“Medicine” 的形容词形式是 “medicinal”。这个词用来描述与医药相关的、用于治疗疾病或维持健康的属性或用途。以下是 “medicinal” 的一些应用示例：

　　描述物质或产品：

　　“The plant is known for its medicinal properties and has been used in traditional remedies for centuries.”

　　“This medicinal cream is effective for treating skin irritations and minor wounds.”

　　描述用途或效果：

　　“Honey has medicinal uses; it’s an excellent natural remedy for coughs and sore throats.”

　　“Some people use medicinal herbs to help manage stress or improve sleep.”

　　描述研究或领域：

　　“She is conducting medicinal chemistry research, focusing on developing new drugs.”

　　“Medicinal plants are a key area of study in ethnobotany, exploring how different cultures use plants for healing.”

　　总之，medicine的形容词是medicinal，而使用 “medicinal” 时，通常强调的是物品、物质或活动与治疗疾病、缓解症状或促进健康有关的特点或目的。