What is Morphine

Therapeutic Category

  • Analgesic, Narcotic


Relief of moderate to severe acute and chronic pain; relief of pain of myocardial infarction; relief of dyspnea of acute left ventricular failure and pulmonary edema; preanesthetic medication
  DepoDur™: Epidural (lumbar) single-dose management of surgical pain

  Orphan drug: Infumorph™: Used in microinfusion devices for intraspinal administration in treatment of intractable chronic pain 

Morphine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • dizziness
  • lightheadedness
  • drowsiness
  • nausea
  • vomiting
  • constipation
  • diarrhea
  • loss of appetite
  • weight loss
  • changes in ability to taste food
  • dry mouth
  • sweating
  • weakness
  • headache
  • agitation
  • nervousness
  • mood changes
  • confusion
  • difficulty falling asleep or staying asleep
  • stiff muscles
  • shaking of a part of your body that you cannot control
  • double vision
  • red eyes
  • small pupils (black circles in the middle of the eyes
  • eye movements that you cannot control
  • chills
  • flu symptoms
  • decreased sexual desire or ability
  • difficulty urinating or pain when urinating

Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:

  • slow, shallow, or irregular breathing
  • blue or purple color to the skin
  • fast or slow heartbeat
  • seizures
  • hallucinations (seeing things or hearing voices that do not exist)
  • blurred vision
  • fainting
  • hives
  • rash
  • itching
  • tightness in the throat
  • difficulty swallowing
  • swelling of the arms, hands, feet, ankles, or lower legs
Morphine may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

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