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Home Knowledge Center Wellness Library Meperidine Injection 25 mg/mL (1 mL), 50 mg/mL (0.5 mL), 50 mg/mL (1 mL), 50 mg/mL (1.5 mL), 50 mg/mL (2 mL), 75 mg/mL (1 mL), 100 mg/mL (1 mL)

Meperidine Injection 25 mg/mL (1 mL), 50 mg/mL (0.5 mL), 50 mg/mL (1 mL), 50 mg/mL (1.5 mL), 50 mg/mL (2 mL), 75 mg/mL (1 mL), 100 mg/mL (1 mL)

This medicine is used for the following purposes:

  • anesthesia
  • local anesthesia
  • pain

Brand Name(s): Demerol

Generic Name: Meperidine

Instructions

Instructions

Carefully follow the instructions for preparing this medicine before injection.

Read and make sure you understand the instructions for measuring your dose and using the syringe before using this medicine.

Always inspect the medicine before using.

The liquid should be clear and colorless.

Do not use the medicine if it contains any particles or if it has changed color.

Some brands of this medicine must be stored in the refrigerator while others may be kept at room temperature. Please speak with your pharmacist about how you should store your medicine.

Do not store in the bathroom.

Protect medicine from light.

Never use any medicine that has expired.

Please ask your doctor, nurse, or pharmacist how to discard unused medicines safely.

If you forget to take a dose on time, take it as soon as you remember. If it is almost time for the next dose, do not take the missed dose. Return to your normal schedule. Do not take 2 doses at one time.

Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.

Tell your doctor if symptoms do not get better or if they get worse.

To reduce constipation, eat high fiber foods, drink plenty of water and exercise.

If you need to stop this medicine, your doctor may wish to gradually reduce the dosage before stopping.

Keep all appointments for medical exams and tests while on this medicine.

Cautions

Cautions

This medicine has an opioid. Opioids help many people but may cause addiction, especially if used for a long time. The addiction risk is higher if you have a substance use disorder (overuse of or addiction to drugs or alcohol). Ask your doctor about the benefits and risks.

Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.

Some patients taking this medicine have experienced serious side effects. Please speak with your doctor to understand the risks and benefits associated with this medicine.

This medicine is associated with an increased risk for seizures. Please ask your doctor whether you may be at risk for having a seizure while on this medicine.

Do not use the medication any more than instructed.

This medicine may cause dizziness or fainting, especially after exercising or in hot weather. Be very careful when standing or sitting up quickly.

Your ability to stay alert or to react quickly may be impaired by this medicine. Do not drive or operate machinery until you know how this medicine will affect you.

If possible, avoid using with alcohol, marijuana, or other medicines that can cause dizziness or drowsiness. These include allergy/cold products, muscle relaxers, sleep aids, and pain relievers.

Call the doctor if there are any signs of confusion or unusual changes in behavior.

Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.

This medicine can hurt a new baby in the womb. If you become pregnant while on this medicine, tell your doctor immediately. Your doctor may switch you to a different medicine.

Do not take St. John's wort while on this medicine.

This medicine should be used with caution in patients with breathing difficulties.

Call your doctor right away if you notice slow or shallow breathing.

Ask your pharmacist how to properly throw away used needles or syringes.

Do not share this medicine with anyone who has not been prescribed this medicine.

Side Effects

Side Effects

The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.

  • constipation
  • dizziness or drowsiness
  • pain, redness, swelling near injection
  • nausea and vomiting
  • sweating

Call your doctor or get medical help right away if you notice any of these more serious side effects:

  • decreased appetite
  • decreased awareness or responsiveness
  • shallow, irregular breathing
  • changes in memory, mood, or thinking
  • difficulty concentrating
  • fainting
  • fever
  • hallucinations (unusual thoughts, seeing or hearing things that are not real)
  • fast, irregular, or slow heartbeat
  • muscle trembling
  • seizures
  • shortness of breath
  • severe stomach or bowel pain
  • unusual or unexplained tiredness or weakness
  • difficulty or discomfort urinating
  • blurring or changes of vision
  • weight loss

A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.

Please speak with your doctor, nurse, or pharmacist if you have any questions about this medicine.

This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

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