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.

Lead antimony alloy plates used in lead-acid batteries. Alloys of antimony with lead and tin can be used to improve the performance of welding materials, bullets and bearings. Antimony compounds are important additives for chlorine and bromine containing flame retardants, which are widely used. Antimony has also been widely used in emerging microelectronic technologies, such as AMD graphics card manufacturing.