Final answer:
Morphine and codeine are two opioids that can be used as anti-diarrheals.
Step-by-step explanation:
Morphine and codeine are two opioids that can be used as anti-diarrheals. These opioids work by slowing down the movement of the intestines, which helps to reduce diarrhea. Morphine is often used in medical settings for severe pain relief, while codeine can be found in combination with other non-opioid medications for mild to moderate pain relief.