Final answer:
The strong opioid agonists among the listed substances are Morphine, Fentanyl, and Oxycodone, thanks to their high potency and effectiveness in severe pain management.
Step-by-step explanation:
When identifying which of the following are considered strong opioid agonists, we assess their potency and their medical use. Strong opioid agonists are medications that effectively bind to opioid receptors in the brain, spinal cord, and gastrointestinal tract to produce significant pain relief. Considering this, the substances listed that are strong opioid agonists include:
- Morphine, which is commonly used before and after surgical procedures to relieve severe pain.
- Fentanyl, a synthetic opioid that is extremely potent and used in chronic pain management and as an anesthetic.
- Oxycodone, often prescribed for moderate to severe pain and structurally similar to morphine.
On the other hand, Codeine is generally considered a less potent opioid, typically prescribed for mild to moderate pain, and sometimes as a cough suppressant. Tramadol also falls into a less potent category and is used for moderate pain relief.