n.缬草属植物；缬草根茎采制之镇静剂
Numerous studies have found that valerian improves deep sleep. 大量研究已经发现缬草改善深度睡眠质量。
Valerian is one of the most common sleep remedies for insomnia. 缬草是治疗不眠症的最常见的补眠措施之一。
