Inhalants, including acetones and glues, are commonly abused and can cause brain damage and cardiac arrest. Which category do they belong to?

• A. Inhalants
• B. Stimulants
• C. Narcotics
• D. Alcohol

Answer: (A)

Abused inhalants are a category of drugs defined by how they are used—by inhaling volatile solvents to achieve a quick high. Substances like acetone and glues fit this group because their psychoactive effects come primarily from inhalation of vapors, not from a pill or a drink.

These inhalants are distinct from other classes because their dangerous effects come from both oxygen displacement and direct toxic effects on the brain and heart, which can lead to brain damage and cardiac arrest. Stimulants, in contrast, produce increased alertness and energy; narcotics (opioids) depress respiration and alter pain perception; and alcohol is a central depressant with different mechanisms and risks. The specific risks described—brain injury and possible heart arrest from inhalant use—are characteristic of inhalants, making that category the best fit.