The present invention provides a composition comprising S-adenosyl-L-methionine and at least one additive selected from a group consisting of carboxymethylcellulose, hydroxypropylcellulose, soy polysaccharides, sodium caseinate, and zein. The S-adenosyl-L-methionine is extracted from S-adenosyl-L-methionine-containing cells that are obtained by culturing a microorganism capable of producing S-adenosyl-L-methionine. The additive content in the composition ranges from 0.05 to 15 times the mass ratio of the S-adenosyl-L-methionine in the composition. The invention also provides a molded object made with the composition and a process for producing the composition. The present invention provides a composition comprising a high concentration of S-adenosyl-L-methionine that is useful as a water-soluble, biologically active material, where the composition has excellent storage stability and is absorbed well by the body, also provided is a molded object made with the composition, and a process for producing the same.
