Tablet containing ferric citrate

A tablet comprising ferric citrate as a medicinal active ingredient and a pharmaceutically acceptable carrier, wherein the content of the medicinal active ingredient is high.

A tablet comprising ferric citrate as a medicinal active ingredient, and partially pregelatinized starch.

A tablet comprising ferric citrate as a medicinal active ingredient, and a pharmaceutically acceptable carrier, wherein the content of the medicinal active ingredient is high.

A tablet comprising ferric citrate as a medicinal active ingredient, which shows a dissolution ratio of the ferric citrate in a 30 minute dissolution time of not less than 75% in a dissolution test according to the Japanese Pharmacopoeia, 15th Edition, Dissolution Test, Paddle Method, using the Japanese Pharmacopoeia, 15th Edition Dissolution Test Method, 2nd fluid as a test solution, and at a rotation number of 50 rpm.

A method of producing a tablet, comprising a step of mixing or granulating ferric citrate as a medicinal active ingredient and partially pregelatinized starch.