Where can I buy realgar wine in hotels, supermarkets or Chinese medicine shops in Zhuhai? Realgar wine is white wine or yellow wine brewed from ground realgar, and it is a drink of Dragon Boat Festival, a traditional festival in China. Realgar wine needs to be dried, and some are dried from the first day of May to the fifth day of May. Realgar, as a traditional Chinese medicine, can be used as an antidote and insecticide.