diff --git a/backend/app.py b/backend/app.py
index c43e9cd..44e189b 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -5102,15 +5102,15 @@ def api_rx_usage():
         rx_query = text("""
             SELECT 
                 P.DrugCode as drug_code,
-                ISNULL(G.GoodsName, '알 수 없음') as product_name,
-                ISNULL(G.SplName, '') as supplier,
+                MAX(ISNULL(G.GoodsName, '알 수 없음')) as product_name,
+                MAX(ISNULL(G.SplName, '')) as supplier,
                 SUM(ISNULL(P.QUAN, 1)) as total_qty,
                 SUM(ISNULL(P.INV_QUAN, 0)) as total_dose,  -- 총 투약량 (1회복용량 x 복용횟수 x 일수)
                 SUM(ISNULL(P.DRUPRICE, 0)) as total_amount,  -- DRUPRICE 합계
                 COUNT(DISTINCT P.PreSerial) as prescription_count,
-                COALESCE(NULLIF(G.BARCODE, ''), '') as barcode,
-                ISNULL(IT.IM_QT_sale_debit, 0) as current_stock,
-                ISNULL(POS.CD_NM_sale, '') as location
+                MAX(COALESCE(NULLIF(G.BARCODE, ''), '')) as barcode,
+                MAX(ISNULL(IT.IM_QT_sale_debit, 0)) as current_stock,
+                MAX(ISNULL(POS.CD_NM_sale, '')) as location
             FROM PS_sub_pharm P
             LEFT JOIN PM_DRUG.dbo.CD_GOODS G ON P.DrugCode = G.DrugCode
             LEFT JOIN PM_DRUG.dbo.IM_total IT ON P.DrugCode = IT.DrugCode
@@ -5118,8 +5118,8 @@ def api_rx_usage():
             WHERE P.Indate >= :start_date
               AND P.Indate <= :end_date
               AND (P.PS_Type IS NULL OR P.PS_Type != '9')
-            GROUP BY P.DrugCode, G.GoodsName, G.SplName, G.BARCODE, IT.IM_QT_sale_debit, POS.CD_NM_sale
-            ORDER BY SUM(ISNULL(P.QUAN, 1) * ISNULL(P.Days, 1)) DESC
+            GROUP BY P.DrugCode
+            ORDER BY SUM(ISNULL(P.INV_QUAN, 0)) DESC  -- 투약량 기준 정렬
         """)
         
         rows = mssql_session.execute(rx_query, {