For example, a metabolic improver containing an alkalizing agent such as an acidosis improving agent or a urinary alkalizing agent as an active ingredient and having effects such as improvement of insulin resistance, improvement of pituitary and adrenal functions, and reduction of visceral fat accumulation is provided. To be done.例えばアシドーシス改善剤や尿アルカリ化剤などのアルカリ化剤を有効成分として含み、インスリン抵抗性の改善、脳下垂体や副腎機能の改善、内臓脂肪蓄積の減少などの作用を有する代謝改善剤が提供される。