車前子殼 (Ispaghula/Psyllium)
瀉藥 - 容積性
車前子殼（通常稱為洋車前子）是一種容積性瀉藥，提取自車前草種子的外殼。在獸醫學中用於管理便秘、改善糞便性狀並增加膳食纖維攝取。 **臨床提示：** 因為它會吸收大量水分形成黏稠的凝膠，必須確保動物能自由飲水，以防止腸道阻塞。
作用機制: Acts as a **bulk-forming agent** that absorbs water in the gastrointestinal tract → increases **faecal mass** → mechanically stimulates **peristalsis**. It is moderately fermentable in the colon, and the resultant **volatile fatty acids** exert an osmotic laxative effect.
給藥途徑
PO
禁忌症
- Intestinal obstruction
- Fecal impaction
- Dysphagia
- Severe dehydration
不良反應
- Flatulence
- Abdominal bloating
- Esophageal or intestinal obstruction (if administered without adequate water)
藥物相互作用
- Oral medications (general) · May delay or reduce the gastrointestinal absorption of concurrently administered oral drugs. Administer at least 2 hours apart. · moderate
監測
- Stool consistency and frequency
- Hydration status
- Signs of abdominal discomfort or bloating
過量
Overdose is unlikely to cause systemic toxicity as the drug is not absorbed. However, excessive ingestion without adequate water may lead to **severe bloating**, **constipation**, or **gastrointestinal obstruction**.
VetSheet 藥物參考供持牌獸醫專業人員作臨床決策輔助之用,不能取代專業判斷或廠方最新藥品說明書。