A drug or other substance that affects mood or behavior and is consumed for nonmedical purposes, especially one sold illegally.

A substance that causes physical or psychological dependence and is usually illegal to manufacture or sell without a prescription.

A chemical agent that acts on the nervous system and can alter perception, consciousness, or behavior, often leading to changes in mood or cognition.

A type of drug that is used to relieve pain, often categorized as strong painkillers that can be habit-forming.

A program designed to prevent the misuse of drugs through education and awareness about their dangers and consequences.

A document that specifies the legal status, manufacturing guidelines, and distribution of a drug, ensuring it is used safely and effectively.

A legal document that medical professionals write to authorize a patient to obtain a specific medication at a pharmacy.

A condition resulting from the continuous use of a drug, leading to physical and psychological symptoms when the drug is not taken.

A substance that can enhance performance in physical tasks, often associated with unethical practices in sports.

A serious health condition caused by the chronic use of alcohol, leading to liver damage and dysfunction.

A substance used to treat or prevent disease, and that can alter bodily functions or perceptions.

A drug that slows down the functions of the central nervous system and can cause relaxation and decreased awareness.

A type of drug that increases alertness, energy, and attention, often enhancing physical and mental performance.

A strong, often illegal substance that alters perception, mood, and thought, leading to experiences that can be vivid or unclear.

A type of drug that reduces pain by blocking signals in the brain, often used for severe pain relief.

A substance that can lead to physical or psychological addiction and is often illegal or heavily regulated.

A harmful or illegal substance consumed for its psychoactive effects, often leading to addiction and health issues.

A syndrome characterized by withdrawal symptoms when a person stops using a substance after prolonged use.

The gradual increase in the amount of drug needed to achieve the same effect, often seen in long-term users.

A serious and potentially fatal reaction to a drug, often caused by taking too much at one time.