The present invention provides an agent for alleviating side effects caused by use of an anti-tumor agent, which contains 5-chloro-6-(2-iminopyrrolidin-1-yl)methyl-2,4(1H,3H)-pyrimidi nedione (1) represented by formula (1):
 or a pharmaceutically acceptable salt thereof. The 5-chloro -6-(2-iminopyrrolidin-1-yl)methyl-2,4(1H,3H)-pyrimidinedione or a pharmaceutically acceptable salt thereof exhibit an inflammatory-suppressing action in the digestive tract and advantageously alleviate diarrhea and loss of body weight concomitant with administration of a chemical for treating cancer without suppressing the anti-tumor effect. Thus, the compounds of the present invention are of great value as agents for alleviating side effects caused by use of an anti-tumor agent, which enable not only the chemotherapy to be continuedly carried out, but also the body exhaustion to be effectively prevented.
                            本发明提供了一种用于减轻使用
抗肿瘤药所引起的副作用的药剂,它含有由式(1)代表的5-
氯-6-(2-亚
氨基
吡咯烷-1-基)甲基-2,4(1H,3H)-
嘧啶内二酮(1):
 或其药学上可接受的盐。5-
氯-6-(2-亚
氨基
吡咯烷-1-基)甲基-2,4(1H,3H)-
嘧啶二酮或其药学上可接受的盐具有抑制消化道炎症的作用,在服用治疗癌症的
化学药物的同时可有效缓解腹泻和体重下降,而不会抑制抗肿瘤作用。因此,本发明的化合物作为减轻因使用
抗肿瘤药物而引起的副作用的制剂具有重要价值,不仅可以继续进行化疗,还能有效防止身体衰竭。