Meperidine (By mouth)
Treats pain. This medicine is a narcotic pain reliever.
Demerol Hydrochloride, MeperitabThere may be other brand names for this medicine.
When This Medicine Should Not Be Used:You should not use this medicine if you have had an allergic reaction to meperidine. You should not use this medicine if you have used an MAO inhibitor (MAOI) such as Eldepryl®, Marplan®, Nardil®, or Parnate® within the past 14 days.
How to Use This Medicine:
- Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.
- Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
- The oral liquid may cause your mouth to feel numb. Mix your medicine with a half glass of water to reduce the numbing effect.
- Drink plenty of fluids to help avoid constipation.
If a dose is missed:
- If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.
How to Store and Dispose of This Medicine:
- Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
- Destroy any medicine that you do not need by flushing it down the toilet.
- Keep all medicine away from children and never share your medicine with anyone.
Drugs and Foods to Avoid:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Make sure your doctor knows if you are using acyclovir (Zovirax®), cimetidine (Tagamet®), phenytoin (Dilantin®), or ritonavir (Norvir®). Tell your doctor if you are using a phenothiazine such as Compazine®, Phenergan®, or Thorazine®.
- Tell your doctor if you are using any medicines that make you sleepy. These include sleeping pills, cold and allergy medicine, narcotic pain relievers, and sedatives.
- Do not drink alcohol while you are using this medicine.
Warnings While Using This Medicine:
- Make sure your doctor knows if you are pregnant or breast feeding. Tell your doctor if you have a history of heart rhythm problems, stomach or digestive problems, alcoholism, or drug dependence. Your doctor will need to know if you have a history of seizures, Addison's disease, trouble urinating, or prostate problems. Tell your doctor if you have kidney disease, liver disease, low levels of thyroid hormone, or have had a recent surgery or head injury. Make sure your doctor knows if you have asthma or other breathing problems, sickle cell anemia, or pheochromocytoma.
- This medicine may be habit-forming. If you feel that the medicine is not working as well, do not use more than your prescribed dose. Call your doctor for instructions.
- Do not stop using this medicine suddenly without asking your doctor. You may need to slowly decrease your dose before stopping it completely.
- Make sure any doctor or dentist who treats you knows that you are using this medicine.
- This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.
- This medicine may cause constipation. This is more common if you use it for a long time. Ask your doctor if you should also use a laxative to prevent and treat constipation.
Possible Side Effects While Using This Medicine:
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing.
- Confusion, unusual thoughts, or hallucinations (seeing things that are not really there).
- Extreme weakness.
- Lightheadedness or fainting.
- Shortness of breath, or shallow breathing.
- Unusually slow, fast, or uneven heartbeat.
If you notice these less serious side effects, talk with your doctor:
- Dry mouth.
- Muscle twitching or tremors.
- Nausea, vomiting, or constipation.
- Sweating more than usual.
- Warmth or redness in your face.
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
Last Updated: 1/4/2011
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