Resumen
Objective: To elaborate the ABC Curve of medicines in a Basic Health Unit of the city of Belém-PA, showing its relevance for efficient stock control. Methods: It’s a descriptive cross-sectional study that used information from drug management utilized at BHU, through data collected from monthly drug requests from September 2017 to August 2018. Data were analyzed using Microsoft Office software Excel® 2013. Results: of the 268 standardized drugs, 105 were absent. Of the 112 in the primary care inventory, class A accounted for 18.42% of these drugs representing 69.76% of the costs, class B 21.05% of the items and represented 19.25% of expenses, C 60.53% of items with 10.99% of costs. In the urgency and emergency of the 51 drugs, classes A and B corresponded to 14.29% of drugs and class C to 71.43%. The financial demand was: 68.93% (A), 20.26% (B) and C of 10.81%. Conclusion: It´s important to start investing drug management, to rationalize resources, pharmacological therapy, and to avoid breaking the stock.