Provided are tablets which does not undergo cracking or disintegration by absorption of moisture and therefore have excellent storage stability despite the fact that the tablets contain free arginine at a high concentration, and which can be produced in a simple manner. Tablets containing free arginine at a concentration of as high as 5% by mass or more relative to the whole amount of the tablets can be produced by performing the compression molding of free arginine that is dried by a spray drying method.本發明提供一種錠劑，其係含高含量游離精胺酸，同時可抑制吸濕造成的龜裂或崩壞，保存安定性優異，且可簡便地製造。將藉由噴霧乾燥法乾燥的游離精胺酸壓縮成形，而得到以相對於錠劑的總量為5質量%以上的高含量含有游離精胺酸的錠劑。
