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 prior to the colonoscopy should only entail a liquid diet (i.e. broth, water, sprite, 7-up, tea, coffee without sugar or cream, and jello--avoid orange or red. C â¦ ease all fluid intake at midnight before the procedure. The day prior to the colonoscopy should only entail a liquid diet (i.e. broth, water, sprite, 7-up, tea, coffee without sugar or cream, and jello--avoid orange or red. C â¦ ease all fluid intake at midnight before the procedure.