A nutritional composition for oral use which contains a mixture of (a) three branched amino acids including valine, leucine and isoleucine, or (b) three branched amino acids including valine, leucine and isoleucine together with an amino acid other than branched amino acids, and in which the branched amino acids are not granulated and the branched amino acids have such a grain size as passing a 106 mum-sieve at a ratio of 10% by weight or less.
