Provided is a cultured milk for promoting elevation of the amino acid concentration in the blood, by which the elevation of the amino acid concentration in the blood of a subject can be promoted. By causing a subject to consume the cultured milk having a milk protein concentration of 1.9 mass% or higher, elevation of the amino acid concentration in the blood of the subject can be promoted.本發明提供一種可促進對象之血中胺基酸濃度的上升的用於促進血中胺基酸濃度上升之發酵乳。藉由使對象攝取乳蛋白質濃度為1.9質量%以上的發酵乳，可促進對象之血中胺基酸濃度的上升。
