商品名：Excenel
Binds to proteins involved in bacterial cell wall synthesis, thereby decreasing cell wall strength and rigidity and affecting cell division. Resistant to many bacterial beta-lactamases, particularly those produced by Staphylococcus spp. Uniquely among the cephalosporins, ceftiofur is metabolized to desfuroylceftiofur which is an active metabolite. Action is time-dependent.
Higher activity against many Gram-negative organisms, especially Enterobacteriaceae (not Pseudomonas) but lower activity against many Gram-positives than 1st and 2nd generation cephalosporins. Particularly useful for tortoises with bacterial respiratory tract infections (e.g. Pasteurella or Gram-negative bacteria). Use should be reserved for patients suffering from acute sepsis or serious infections where cultures are pending, other licensed preparations are not appropriate and the animal is not
劑量數字暫停提供：VetPro 的劑量改依 DRUGAPI 藥物資料庫對外的內容，DRUGAPI 目前不提供可直接計算的劑量。下方列出 DRUGAPI 的審查結論與劑量審查引用的來源；計算機可手動輸入劑量換算。
確認精確商品、製造商、申請號、鹽型、濃度、載體、容器與效價基準 確認物種、年齡、生產類別、食用動物狀態、感染部位、病原與感受性 確認使用方式、位置、單點容量、處方計畫及產品標示版本 確認過敏史、全身狀況、腎肝功能、血液學、注射處與臨床反應 確認屠宰、乳品、法域、院內權限與獸醫師診療關係 逐對核實所有併用藥與相容性，禁止由同現、類別或機轉自動建對
DRUGAPI 劑量審查引用的獸醫官方標示（各標示只適用於其產品、物種與法域，不可互換）
依出現頻率分組；嚴重副作用獨立列出，臨床上需立即辨識。