Essay Psychoactive Drugs And Antagonist Drugs

2218 Words Nov 8th, 2016 9 Pages
A psychoactive drug is defined as “a chemical that changes mental processes and conscious awareness, mood, and perception” (Huffman & Dowdell, 2015). There are two categories of psychoactive drugs; agonist and antagonist drugs. An agonist drug is “a drug that binds to a receptor and triggers a response in the cell, it mimics or enhances a neurotransmitters effect” (Huffman & Dowdell, 2015). On the other hand, an antagonist drug is “a drug that binds to the receptor and triggers a response in the cell that blocks a neurotransmitters effect” (Huffman & Dowdell, 2015). There are four different classes of agonist drugs; stimulants, depressants, opiates, and hallucinogens. Each individual drug has certain desired effects, undesired effects, and effects of addiction and withdrawal (Huffman & Dowdell, 2015).
The Cambridge dictionary defines a stimulant as “a drug or chemical substance that encourages growth or increases activity” (Cambridge Dictionary , 2016). Some of the more common examples of stimulus drugs are meth and cocaine. People generally take a stimulant to achieve exhilaration, euphoria, excessive amounts of energy, less appetite, and increased alertness. The negative side effects of a stimulant drug are sleeplessness, paranoia, anxiety, hallucinations, psychosis, elevated blood pressure, and in extreme cases, death (Parker & Parker, 2016).
Cocaine is one of the strongest stimulus drugs there are and it can be used positively or negatively, more so negatively. Cocaine…

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