A methylxanthine naturally occurring in some beverages and also used as a pharmacological agent. Caffeine's most notable pharmacological effect is as a central nervous system stimulant, increasing alertness and producing agitation. It also relaxes SMOOTH MUSCLE, stimulates CARDIAC MUSCLE, stimulates DIURESIS, and appears to be useful in the treatment of some types of headache. Several cellular actions of caffeine have been observed, but it is not entirely clear how each contributes to its pharmacological profile. Among the most important are inhibition of cyclic nucleotide PHOSPHODIESTERASES, antagonism of ADENOSINE RECEPTORS, and modulation of intracellular calcium handling
Caffeine -- adverse effects : Caffeine in food and dietary supplements : examining safety : workshop summary / Leslie Pray, Ann L. Yaktine, and Diana Pankevich, rapporteurs ; planning Committee for a workshop on Potential Health Hazards Associated with Consumption of Caffeine in Food and Dietary Supplements, Food and Nutrition Board, Board on Health Sciences Policy, Institute of Medicine of the National Academies
Caffeine habit -- Congresses. : Caffeinated beverages : health benefits, physiological effects, and chemistry / Thomas H. Parliment, Chi-Tang Ho, Peter Schieberle, editors
Caffeine -- Health aspects -- United States -- Congresses : Caffeine in food and dietary supplements : examining safety : workshop summary / Leslie Pray, Ann L. Yaktine, and Diana Pankevich, rapporteurs ; planning Committee for a workshop on Potential Health Hazards Associated with Consumption of Caffeine in Food and Dietary Supplements, Food and Nutrition Board, Board on Health Sciences Policy, Institute of Medicine of the National Academies
Caffeine -- Physiological effect -- Congresses. : Caffeinated beverages : health benefits, physiological effects, and chemistry / Thomas H. Parliment, Chi-Tang Ho, Peter Schieberle, editors
Caffentzis, Constantine George, 1945- : Commoning : with George Caffentzis and Silvia Federici / edited by Camille Barbagallo, Nicholas Beuret and David Harvie
Caffery, Debbie Fleming. : Defining eye : women photographers of the 20th century : selections from the Helen Kornblum collection / Olivia Lahs-Gonzales, Lucy Lippard ; with an introduction by Martha A. Sandweiss
