The invention relates to a microencapsulated amino acid composition and methods of manufacturing this composition. Amino acids, such as branched-chain amino acids, have low water solubility, poor hydrophilicity, and poor stability. Amino acids are thus difficult to be digested and absorbed. Consequently amino acids can hardly meet human needs of consuming. This microencapsulated amino acid composition that can quickly disperse and dissolve in cold water, resulting clear solution. The method includes (1) adding coating agents, wetting agents, or other excipients to the amino acid mixture, (2) modifying the surface of microencapsulated particles to considerably accelerate the wetting speed. In this composition, the weight ratio of amino acids and excipients is from 100/0.1 to 100/10.0. This invention delivers advantages over conventional products, such as instant dispersion and dissolution in water, transparent solution, no precipitation, no floating, no foam, increased shelf life, more convenient, and faster oral absorption. Therefore, the present invention is a good solution to the problems of amino acids, resolving the problems related to prior products. The present invention does not have unpleasant taste or odor that prior amino acids bring to consumers. The method of the present invention is simple and easy to be industrialized.
