Royal Canin, for adult cats who want to maintain a healthy stomach and stool, unopened. Royal Canin generally cannot be purchased unless prescribed by a veterinarian these days. It seems to be available on Amazon and Rakuten as long as stock lasts, so I highly recommend this to those who have cats that use this food (*´˘`*) ☆It seems delicious, as my cat ate it with gusto (*^^*) Reference price, Amazon: 9200 yen (tax included)