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    Glossary – L

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    the synthetic narcotic drug levo-alpha-acetyl-methadol, used in the treatment of heroin abuse. Brand name is Orlaam.


    legal actions that make legal what was previously a criminalized behavior, product, or condition. See also: decriminalization

    Licit drug
    a drug that is legally available by medical prescription in the jurisdiction in question, or, sometimes, a drug legally available without medical prescription.

    a feeling you are “going to faint.” Lightheadedness is medically distinct from dizziness, unsteadiness, and vertigo. See: Dizziness , Unsteadiness, and Vertigo .


    Limbic system
    the areas of the brain involved with emotions and memory.

    Lithium carbonate
    a psychiatric drug used in the treatment of mania or bipolar disorder.

    Lognormal distribution
    refers to the theory, first propounded by Sully Ledermann in the 1950s, that alcohol consumption is distributed among the drinkers in a population according to a lognormal curve varying between populations on only one parameter, so that a large proportion of alcohol consumption is by a small proportion of drinkers. Although Ledermann’s particular formulation is now discredited, it is considered generally true that, in societies where alcohol is available freely on the market, drinkers are distributed along a spectrum of levels of alcohol consumption in a unimodal curve skewed to the left (referred to as the unimodal distribution of consumption, which also characterizes consumption of most consumables). The focus on the distribution of consumption in the population became associated with renewed attention to alcohol control measures to reduce levels of alcohol problems in a population; hence, this public-health oriented perspective is sometimes termed the distribution-of consumption theory.

    Lysergic acid diethylamide (LSD)
    a synthetic, serotonin-related hallucinogenic drug.

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