Final answer:
Schedule III substances include cough and cold preparations containing limited quantities of certain narcotics.
Step-by-step explanation:
The examples of Schedule III substances include cough and cold preparations containing limited quantities of certain narcotics. These medications are regulated under the Controlled Substances Act (CSA) in the United States. Schedule III substances have a lower potential for abuse compared to Schedule I and II substances, but still have a moderate to low potential for physical and psychological dependence.