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[39] [73] Amphetamine and other ADHD stimulants also improve task saliency (motivation to perform a task) and increase arousal (wakefulness), in turn promoting goal-directed behavior. [39] [74] [75] Stimulants such as amphetamine can improve performance on difficult and boring tasks and are used by some students as a study and test-taking aid.
Drugs in the class of amphetamines, or substituted amphetamines, are known to induce "amphetamine psychosis" typically when chronically abused or used in high doses. [8] In an Australian study of 309 active methamphetamine users, 18% had experienced a clinical level psychosis in the past year. [9]
[21] [65] The body metabolizes methamphetamine into amphetamine (in addition to less active metabolites). A quarter of methamphetamine will ultimately become amphetamine. [66] After comparing only the common ground between dextroamphetamine and dextromethamphetamine, the latter is said to be the stronger stimulant. [21] [67]
Vyvanse (lisdexamfetamine) – a pro-drug stimulant used to treat attention deficit hyperactivity disorder and binge eating disorder; Vyvanse is converted into Dexedrine in vivo; Viibryd – an antidepressant of the serotonin modulator and stimulators class; Vivactil (protriptyline) an antidepressant also used in the treatment of nerve pain
The Drug Enforcement Administration is increasing the production limit of Vyvanse and its generic equivalents by about 24% to address the ongoing global shortage of ADHD medications.
Most stimulants are amphetamine-based (Adderall, Vyvanse) or methylphenidate-based (Concerta, Ritalin), and come in immediate-release (short-acting) or extended-release (long-acting) formulations.
[237] [238] Vyvanse is marketed as once-a-day dosing as it provides a slow release of dextroamphetamine into the body. Vyvanse is available as capsules, and chewable tablets, and in seven strengths; 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, and 70 mg. The conversion rate between lisdexamfetamine dimesylate (Vyvanse) to dextroamphetamine base is ...
Drug companies, like Takeda, the maker of Vyvanse, have until 2028. Red No. 3 is present in about a quarter of baking decorations and one-tenth of cookies sold in the US, Bloomberg reported.