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.
The day of the colonoscopy procedure â As on the previous day, clear liquid foods only. Don't eat or drink anything two hours before the procedure. Bowel prep. The afternoon or evening before the colonoscopy, drink a liquid that will trigger bowel-clearing diarrhea. The exact colonoscopy prep instructions depend on the bowel prep your doctor prefers, the time of your colonoscopy, and any prior experience you've had with colon preps (if one didn't work before, you'll likely be prescribed a different one). The preferred method is known as split dosing.