Treatment of arrhythmia requires administration of an antiarrhythmic drug over a long period of time. A long-acting drug formulation for oral administration, which is safe and effective for the treatment of arrhythmia, has been provided. This long-acting antiarrhythmic formulation comprises at least one unit I and at least one unit II. The unit I comprises as an effective ingredient a pyrimidinedione derivative having antiarrhythmic action and represented by the following formula (1):
and promptly releases the effective ingredient in the stomach. On the other hand, the unit II is composed of a core, which comprises the same effective ingredient, and an enteric coat surrounding the core. The unit II promptly releases the effective ingredient in the small intestine.
治疗心律失常需要长期服用
抗心律失常药物。现已提供一种用于口服的长效药物制剂,它对治疗心律失常安全有效。这种长效抗心律失常制剂包括至少一个单元 I 和至少一个单元 II。单元 I 作为有效成分包括一种具有抗心律失常作用的
嘧啶二酮衍
生物,由下式(1)表示:
并在胃中迅速释放有效成分。另一方面,单元 II 由包含相同有效成分的核心和围绕核心的肠衣组成。单元 II 可在小肠中迅速释放有效成分。