Morphine, rapid release (By mouth)
Treats moderate to severe pain. This medicine is a narcotic pain reliever.
Brand Name(s):There may be other brand names for this medicine.
When This Medicine Should Not Be Used:This medicine is not right for everyone. Do not use it if you had an allergic reaction to morphine, codeine, hydrocodone, dihydrocodeine, or oxycodone, or you have severe lung or breathing problems or paralytic ileus.
How to Use This Medicine:
Capsule, Liquid, Tablet
- Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
- An overdose can be dangerous. Follow directions carefully so you do not get too much medicine at one time.
- It is best to take this medicine with food or milk.
- Capsule: If you cannot swallow the capsule whole, you may open it and mix the medicine pellets with a small amount of applesauce, pudding, juice, or water. Swallow the mixture right away, without chewing or crushing the pellets.
- Oral liquid: Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
- This medicine should come with a Medication Guide. Ask your pharmacist for a copy if you do not have one.
- Missed dose: If you miss a dose of this medicine, skip the missed dose and take your next dose at your usual time the next day. Do not double doses.
- Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Store the medicine in a safe and secure place. Do not throw unused medicine in the trash. Ask your pharmacist about the best way to dispose of medicine you do not use.
Drugs and Foods to Avoid:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Do not use this medicine if you are using or have used an MAO inhibitor within the past 14 days.
- Some medicines can affect how morphine works. Tell your doctor if you are using any of the following:
- Cimetidine, mirtazapine, quinidine, tramadol, trazodone, or verapamil
- Diuretic (water pill)
- Medicine to treat depression
- Phenothiazine medicine
- Triptan medicine to treat migraine headaches
- Do not drink alcohol while you are using this medicine.
- Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol. Tell your doctor if you are also using buprenorphine, butorphanol, nalbuphine, pentazocine, a benzodiazepine, or a muscle relaxer.
Warnings While Using This Medicine:
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, heart disease, low blood pressure, breathing problems or lung disease (such as asthma or COPD), Addison's disease, gallbladder problems, pancreas problems, thyroid problems, an enlarged prostate, trouble urinating, or stomach or bowel problems. Tell your doctor if you have a history of head injury, brain tumor, depression, seizures, or alcohol or drug abuse.
- This medicine may cause the following problems:
- High risk of overdose, which can lead to death
- Respiratory depression (serious breathing problem that can be life-threatening)
- Serotonin syndrome (when used with certain medicines)
- This medicine can be habit-forming. Do not use more than your prescribed dose. Call your doctor if you think your medicine is not working.
- Do not stop using this medicine suddenly. Your doctor will need to slowly decrease your dose before you stop it completely.
- This medicine could cause infertility. Talk with your doctor before using this medicine if you plan to have children.
- This medicine may make you dizzy, drowsy, or lightheaded. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
- This medicine may cause constipation, especially with long-term use. Ask your doctor if you should use a laxative to prevent and treat constipation.
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
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
- Anxiety, restlessness, fast heartbeat, fever, sweating, muscle spasms, twitching, nausea, vomiting, diarrhea, seeing or hearing things that are not there
- Blue lips, fingernails, or skin
- Extreme dizziness or weakness, shallow breathing, slow or uneven heartbeat, sweating, cold or clammy skin, seizures
- Severe confusion, lightheadedness, dizziness, or fainting
- Severe constipation, stomach pain, or vomiting
- Trouble breathing or slow breathing
If you notice these less serious side effects, talk with your doctor:
- Mild constipation, nausea, or vomiting
- Mild sleepiness or tiredness
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: 10/10/2019