To provide a storage-stable lactam body production of -aminobutyric acid derivative at a storage stability of 1.0% or less through a shelf life, having sufficient hardness, good dissolution property and satisfactory content uniformity, , Sticking, lamination, etc., can be stably produced with good yield, bitterness of the -aminobutyric acid derivative is masked, it is smaller than the capsule formulation, it hardly adheres to the throat, it is difficult to adhere to the throat A compressed solid formulation containing a -aminobutyric acid derivative which is easy to break up, is provided.SOLUTION: Compressed solid preparation not containing cellulose type additives other than hydroxypropyl cellulose.BACKGROUND OF THE INVENTION【課題】使用期限を通じて、保存安定でγ-アミノ酪酸誘導体のラクタム体生成を1.0%以下に保つことができ、十分な硬度と良好な溶出性と良好な含量均一性を有し、キャッピング、スティッキング、ラミネーションなどの打錠障害を生じず、歩留まり良く安定的に生産することができ、さらに、γ-アミノ酪酸誘導体の苦みがマスクされ、カプセル剤よりも小さく、のどに付着しにくく、飲みやすい、分割可能な、γ-アミノ酪酸誘導体を含有する圧縮固形製剤を提供する。【解決手段】ヒドロキシプロピルセルロース以外のセルロース系添加物を含有しない圧縮固形製剤。【選択図】図1
