商品名：Generic brands and combined with trimethoprim as
Sulfonamide antibacterial. Sulfonamides compete with para-aminobenzoic acid (PABA) for an enzyme that synthesizes dihydrofolic acid in bacteria. It is synergistic with trimethoprim. Bacteriostatic. Like other sulfonamides, it has a broad spectrum of activity, including gram-positive bacteria, gram-negative bacteria, and some protozoa. However, when used alone, resistance is common.
Sulfadiazine is used occasionally alone; however, efficacy is not established for many infections. Most often, it is used with trimethoprim to treat a variety of infections, 720 Sulfadiazine including UTIs and skin infections. (See section on trimethoprim-sulfonamides for a more complete description.)
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。
目前只有人用單方標籤、獸醫磺胺類級別資料及精確複方商品或研究可供參考；沒有足以啟用 D0618 單方動物用物種、途徑、適應症、劑量、不良反應頻率或交互作用對的公開證據。
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。