Abstract: An object of the present invention is to provide a curcumin-containing solid composition to be used as a composition for treating or preventing diseases and symptoms that benefit from curcumin absorption into cells. The object is achieved by a solid composition comprising: (1) curcumin; (2) hydrophilic polymer; and (3) at least one nonionic surfactant selected from the group consisting of polyglycerol fatty acid esters, sucrose fatty acid esters, and lecithins.

Abstract: An object of the present invention is to provide a curcumin-containing preparation that enables efficient curcumin ingestion. The object is achieved by a curcumin-containing preparation comprising amorphous curcumin and being substantially free of crystalline curcumin, wherein, in an infrared absorption spectrum with curve fitting by a Voigt function, a ratio (Cp/Ap) is 0.25 or less, the ratio (Cp/Ap) being a ratio of peak intensity Cp having the maximum in the range of 1508.00 to 1513.00 cm?1 to peak intensity Ap having the maximum in the range of 1513.50 to 1517.00 cm?1.