| Types of Drugs
Drugs are commonly classified into certain categories according to their physiological effects. All drugs may make us feel good, but they do so in different ways. Because some drugs are much more potent than other drugs, there is much variation within each category. Partly because many drugs have multiple effects, many different classifications of drugs exist. A common classification includes the following categories: depressants, hallucinogens, marijuana, narcotics, and stimulants.
Depressants
Depressants slow down the activity of the central nervous system. Depending on the specific drug, they help induce drowsiness and relaxation, and they can reduce anxiety and pain. Several types of depressants exist. Analgesics reduce pain and include over-the-counter products such as aspirin, acetaminophen (the major ingredient in Tylenol), and ibuprofen (the major ingredient in Advil and Motrin), and many prescription medicines that contain acetaminophen.Sedatives help people relax and include alcohol, barbiturates, and sleep medicines such as Sominex and Tylenol PM (both over-the-counter) and Ambien and Valium (both prescription). Large doses of depressants may lead to physical dependence and sometimes death.
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