What kind of drug is associated with a high percentage of deaths due to drug overdose?

Question

Quizplus · Accepted Answer

Barbiturates, a class of drugs primarily used for their sedative and anxiolytic effects, have a high risk of overdose. This risk is due to their narrow therapeutic index, meaning the difference between a therapeutic dose and a lethal dose is small. Overdoses can depress the central nervous system to a fatal level, leading to death.

What Kind of Drug Is Associated with a High Percentage