OBJECTIVE To prepare the 5 aminosalicylic acid (5 ASA) enteric time controlled released tablets with site specific drug delivery in colon.
目的制备5氨基水杨酸(5 ASA)肠溶包衣片，使药物在结肠释放。
Tongbiantong capsule, an oral preparation for colon site-specific drug delivery, is anew remedy for constipation.
新药通便通胶囊是一种治疗便秘的口服结肠靶向给药制剂。
Objective: To study of Metronidazole Colon Site-specific Drug Delivery Capsule.
前言：目的：研制甲硝唑结肠定位胶囊。
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