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.
Cold beer in a glass. Before a colonoscopy, the large intestines must be emptied to allow clear visibility and be void of obstructions. A clear liquid diet is usually required for one to two days before the procedure. Some alcoholic beverages are clear, so you may wonder whether you are allowed to drink them before your scheduled colonoscopy. Follow your doctor's instructions to ensure your colonoscopy results are accurate and the procedure does not have to be repeated.