Which of the following is NOT one of the categories of controlled substances?

Study for the New Mexico Law Enforcement Officer's Certification Exam. Familiarize yourself with the format and content with multiple choice questions, hints, and explanations. Ace your certification!

Capsules are not categorized as a type of controlled substance. Instead, they are a form of medication delivery that can contain various types of substances, including controlled and non-controlled drugs. The classification of controlled substances is based on the effects they have on the central nervous system, their potential for abuse, and their medical utility.

The other options refer to established categories of controlled substances: hallucinogens are substances that can alter perception and cognition; narcotics primarily refer to opioids and substances that relieve pain but also have a risk for addiction; and stimulants are drugs that increase activity in the brain, enhancing alertness and energy. These classifications are crucial in understanding the regulation and legal handling of these substances under controlled substance laws.