Drugs used for various chronic pulmonary ailments contribute significantly to the global burden of Adverse Drug Reactions (ADRs). This cross–sectional study was conducted on   patients visiting the pulmonary department for various non–oncological Lung conditions with an aim to determine the pattern, frequency, causality and preventability of ADRs. Relevant details about the drugs, ADRs, investigations, and drug history etc. were recorded on ADR reporting form. A total of 65 patients experienced 124 ADRs over 6 month’s duration. Vomiting& nausea (35%), anorexia (23%), headache (15%), and and some serious adverse reaction like hepatitis (necessitating drug withdrawal) (17%), vision impairment (3%) were the commonest ADRs encountered. Causality analysis classified most of the ADRs (83.07%) as possible and 16.92% in probable category. Almost 67.69% reactions were definitely preventable, 32.30% reaction probably preventable. Most the ADRs recovered over time. Further extensive and long term studies are required to elicit more comprehensive and elaborate data