Final answer:
Morphine, codeine, and oxycodone are examples of opioids that work as cough suppressants.
Step-by-step explanation:
Opioids are sometimes used as cough suppressants due to their ability to suppress the cough reflex by acting on the central nervous system. However, the use of opioids for cough suppression is generally limited and reserved for specific situations, as opioids have the potential for significant side effects and the risk of misuse.
Morphine, codeine, and oxycodone are examples of opioids that work as cough suppressants. These opioids have analgesic properties, meaning they can relieve pain, and they also have the ability to suppress coughing. Codeine was historically considered the standard cough suppressant, but recent studies have questioned its effectiveness.