What is levoamphetamine?
Levoamphetamine is a stimulant of the sympathetic nervous system. Its found in most amphetamine preparations, such Adderall or Benzedrine (with the exception of Dexedrine). In layman's terms, there are two different types of the molecule amphetamine, levo and dextro. Dextroamphetamine, being a central nervous system stimulant, is typically associated with the "positive" or therapeutic effects of amphetamine (mental stimulation/alertness, increased confidence, decreased drowsiness/appetite). Levoamphetamine, being a sympathetic nervous system stimulant, is mostly responsible for the adverse side effcts of amphetamine, which can become worse over a period of prolonged use, in some cases even once tolerance begins to develop.
Levoamphetamine causes sweating, racing/irregular heartbeat (tachycardia), "jumpiness" or "jitters", and cotton mouth in some users. Although levoamphetamine has not been proven to have any therapeutic potential, it is still prescribed heavily by doctors for the treatment of ADD/ADHD in the form of Adderall, which is a preparation of four amphetamine salts, two of them being pure dextroamphetamine and the others being racemic (meaning they contain about equal amounts of both dextro- and levo-amphetamine). Dexedrine and its different brand-name equivalents (dextrostat, vyvnase, etc.), are the only amphetamine-based medications that contain only pure dextroamphetamine sulfate and are generally more well-tolerated than other stimulants largely due to the absence of levoamphetamine.
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