Examples include heroin, hydrocodone, and hydromorphone. Fully synthetic opioids are not derived from an opiate but still bind the opioid receptor. Examples include fentanyl and methadone [2]. Opioids are often used medically for pain relief but are also used non-medically for their psychoactive and euphoric effects.
A clear liquid diet on the day before your colonoscopy helps clear out your intestines, as well as helping to maintain your hydration.
Up to 4 days before colonoscopy; What To Eat Before A Colonoscopy - Colonoscopy Diet: 1  One Day Before: 2  One day before the procedure - Diet Before Colonoscopy Bowel Preparation: 3  Tips For Smooth Colonoscopy Procedure: 4  The day of procedure: