Meperidine is used to relieve moderate to severe pain. Meperidine is in a class of medications opiate (narcotic) analgesics. It works by changing the way the brain and nervous system respond to pain.

It comes as a tablet and a syrup (liquid) to take by mouth. It is usually taken with or without food every 3 to 4 hours as needed for pain. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand.

If you are taking the meperidine tablets, swallow them whole; do not chew, break, or crush them. Swallow each tablet right after you put it in your mouth.

If you are taking this syrup, use a dose-measuring spoon or cup to measure the correct amount of liquid for each dose, not a regular household spoon. Mix your dose with half a glass of water and swallow the mixture. Swallowing undiluted meperidine syrup may numb the mouth.

Your doctor will probably adjust your dose of it during your treatment. Be sure to tell your doctor about any pain and side effects you experience while taking this medication. This will help your doctor find the dose that is best for you.