Objective: Aim of the study was to assess medication adherence to understand various determinants of medication non-adherence in inpatients at a tertiary care hospital, Coimbatore, India.

Methodology: It is a prospective observational study conducted in the inpatient department at a Tertiary Care Teaching Hospital. Asthma or COPD patients were randomly recruited over six months from the ward's clinics. The inhalation technique was assed utilizing the questionnaires there were 11 steps for MDI and 12 steps for MDI + spacer each correct technique conveyed a score of 1 and the wrong technic conveyed 0. The adherence to the inhaler technique was assessed utilizing the recipe correct dose/incorrect dose*100 and the purposes behind nonadherence were additionally noted.

Result: In our study out of 120 patients 53.3% were diagnosed with COPD and 46.7% were asthmatic, and 10.8% asthmatics and 20% COPD patients were endorsed with budesonide MDI. About 10% of asthmatics and 9.1 COPD patients have endorsed with budesonide MDI+ spacer. About 4.1% asthmatics and 2.5% COPD patients were endorsed with salbutamol MDI. About 17% asthmatics and 10% COPD patients were endorsed with MDI ipratropium and 8% asthmatics and 12.5% COPD patients were recommended with ipratropium MDI+ spacer. At the point when the knowledge concerning the use of inhalers was surveyed utilizing standard questionnaire, which had 11 steps for MDI and 12 steps for MDI+ spacer every questionnaire had scoring of 0 addressing not playing out the progression, 1 addressing following the progression the scores were high after pharmacist intervention when contrasted with before pharmacist intervention

Conclusion: The current outcomes feature the requirement for pharmacist interventions pointed toward improving adherence to inhalers in COPD and asthmatic patients.

Keywords: adherence, chronic obstructive pulmonary disease, Inhalers, Asthma