of_Calcium_Carbonate_Deposits_in_Sri_Lanka

Oral Presentations

  1. Nalina, P., Wijewardhana, L.K.D.N., & Buddhika, R.B.J. Challenges in Pharmaceutical Care Provision Among Government Pharmacists and Dispensers in Northern Province, Sri Lanka: Findings from a Cross-Sectional Survey. Proceedings of the 1st Research Conference of the Faculty of Health Sciences,

The Open University of Sri Lanka (OuFHSRC 2025). https://drive.google.com/file/d/1MTOWdRhy5HZam2DQiIxmHHjJvL6k6f1c/view

 

  1. Perera K.A.G.D., Anjalee J.A.L., Maddumage, L.K., & Buddhika R.B.J., The Discrepancy Between Knowledge and Practices of Insulin Use: A Cross-Sectional Study in a Selected Divisional Hospital in Colombo District. Proceedings of the 1st Research Conference of the Faculty of Health Sciences,The Open University of Sri Lanka (OuFHSRC 2025). https://drive.google.com/file/d/1MTOWdRhy5HZam2DQiIxmHHjJvL6k6f1c/view

 

  1. Fernando, W.Y.C., Prasadi, G.A.M., & Buddhika, R.B.J., Community Pharmacists’ Perspectives  and Practices on Providing Emergency Contraceptive Pills: A Review. Proceedings of the 1st Research Conference of the Faculty of Health Sciences,The Open University of Sri Lanka (OuFHSRC 2025). https://drive.google.com/file/d/1MTOWdRhy5HZam2DQiIxmHHjJvL6k6f1c/view

 

  1. Srimalie M.G.A., Abeykoon A.M.A.U., Buddhika R.B.J. Patterns and prevalence of off-label use of psychotropic medicines for children and adolescents attending psychiatric clinics at National Hospital Galle. International Research Conference in Health Sciences (IRCHS) 2025. FAHS, USJ. 28th March 2025. https://health.sjp.ac.lk/rchs/wp-content/uploads/2025/04/Proceedings-IRCHS-2025-ED.pdf

 

  1. Ekanayaka B.S., Fernando W.T.S., Buddhika R.B.J. Knowledge, attitudes, and practices on antiretroviral therapy (ART), among HIV patients attending the sexually transmitted disease (STD) clinics in Kalutara District. International Research Conference in Health Sciences (IRCHS) 2025. FAHS, USJ. 28th March 2025. https://health.sjp.ac.lk/rchs/wp-content/uploads/2025/04/Proceedings-IRCHS-2025-ED.pdf

 

  1. P.C.K. Pathirana, V.G.I. Chathumali, N.D.D. Wickraramasinghe, R.B.J. Buddhika. Anticancer drug handling practices among oncology pharmacists in Sri Lanka: A cross-sectional study. 17th KDU International Research Conference 2024, 26th and 27th September 2024. https://irc.kdu.ac.lk/2024/publications/fahs.pdf

 

  1. W.M.J.P. Jayasekara, R.B.J. Buddhika, W.M. Chathurani, N.D.D. Wickramasinghe. Oral presentation, Open University Research Sessions 2023 (OURS), 10th November 2023. “Knowledge and attitudes on patient counselling among pharmacists at state hospitals in Central Province, Sri Lanka”. https://ours.ou.ac.lk/wp-content/uploads/2023/11/OURS-2023-Conference-Proceedings.pdf

 

  1. P.S.S.M. Dalpadadu, R.B.J. Buddhika, D.R. Herath, A. Nadeshkumar. Quality of a Commonly Manipulated Oral Dosage Form Given to Children. Peradeniya University International Research Sessions (iPURSE) 2023. https://site.pdn.ac.lk/ipurse/2023/docs/iPURSE%20Proceedings%202023.pdf

 

  1. Chulani Herath, H.P.K. Amarasinghe, P.M.S.S. Kumari, K.K.D.S. De Silva, E.B.S. Samarakoon, K.A. Sriyani, D.T. Wijeratne, B.J. Buddhika, H.U.C. Nuwansala, R.G.L. Rathnayake, K.A.I. Priyangika, N. R. Kuruppu, R. S. R. Rajakulasooriya, R. A. N. Dilsha. Students’ drop-out rates in health sciences degree programmes at the Open University of Sri Lanka. Open University International Research Session (iOURS), 10th November 2022. https://ours.ou.ac.lk/wp-content/uploads/2022/12/ID-158_STUDENTS-DROP-OUT-RATES-IN-HEALTH-SCIENCES-DEGREE-PROGRAMMES-AT-THE-OPEN-UNIVERSITY-OF-SRI-LANKA.pdf

 

  1. K.D.S.V., Dilsha. R.A.N., Tanuja. R.W.N., Buddhika. R.B.J., & Samarasekara. P.W.G.D.P. (2017). Government pharmacists’ perception on continuing education. Open University Research Session (OURS), 16th November 2017, 181-185. https://ours.ou.ac.lk/wp-content/uploads/2018/01/OURS2017-all-part-3-27-31.pdf

 

  1. B.J. Buddhika, S.S.N. Fernando and T.D.C.P Gunasekara. Knowledge, attitudes, and practices on antibiotic use of a student population attending Open University of Sri Lanka (OUSL): A descriptive study on undergraduate nursing students. Annual Academic Sessions 2015- The Open University of Sri Lanka. https://ours.ou.ac.lk/wp-content/uploads/2017/04/NS15-08-F.pdf
  2. S. K. Peiris, H. V. L. Rangika, G. M. N. K. Siriwardena, R. B. J. Buddhika and B. S. S. De Silva. Use of Contraceptives among mothers during the first year after their first delivery. Annual Academic Sessions 2014- The Open University of Sri Lanka.
  3. G. P. R. C. L. Hungampola, S. M. C. Samarakoon, D. A. C. D. Perera, H. A. M. S. Perera, B. S. S. De Silva and R. B. J. Buddhika. Factors influencing for gastritis: a preliminary study for assessment of knowledge, attitudes, and practices among patients with gastritis. Annual Academic Sessions 2013- The Open University of Sri Lanka. https://ours.ou.ac.lk/wp-content/uploads/2017/05/NSC-37-Formated-checked.pdf

 

 

Posters

 

  1. Rathnaweera Bopage Janani Buddhika, P.N. Rathnasekara, J.A.L. Anjalee, “Knowledge and adherence to oral anticancer medicines among oncology patients: insights from the National Hospital, Galle, Sri Lanka”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Social and Administrative Pharmacy- Pharmacy Education (2025) 25(4) 9. https://doi.org/10.46542/pe.2025.254.saps.175

 

  1. Rathnaweera Bopage Janani Buddhika, Liyana Lekamalage Kaumudie Satheeka Jayasiri, Chinta Abayawardana, Jayaweera Arachchige Lakshika Anjalee. “From dispensing to direct patient care: Hospital pharmacists’ perspectives on clinical pharmacy transition in Sri Lanka: A study protocol”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Hospital pharmacy- Pharmacy Education (2025) 25(4) 80. https://doi.org/10.46542/pe.2025.254.hps.1121

 

  1. Wickramasinghe Mudhiyanselage Sobhan Indika Kumara Wickramasinghe, Liyana Lekamalage Kaumudie Satheeka Jayasiri, Rathnaweera Bopage Janani Buddhika, Sakeena Hameem. “Patient practices and attitudes toward disposal of unused pharmaceuticals: A cross-sectional study at District General Hospital, Kegalle, Sri Lanka”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Pharmacy practice research- Pharmacy Education (2025) 25(4) 50. https://doi.org/10.46542/pe.2025.254.ppr.1108

 

  1. Liyana Lekamalage Kaumudie Satheeka Jayasiri, Nadeesha Dilmi Dias Wickramasinghe, Rathnaweera Bopage Janani Buddhika. “Unveiling job satisfaction among state hospital pharmacists: Insights from selected teaching hospitals in Colombo District, Sri Lanka: A study protocol”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Hospital pharmacy- Pharmacy Education (2025) 25(4) 55 – 56. https://doi.org/10.46542/pe.2025.254.hps.1121

 

  1. N.F Ashka, Nanayakkara Muhandiramalaya Yasa Kalum Bagyawantha, Rathnaweera Bopage Janani Buddhika. “Knowledge, attitudes, and practices of community pharmacists on patient counselling: A cross-sectional study in Gampaha District, Sri Lanka: A study protocol”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Pharmacy practice research- Pharmacy Education (2025) 25(4) 48. https://doi.org/10.46542/pe.2025.254.ppr.1108

 

  1. Piratheepan Nalina, L. K. D. N. Wijewardhana, Rathnaweera Bopage Janani Buddhika.“Knowledge and practices of government pharmacists and dispensers regarding pharmaceutical care in Northern Province, Sri Lanka: A cross-sectional study”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Pharmacy practice research- Pharmacy Education (2025) 25(4) 48- 49. https://doi.org/10.46542/pe.2025.254.ppr.1108

 

  1. Samadhi Uthpala Getamurutha, Janani Buddhika Rathnaweera Bopage, Nadeesha Dilmi Dias Wickramasinghe. “Do demographic factors affect medication knowledge and adherence among bipolar disorder patients? Insights from outreach clinics conducted by National Institute of Mental Health, Sri Lanka”. 83rd FIP World Congress of Pharmacy and Pharmaceutical Sciences in Copenhagen, Denmark, 31 August to 3 September 2025. Pharmacy practice research- Pharmacy Education (2025) 25(4) 107. https://doi.org/10.46542/pe.2025.254.ppr.1108

 

  1. Ujithasiri K.P.T., Chathumali V.G.I., Buddhika R.B.J. Knowledge, attitudes, and practices on the use of insulin among patients attending the diabetes clinic of Police Hospital Colombo. International Research Conference in Health Sciences (IRCHS) 2025. FAHS, USJ. 28th March 2025. https://health.sjp.ac.lk/rchs/wp-content/uploads/2025/04/Proceedings-IRCHS-2025-ED.pdf

 

  1. Rajakulasooriya R.S.R., Gunasekara T.D.C.P., Fernando S.S.N., Jayaweera P.M., Kumarasinghe K.G.U.R., Thabrew H.H.P.M.J., Buddhika R.B.J., Chan E. In-vitro antifungal activity of 3-benzylidene-indolin-2-one: A preliminary investigation International Conference on Medical Sciences 2024. 24th & 25th October 2024, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka, https://drive.google.com/file/d/1QBMoQW1EySVs4Dwti2VvkDyn594R4lvW/view

 

  1. S.S. De Silva, L.K.D.N. Wijewardhana, W.M. Chathurani, N.D.D. Wickramasinghe, R.B.J. Buddhika. Antibiotics utilization patterns of neonates in the pediatric baby care unit at Lady Ridgeway Hospital, Sri Lanka. 17th KDU International Research Conference 2024, 26th and 27th September 2024. https://irc.kdu.ac.lk/2024/publications/fahs.pdf

 

  1. B.J. Buddhika, Safeer NM, N.D.D. Wickramasinghe, Chinta Abayawardena, Rohini Fernandopulle, “Pharmaceutical Inventory Management Practices across Different Levels of Government Health Care Institutions (GHCIs) in Batticaloa District, Sri Lanka”. 82nd FIP World Congress of Pharmacy and Pharmaceutical Sciences, 01st to 04th September 2024. 82nd FIP World Congress 2024, South Africa, Social and Administrative Pharmacy- https://pharmacyeducation.fip.org/pharmacyeducation/article/view/3046/1958

 

  1. Nanlath Gamage H.D., Buddhika R.B.J., International Research Conference in Health Sciences (IRCHS) 2024. “Knowledge, attitudes, and practices of pharmacists on cold chain management of vaccines at Regional Medical Supplies Divisions (RMSDs) of Sri Lanka”. http://health.sjp.ac.lk/rchs/wp-content/uploads/2024/05/IRCHS-2024.pdf

 

  1. Safeer N.M., Wickramasinghe N.D.D., Buddhika R.B.J., International Research Conference in Health Sciences (IRCHS) 2024. “Availability and stock levels of essential medicines in government healthcare institutions in Batticaloa District, Sri Lanka”. http://health.sjp.ac.lk/rchs/wp-content/uploads/2024/05/IRCHS-2024.pdf

 

  1. Getamurutha G.G.S.U., Buddhika R.B.J., Wickramasinghe N.D.D., International Research Conference in Health Sciences (IRCHS) 2024. “Relationship between medication knowledge and medication adherence in patients with bipolar disorder. Evidence from an observational study from outreach clinics conducted by National Institute of Mental Health, Sri Lanka”. http://health.sjp.ac.lk/rchs/wp-content/uploads/2024/05/IRCHS-2024.pdf

 

  1. Bandara W.E.W.M.R.T.W., Buddhika R.B.J., Wickramasinghe N.D.D., International Research Conference in Health Sciences (IRCHS) 2024. “Knowledge, attitudes, and practices on insulin therapy and number of experienced hypoglycemic episodes during past month among insulin users attending diabetic clinic, Teaching Hospital, Peradeniya”. http://health.sjp.ac.lk/rchs/wp-content/uploads/2024/05/IRCHS-2024.pdf

 

  1. Rathnaweera Bopage Janani Buddhika, Ms. Walabaduge Mahesha Chathurani, Ms. Jayasekera R.W.M.J.P., Ms. Wickramasinghe N.D.D., Hospital pharmacists counselling practices in Sri Lanka: Do pharmacists need institutional support?, 81st FIP World Congress 2023, Brisbane, Australia. Pharmacy Education (2023)23(6)158-191, https://doi.org/10.46542/pe.2023.236.158191

 

  1. Rathnaweera Bopage Janani Buddhika, Mr. Yapa A.A.J., Ms. Wickramasinghe N.D.D., Ms. Chinta Abayawardana, Prof. Rohini Fernandopulle. A Comparative Study of Pharmaceutical Storage Facilities and Stock Levels of Essential Medicines in Government Healthcare Institutions of Different Settings in a Rural District in Sri Lanka: Study Protocol. 81st FIP World Congress 2023, Brisbane, Australia. Pharmacy Education (2023)23(6)435-509, https://doi.org/10.46542/pe.2023.236.435509

 

  1. Wickramasinghe N.D.D., Ms. Bandara W.E.W.M.R.T.W., Ms.  Jayasundara M., Ms. Samarakoon S.M.S.,  Ms.  Rathnaweera Bopage Janani Buddhika. Does insulin-related hypoglycemia depend on the level of the hospital? A study protocol from three government hospitals in Sri Lanka. 81st FIP World Congress 2023, Brisbane, Australia. Pharmacy Education (2023)23(6)350-423, https://doi.org/10.46542/pe.2023.236.350423

 

  1. Samarakoon D.D.N.W., Kumara R.S., Buddhika R.B.J., Jayasuriya J.A.B.N., Pharmacognostical evaluation and antibacterial activity of the flowers of Impatiens balsamina. L (Kudalu) Proceedings of the Annual Scientific Sessions 2021, Pharmaceutical Society of Sri Lanka., September 25, 2021

 

  1. Janani Buddhika, Gayan Priyadarshana, Dhanushi Welideniya, Nedra Karunaratne and Veranja Karunaratne, Eutectic compositions of resveratrol for oral administration. Asian Symposium on Medicinal Plants, Spices and Other Natural Products 2018, p239.
  • Life member, Pharmaceutical Society of Sri Lanka.
  • Registered Pharmacist (Sri Lanka Medical Council)
  • Member, International Pharmaceutical Federation (FIP)

• Faculty Research Fund/ Faculty of Health Sciences, Role: Principle Investigator, Period: 2023 – 2024
• Faculty Research Fund/ Faculty of Health Sciences, Role: Principle Investigator, Period: 2020 – 2022
• Faculty Research Fund/ Faculty of Health Sciences, Role: Principle Investigator, Period: 2016 – 2017
• Faculty Research Fund/ Faculty of Health Sciences, Role: Co-Investigator Period: 2016 – 2017
• National Science Foundation, Title: Overseas Special Training Scholarship Period: 2018
• National Institute for Materials Science (NIMS), Tsukuba, Japan Title: NIMS Internship Program Fellowship