"it was administered in the lowest dosage for post-op pain. no side effects and very effective. motrin, tylenol and other otc pain relief is lacking compared to this. morphine imo is not even clo se to effective..i have a low tolerance for pain (distracting at the least). i have a hard time understanding why proven pain meds are so restricted when very low doses are twice as effective long term over generic, higher dose, low effect pain meds.given a choice, this has been the best chronic pain relief i have experienced. demerol was discontinued for inpatient use by morphine..go figure."