Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used recreationally as a cognitive enhancer, increasing alertness and attentional performance. Caffeine acts by blocking binding of adenosine to the adenosine A1 receptor, which enhances release of the … See more Medical Caffeine is used in: • Bronchopulmonary dysplasia in premature infants for both prevention and treatment. It may improve weight gain during therapy and reduce the … See more Consumption of 1–1.5 grams (1,000–1,500 mg) per day is associated with a condition known as caffeinism. Caffeinism usually combines caffeine dependency with … See more Pure anhydrous caffeine is a bitter-tasting, white, odorless powder with a melting point of 235–238 °C. Caffeine is moderately soluble … See more Physical Caffeine in coffee and other caffeinated drinks can affect gastrointestinal motility and gastric acid secretion. In postmenopausal women, high caffeine consumption can accelerate bone loss. Acute ingestion of … See more Caffeine is a substrate for CYP1A2, and interacts with many substances through this and other mechanisms. Alcohol See more Pharmacodynamics In the absence of caffeine and when a person is awake and alert, little adenosine is present in CNS … See more Around thirty plant species are known to contain caffeine. Common sources are the "beans" (seeds) of the two cultivated coffee plants, See more WebGerman English Contextual examples of "Koffein" in English. These sentences come from external sources and may not be accurate. bab.la is not responsible for their content. Ich …
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Webcaffeine noun [ U ] uk / ˈkæf.iːn / us / ˈkæf.iːn / a chemical, found for example in tea and coffee, that is a stimulant (= something that makes people more active) 咖啡因,咖啡鹼 … Web2 days ago · or caffein (ˈkæfiːn , ˈkæfɪˌiːn ) noun. a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many … force everest
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Webcaffeine ( ˈkæfiːn; ˈkæfɪˌiːn) or caffein n (Elements & Compounds) a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of … Webcaffeine noun [ U ] us / kæˈfin, ˈkæf·in / a chemical found in coffee and tea that is a stimulant (= something that tends to make you more active) (Definition of caffeine from … force excavating