Like pyrantel, morantel acts as a depolarizing neuromuscular blocking agent in susceptible parasites, thereby paralyzing the organism. The drug possesses nicotine-like properties and acts similarly to acetylcholine. Morantel also inhibits fumarate reductase in _Haemonchus_ spp. Morantel is slower than pyrantel in its onset of action, but is approximately 100 times as potent.
Morphine is used for the treatment of acute pain in dogs, cats, horses, swine, sheep, and goats. It may be used as a preanesthetic agent in dogs and swine. Additionally, it has been used as an antitussive, antidiarrheal, and as adjunctive therapy for some cardiac abnormalities (see doses) in dogs.
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。
先確認有效成分、鹽型、產品、濃度或含量、劑型、法域與是否仍在供應。 確認物種、體重、寄生蟲種類與成熟階段、診斷結果、當地抗藥性、飼料攝取能力及食用動物用途。 依該產品現行標示核對給藥、再處理、禁忌、監測、屠宰與乳品管制；不得由其他產品或法域換算。
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。