Another agent that is used in combination with Levodopa and Carbidopa is Entacapone, which inhibits peripheral COMT and thus just like Carbidopa, it prolongs the time that Levodopa is available to the brain.

另一种与左旋多巴和卡比多巴联合使用的药剂是恩他卡彭，它能抑制外周血细胞凋亡，因此就像卡比多巴一样，它延长了左旋多巴对大脑有效。