Methods of sedating a patient undergoing critical care treatment using intravenous gaboxadol or a pharmaceutically acceptable salt thereof are provided. Parenteral formulations for critical care sedation using intravenous gaboxadol or a pharmaceutically acceptable salt thereof are provided. The parenteral formulations are particularly well suited for use in critical care sedation.本發明提供使用靜脈內加波沙朵(gaboxadol)或其醫藥上可接受之鹽使正在接受重症治療之病患鎮靜之方法。本發明提供使用靜脈內加波沙朵或其醫藥上可接受之鹽用於重症鎮靜之非口服調配物。該等非口服調配物特別適用於重症鎮靜中。