Antimony has few biological or medical applications. Antimony containing medicine is a kind of emetic. Antimony compounds are also used as insect antigens. Since 1919, antimony potassium tartrate (commonly known as tartar emesis) has been used as a drug to treat schistosomiasis. It was gradually replaced by praziquantel. Antimony and its compounds are used in a variety of veterinary medicines, such as Amphymalin (lithium antimony thiomalate) as a skin conditioner for ruminants. Antimony can nourish and regulate keratinized tissues, at least for animals.