商品名：Propentofylline, Vitofyllin, Vivitonin
Propentofylline is a xanthine derivative that increases blood flow to the heart, muscle and CNS via inhibition of phosphodiesterase. It also has an antiarrhythmic action, bronchodilator effects, positive inotropic and chronotropic effects on the heart, inhibitory effects on platelet aggregation and reduces peripheral vascular resistance.
Relief of bronchospasm. Improvement of demeanour in animals. Treatment of age-related behaviour problems, in particular in combination with selegiline and dietary management for canine cognitive dysfunction. Use with care in patients with cardiac disease.
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。
本次公開官方證據只支持犬用，且 Vitofyllin／Vivitonin、50／100 mg 的最低體重、分錠與保存規則不同。未綁定具名現行產品、法域、犬體重、腎功能及分錠能力前，不提供通用計算或飼主劑量；貓用維持不支持。
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）