Any substance that is detected by the body's immune system. Discovery of an antigen usually stimulates formation of antibodies to combat it. Antihistamine A medication that counteracts some types of allergy. Anti-inflammatory A medication that reduces the redness, heat, and swelling that occur in infections and other diseases such as rheumatoid arthritis and gout. Any substance that kills infectious agents.
Antiseptics are too strong to be swallowed or injected into the body.
Antispasmodic A medication that eases or prevents spasm. Arrhythmias Variations in the normal rhythm of the heartbeat. Aspiration Removal of liquids or gases using an instrument such as a syringe. Ataxia Lack of coordination in body movements due to nerve or brain damage. Barium enema An enema containing barium, which can be seen on X-rays.