Medication used to help induce sleep (sleeping tablet). Largely synonymous with 'sleeping pill', though usage may vary by context.
不眠が続くので、医者に相談して睡眠剤を処方してもらった。
Because my insomnia continued, I consulted a doctor and was prescribed sleeping tablets.
睡眠剤には依存性のリスクがあるため、長期連用は避けるよう指導された。
I was advised to avoid long-term use of sleeping tablets because they carry a risk of dependence.
旅行の時差対策で短期間だけ睡眠剤を使う人もいる。
Some people use sleeping tablets for a short time to deal with jet lag during travel.