Drug Categories

Overview

Commonly misused and abused drugs are divided into seven main categories. Understanding these categories is essential for recognizing their effects, risks, and potential for misuse.

• Stimulants

• Depressants

• Opioids

• Cannabis

• Hallucinogens

• Inhalants

• Anabolic Steroids

Stimulants, Depressants, and Opioids

Stimulants

Stimulants are drugs that increase activity in the central nervous system, leading to increased alertness, attention, and energy.

• Common Drugs: Caffeine, nicotine, cocaine, amphetamines

• General Effects:

  • Increased heart rate and blood pressure

  • Increased energy and alertness

  • Decreased appetite

• Example: Amphetamines are used medically for ADHD but can be misused for their stimulating effects.

CNS Depressants

CNS depressants slow down brain activity, resulting in calming effects and reduced anxiety.

• Common Drugs: Barbiturates, benzodiazepines

• General Effects:

  • Reduced anxiety and muscle tension

  • Slowed breathing and heart rate

  • Impaired coordination

• Example: Benzodiazepines are prescribed for anxiety but can be dangerous when misused.

Opioids

Opioids are drugs derived from the opium poppy or synthetic analogs, primarily used for pain relief.

• Common Drugs: Morphine, codeine, heroin

• General Effects:

  • Pain relief

  • Euphoria

  • Respiratory depression

  • High risk of addiction and overdose

• Example: Heroin is an illegal opioid with a high potential for addiction and overdose.

Table: Stimulants, Depressants, Opioids

Cannabis, Hallucinogens, Inhalants

Cannabis

Cannabis is a plant-based drug used for both medical and recreational purposes. Its main psychoactive component is THC.

• Common Drugs: Marijuana, hashish

• General Effects:

  • Altered senses and perception

  • Relaxation

  • Impaired memory and coordination

• Example: Marijuana is legal for medical use in many states but remains illegal under federal law.

Hallucinogens

Hallucinogens are drugs that cause profound distortions in perception, mood, and thought.

• Common Drugs: LSD, psilocybin (magic mushrooms), PCP

• General Effects:

  • Altered sense of time and reality

  • Hallucinations

  • Possible long-term mental health effects

• Example: LSD is known for causing vivid visual hallucinations and altered thinking.

Inhalants

Inhalants are substances that produce chemical vapors, which are inhaled to induce psychoactive effects.

• Common Drugs: Aerosols, paint thinners, glue

• General Effects:

  • Short-term euphoria

  • Dizziness

  • Loss of coordination

  • Potential for sudden death

• Example: Sniffing glue can cause immediate intoxication and long-term brain damage.

Table: Cannabis, Hallucinogens, Inhalants

Anabolic Steroids

Definition and Effects

Anabolic steroids are synthetic substances similar to the male sex hormone testosterone. They are used medically for certain conditions but are often misused to enhance athletic performance and physical appearance.

• Common Drugs: Synthetic testosterone

• General Effects:

  • Increased muscle mass and strength

  • Potential for liver and heart damage

  • Hormonal imbalances

• Example: Athletes may misuse anabolic steroids to improve performance, risking serious health consequences.

Table: Anabolic Steroids

Practice Questions and Key Concepts

• Stimulant Overdose: A person who has ingested a large amount of amphetamines (a stimulant) is most at risk of convulsions and possibly death due to overstimulation of the nervous system.

• MDMA (Ecstasy): MDMA is a stimulant with hallucinogenic properties, not available by prescription, and is derived from a lab, not a plant.

• Performance-Enhancing Drugs: Anabolic steroids are classified as drugs used to boost physical capabilities in sports.

• Opioids: Morphine, heroin, and codeine are opioids with pain-relieving properties and a high risk of addiction.

• Marijuana Use: Marijuana is legal for medical use in many states but remains illegal under federal law. Smoking marijuana is not safer than smoking tobacco.

• Drug Risks: Opioids and depressants can slow breathing and lead to death, especially when combined.

Key Definitions

• Stimulant: A drug that increases activity in the central nervous system.

• Depressant: A drug that decreases activity in the central nervous system.

• Opioid: A drug that relieves pain and can cause euphoria and respiratory depression.

• Hallucinogen: A drug that causes altered perceptions and hallucinations.

• Inhalant: A substance inhaled for its psychoactive effects.

• Anabolic Steroid: A synthetic drug that mimics testosterone, used to increase muscle mass.

Additional info:

• Combining CNS depressants and opioids greatly increases the risk of respiratory depression and death.

• Long-term use of inhalants can cause irreversible brain damage.