Published: 2019-08-28

Drug utilization pattern among geriatrics according to anatomical therapeutic chemical and defined daily dose classification in a tertiary care hospital

T. Muneswar Reddy, Thammi Setty Durga Prasad, Allikesam Hemalatha, Vanam Chanukya, Bandi Lakshmi Sirisha


Background: This study was conducted to determine the drug utilization pattern among geriatric inpatients in general medicine department of the hospital.

Methods: An observational, prospective study was conducted for a period of six months (November 2016 to April 2017) among 200 geriatric patients; demographic details, education, occupation, diagnosis and drug details were recorded. The drugs were categorized by anatomical therapeutic classification (ATC) and defined daily dose (DDD) was calculated. The World Health Organization (WHO) prescribing indicators were assessed.

Results: The majority of the patients (59%) were in age group of 60-69 years. Cardiovascular diseases were common among geriatrics. Most commonly prescribed drug was Pantoprazole (81.7%). Drugs were assigned with ATC/DDD codes according to the guidelines of WHO. Drugs prescribed by their generic names were 56.64% and 43% of drugs that were included in the National Essential Medicines List.

Conclusions: Clinical pharmacist have to collaborate and work together with physicians in selecting and adjusting the dose among geriatric population in order to reduce development of potential adverse drug reactions, serious drug related complications and drug interaction.


Drug utilization study, Geriatric population, ATC, DDD, Drug use, Essential drug list

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