3.2 (table) classification based on pharmacodynamics

Strong Full Mu Receptor Agonist

Used in severe pain management

Mild to Moderate Full Agonist

Used for mild to moderate pain relief

Partial Agonist

Dual interaction with full agonists (D/I)

Full Antagonists

Used as antidotes for narcotic poisoning

Strong Full Mu Receptor Agonist

Morphine

Strong Full Mu Receptor Agonist

Morphine

Strong Full Mu Receptor Agonist

Hydromorphone

Strong Full Mu Receptor Agonist

Oxymorphone

Strong Full Mu Receptor Agonist

Methadone

Strong Full Mu Receptor Agonist

Meperidine

Strong Full Mu Receptor Agonist

Levorphanol

Strong Full Mu Receptor Agonist

Fentanyl

Mild to Moderate Full Agonist

Codeine

Mild to Moderate Full Agonist

Hydrocodone

Mild to Moderate Full Agonist

Oxycodone

Mild to Moderate Full Agonist

Tramadol

Partial Agonist

Nalbuphine

Partial Agonist

Butorphanol

Partial Agonist

Buprenorphine

Partial Agonist

Pentazocine

Full Antagonists

Naloxone

Full Antagonists

Naltrexone

Full Antagonists

Nalorphine

Full Antagonists

Nalmefene

Full Antagonists

Levallorphan