Noralphenazone

Noralphenazone is a synthetic opioid analgesic and antipyretic drug. It is a metabolite of the opioid analgesic meperidine (pethidine), which is produced by the liver through demethylation. Noralphenazone is approximately 10 times more potent than meperidine and has a longer duration of action. It is used primarily for its analgesic properties, providing relief from moderate to severe pain. Noralphenazone is available in various formulations, including tablets, capsules, and injectable solutions. It is typically prescribed for conditions such as postoperative pain, chronic pain, and severe pain associated with cancer. Like other opioids, noralphenazone can cause side effects such as nausea, vomiting, constipation, and respiratory depression. It is important to use noralphenazone under medical supervision due to its potential for abuse and dependence. The drug should be used with caution in patients with a history of respiratory depression, liver or kidney disease, or those who are pregnant or breastfeeding.