Abstract
Background and objective New drugs have revolutionized cancer care, but their high cost requires cost-effectiveness studies. However, these studies only consider optimal use, neglecting real-world wastage. We aim to assess chemotherapy drug wastage and financial loss in our adult oncology care. Methods A total of 100 adult patients attending daycare oncology were prospectively evaluated. The total dose of parenteral anticancer drug, the amount administered, and the amount of drug wasted were recorded for each patient. The economic loss estimation was done considering the unit cost for the drug. Results Our study evaluated 157 parenteral drug administrations of 10 different anticancer drugs in 100 enrolled patients. The most common diagnosis was breast cancer (39/100; 39%), and the most commonly prescribed drugs were paclitaxel (36/157; 23%) and cyclophosphamide (21/157; 13%). However, the wastage percentage varied from 6% to 35.06%, and the overall wastage estimated was 16,298 mg (20.06%) of the total drug procured. Notably, the highest proportion of drug wastage was observed for carboplatin (2,525/7200 mg; 35.06%), whereas oxaliplatin, gemcitabine, 5-FU, and cisplatin wastage were more than 20% of the ordered drug. The total cost of the chemotherapy drug procured was 7,26,005 INR (8,738.78 USD), and drug wastage amounted to 17.14% of the total drug cost, resulting in an economic loss of 1,24,485 INR (1,498.40 USD). Gemcitabine (542.86 USD), oxaliplatin (452.66 USD), and paclitaxel (286.15 USD) were responsible for the maximum cost of wastage. Conclusion Drug wastage and financial loss are significant for carboplatin, oxaliplatin, and gemcitabine, with small proportions of paclitaxel also contributing to economic loss. Possible solutions include planning pharmacy inventory for multiple vial sizes and drug-wise batching strategies to facilitate vial sharing. However, these approaches may present challenges. The pharmaceutical industry can consider initiatives such as providing varying packaging sizes to minimize drug wastage.
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