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Caffeine. Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. [9][10] It is mainly used for its eugeroic (wakefulness promoter), ergogenic (physical performance enhancing), or nootropic (cognition improving) properties. [11][12] Caffeine acts by ...
The U.S. Food and Drug Administration advises that adults should not exceed 400 milligrams of caffeine in a day. ... Ingesting too much caffeine comes with serious side effects, Kitchen says. Too ...
ECA stack. The ECA stack is a drug combination used in weight loss and as a stimulant. ECA is an initialism for ephedrine, caffeine, and aspirin, with variants of it including the EC stack, which removes the aspirin for those who can not tolerate it. Dietary supplements based on or including elements of ECA were popular through the 1990s and ...
The term nootropic is derived from Ancient Greek νόος (nóos) 'mind' and τροπή (tropḗ) 'turning'. [1][5][6] The first documented use of "nootropic" in reference to substances purported to increase cognitive functions was by Corneliu E. Giurgea in 1972. [5][6][7] When researching a new compound, Giurgea found a spectrum of effects ...
Effect of psychoactive drugs on animals. Psychoactive drugs, such as alcohol, caffeine, amphetamine, mescaline, lysergic acid diethylamide (LSD), cannabis, chloral hydrate, theophylline, IBMX and others, have been studied on certain animals. It is believed that plants developed caffeine as a chemical defense against insects.
According to the FDA, most adults should stick to a daily caffeine limit of 400 milligrams, meaning a drink like Celsius consumed before a workout gets you halfway to your recommended max dose. (A ...
These drugs cause a surge in two chemicals: dopamine, the feel-good chemical, and norepinephrine, which raises our heart rate and keeps us alert. Like most drugs, flakka comes with a comedown .
Caffeinism is a state of intoxication caused by excessive consumption of caffeine. This intoxication covers a variety of unpleasant physical and mental symptoms associated with the consumption of excessive amounts of caffeine. [1] Caffeine is considered one of the most widely consumed drugs around the world. Around 80% of the world population ...