NAUSEA & VOMITING FROM OPIOID PAIN-KILLERS
There are 3 main causes: 1. Activation of chemoreceptor trigger zone 2. Delayed gastric emptying 3. Constipation. Solutions, in order as above, are: 1. Stemetil, Gravol which deactivate chemoreceptor trigger zone 2. Metoclopramide: a pro-kinetic agent 3. Senokot (stimulant laxative); docusate (stool softener)