IC&RC Understanding Addiction Practice Test 2025 - Free Addiction Understanding Practice Questions and Study Guide

High doses of barbiturates can lead to suppressed respiratory function, which is a critical and potentially life-threatening side effect. Barbiturates are central nervous system (CNS) depressants, meaning they slow down brain activity, which can impair various bodily functions, including the regulation of breathing. When taken in large quantities, these substances can cause respiratory depression, decreasing the effectiveness of the body’s natural breathing mechanism. This is particularly dangerous because it can lead to inadequate oxygen supply to the brain and other vital organs, potentially resulting in coma or death if emergency medical intervention is not provided.

The other choices do not accurately reflect the effects of high doses of barbiturates. Increased sociability, burst of energy, and enhanced creativity are typically associated with stimulant drugs, not depressants like barbiturates, which instead produce sedative effects that lead to lethargy, confusion, and sedation. Thus, the significant risk associated with respiratory suppression emphasizes the dangerous nature of barbiturate overdose.