A chemical that builds up in the brain during the day, inducing sleep, that has other important roles such as in the cardiovascular system, pain management, and disease. Caffeine blocks the action of adenosine.
A chemical believed to be a neurotransmitter in the central nervous system primarily at inhibitory receptors. Caffeine may act by antagonizing the normal action of on its receptors.
A drug used to treat an irregular heartbeat.
Compound that is a major constituent of many biologically important molecules, including the hereditary materials DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), the energy-storage compounds ATP (adenosine triphosphate) and AMP (adenosine monophosphate), and many enzymes; also used as an anti-arrythmic drug.
A highly potent vasodilator used to perform cardiovascular perfusion studies without having the client exercise.
A nucleotide containing adenine and ribose.
Adenosine is a cerebral biochemical that engenders a soporific outcome. However, caffeine averts the generation of adenosine.
A nucleoside that serves various physiological functions in energy transfer and molecular signaling. It acts as a constituent of RNA and functions as an inhibitory neurotransmitter, promoting sleep.