Chapter Concepts1. Psychoactive compounds affect the central nervous system by acting as stimulants, hallucinogens, or depressants.
2. Most psychoactive drugs are alkaloids that have been employed by humanity for millennia.
3. Although many of these compounds have legitimate medicinal value in the proper dosage, the abuse of psychoactive drugs has led to devastating physiological, emotional, economic, and societal consequences.
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2003 McGraw-Hill Higher Education