PROBLEM TO BE SOLVED: To provide an agent for reducing side effects of an anticancer agent. According to the present invention, there is provided an agent for reducing side effects of an anticancer agent, which contains a processed food of blowfish skin as an active ingredient. The anticancer drug can be a cytotoxic anticancer drug or a molecular target drug, and the side effects are hair loss such as hair, itching of the skin, pigmentation on the skin or swelling of the skin. Can be done. Since the side effect reducing agent of the present invention contains a processed natural product having many years of eating experience as an active ingredient, there is no concern about side effects even if it is continuously ingested, and it is advantageous in that it is highly safe. .. [Selection diagram] None【課題】抗がん剤の副作用軽減剤の提供。【解決手段】本発明によれば、ふぐ皮の加工食品を有効成分として含有する、抗がん剤の副作用軽減剤が提供される。抗がん剤は、細胞障害性抗がん剤又は分子標的薬とすることができ、副作用は、頭髪等の脱毛、皮膚のそう痒感、皮膚への色素沈着又は皮膚のはれとすることができる。本発明の副作用軽減剤は、長年食経験がある天然物の加工品を有効成分とするものであるため、継続的に摂取しても副作用の懸念がなく、安全性が高い点において有利である。【選択図】なし