In the United States, the schedule of a controlled substance indicates how tightly regulated a substance is based on accepted medical use and its potential for abuse or dependence, according to the Drug Enforcement Admin... More » Health

The Controlled Substances Act is the federal legislation that identifies and regulates proscribed drugs and chemicals, according to the U.S. Food and Drug Administration. The law gives the U.S. Department of Justice the ... More »

The U.S. Drug Enforcement Administration classifies controlled substances as substances that have a potential for abuse or dependence, such as heroin, methamphetamine and cocaine. The DEA categorizes controlled substance... More » Government & Politics Crime

As of 2015, some medications on the list of schedule II controlled substances are hydromorphone, morphine and hydrocodone, while Tylenol with Codeine, benzphetamine and ketamine are examples of schedule III controlled su... More »

Phentermine is a weight-loss drug classified as a schedule III controlled substance and may not be possessed without a valid prescription, explains the U.S. Drug Enforcement Administration. Phentermine is the most common... More » Health Medications & Vitamins

On its website, the Drug Enforcement Administration provides lists of controlled substances, regulated chemicals and scheduling actions. The documents are not comprehensive and are meant to serve as general reference mat... More » Health

Hydroco/APAP 5-325, Norco, requires a prescription because it is classified as a Schedule III controlled substance by the U.S. Drug Enforcement Administration. The numerals are indicative of the dosage of each medication... More » Health Medications & Vitamins