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2. Methylphenidate - Wikipedia

   en.wikipedia.org/wiki/Methylphenidate

   Methylphenidate. Methylphenidate, sold under the brand names Ritalin (/ ˈrɪtəlɪn / RIT-ə-lin) and Concerta (/ kənˈsɜːrtə / kən-SUR-tə) among others, is a central nervous system (CNS) stimulant used medically to treat attention deficit hyperactivity disorder (ADHD) and, to a lesser extent, narcolepsy.

3. Do energy drinks come with health risks? An expert’s warning

   www.aol.com/finance/energy-drinks-come-health...

   The U.S. Food and Drug Administration advises that adults should not exceed 400 milligrams of caffeine in a day. Two energy drinks later, and you are right at that limit.

4. Nootropic - Wikipedia

   en.wikipedia.org/wiki/Nootropic

   In 2008, stimulants, such as caffeine, were the most commonly used nootropic agent. [15] In 2016, the American Medical Association adopted a policy to discourage prescriptions of nootropics for healthy people, on the basis that the cognitive effects appear to be highly variable among individuals, are dose-dependent, and limited or modest at ...

5. Caffeine - Wikipedia

   en.wikipedia.org/wiki/Caffeine

   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 ...

6. Caffeine may be just the workout booster you need. Here ... - AOL

   www.aol.com/finance/caffeine-may-just-exercise...

   For most adults, 400 milligrams of caffeine—about two to three 12-ounce cups of coffee—a day should be safe, according to the U.S. Food and Drug Administration. Too much caffeine, though, can ...

7. Dark roasted and dangerous: Everything you should know ... - AOL

   www.aol.com/news/caffeine-intoxication-prevent...

   Caffeine intoxication occurs when a person has dangerously high levels of caffeine in their system, and symptoms can include seizures and trouble breathing. Dark roasted and dangerous: Everything ...

8. ECA stack - Wikipedia

   en.wikipedia.org/wiki/ECA_stack

   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 ...

9. Caffeine dependence - Wikipedia

   en.wikipedia.org/wiki/Caffeine_dependence

   Psychiatry. Caffeine dependence is a condition characterized by a set of criteria, including tolerance, withdrawal symptoms, persistent desire or unsuccessful efforts to control use, and continued use despite knowledge of adverse consequences attributed to caffeine. [1] It can appear in physical dependence or psychological dependence, or both.