PAIN

1. CNS

2. Adverse Effects

2.1. Respiratory Depression

2.2. Vomiting

2.3. drowsiness

2.4. constipation

2.5. nausea

2.6. Pain

3. Narcotic

3.1. Opiate

3.2. Opioid

3.2.1. Naloxone

3.2.1.1. Agonist

3.2.2. Codeiene

3.2.2.1. weak Agonist

3.2.3. Morphine

3.2.3.1. Strong Agonist

3.2.4. Fentanyl

3.2.4.1. Partial Agonist

4. Opioid Receptor

4.1. Kappa

4.2. Delta

4.3. Mu