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.
What foods can you eat the day before a colonoscopy? The day before a colonscopy, one's diet is extremely limited, allowing only clear liquids and clear liquid foods, such as clear juices, broths and bouillons, and popsicles or Jell-O. The day of the colonoscopy, one should follow the same restrictions until 2 hours before the procedure, notes Harvard Medical School.