Etymology: Ar, qahwah, coffee; L, potio, drink
a toxic condition caused by the chronic ingestion of excessive amounts of caffeine, which is found in coffee, tea, cola beverages, and certain stimulant drugs. Symptoms include restlessness, anxiety, general depression, tachycardia, arrhythmias (premature atrial contractions), tremors, nausea, diuresis, and insomnia. In cases of caffeine poisoning, death may result from cardiovascular and respiratory collapse. Also called caffeinism [kafē′nizəm] , caffeism [kaf′ē·izm] . See also xanthine derivative.