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Avinza Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Avinza (morphine sulfate) is used to treat moderate to severe pain. Short-acting morphine is taken as needed for pain. Extended-release morphine is for use when around-the-clock pain relief is needed. It is in a group of drugs called narcotic pain relievers. Common side effects include nausea, vomiting, constipation, lightheadedness, dizziness, or drowsiness.
The dose of Avinza is individualized for each patient, depending on the patient's medical condition and other factors. Avinza may interact with MAO inhibitors, other narcotic pain medications, sedatives, tranquilizers, muscle relaxers, alcohol, other medicines that can make you sleepy or slow your breathing, pentazocine, nalbuphine, butorphanol, or buprenorphine. Tell your doctor all medications you are taking. During pregnancy, Avinza should be used only when prescribed. Using it near the expected delivery date is not recommended because of the potential for harm to a fetus. Babies born to mothers who have used this medication for an extended time may have withdrawal symptoms such as irritability, abnormal/persistent crying, vomiting, or diarrhea. If you notice any of these symptoms in your newborn, tell the doctor. This drug passes into breast milk and may rarely have undesirable effects on a nursing infant. Tell the doctor if your baby develops unusual sleepiness, difficulty feeding, or trouble breathing. Consult your doctor before breast-feeding. Do not stop taking Avinza (morphine) suddenly, or you could have withdrawal symptoms.
Our Avinza (morphine sulfate) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Avinza in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- shallow breathing, slow heartbeat;
- seizure (convulsions);
- cold, clammy skin;
- severe weakness or dizziness; or
- feeling light-headed, fainting.
Less serious side effects are more likely to occur, such as:
- warmth, tingling, or redness under your skin;
- nausea, vomiting, stomach pain, diarrhea, loss of appetite;
- dizziness, headache, anxiety;
- memory problems; or
- sleep problems (insomnia).
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Avinza (Morphine Sulfate) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Avinza Overview - Patient Information: Side Effects
To prevent constipation, eat a diet adequate in fiber, drink plenty of water, and exercise. Ask your pharmacist for help in selecting a laxative (such as a stimulant type with stool softener).
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: mental/mood changes (such as agitation, confusion, hallucinations), severe stomach/abdominal pain, difficulty urinating.
Seek immediate medical attention if any of these rare but serious side effects occur: fainting, seizure, slow/shallow breathing, unusual drowsiness/difficulty waking up.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Avinza (Morphine Sulfate)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Avinza FDA Prescribing Information: Side Effects
The following serious adverse reactions and/or conditions are discussed elsewhere in the labeling:
- Respiratory Depression [see WARNINGS AND PRECAUTIONS]
- Chronic Pulmonary Disease [see WARNINGS AND PRECAUTIONS]
- Head Injuries and Increased Intracranial Pressure [see WARNINGS AND PRECAUTIONS]
- Interactions with Other CNS Depressants [see WARNINGS AND PRECAUTIONS]
- Hypotensive Effect [see WARNINGS AND PRECAUTIONS]
- Gastrointestinal Effects [see WARNINGS AND PRECAUTIONS]
- Seizures [see WARNINGS AND PRECAUTIONS]
Clinical Studies Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice.
In controlled and open-label clinical studies, 560 patients with chronic malignant or non-malignant pain were treated with AVINZA. The most common serious adverse events reported with administration of AVINZA were vomiting, nausea, death, dehydration, dyspnea, and sepsis. (Deaths occurred in patients treated for pain due to underlying malignancy.) Serious adverse events caused by morphine include respiratory depression, apnea, and to a lesser degree, circulatory depression, respiratory arrest, shock and cardiac arrest.
The most common adverse events (seen in greater than 10%) reported by patients treated with AVINZA during the clinical trials at least once during therapy were constipation, nausea, somnolence, vomiting, and headache. Adverse events occurring in 5-10% of study patients were peripheral edema, diarrhea, abdominal pain, infection, urinary tract infection, accidental injury, flu syndrome, back pain, rash, sweating, fever, insomnia, depression, paresthesia, anorexia, dry mouth, asthenia and dyspnea. Other less common side effects expected from opioid analgesics, including morphine, or seen in fewer than 5% of patients taking AVINZA in the clinical trials were:
Body as a Whole: malaise, withdrawal syndrome.
Metabolic and Nutritional Disorders: edema, weight loss.
Musculoskeletal: skeletal muscle rigidity.
Nervous System: abnormal dreams, abnormal gait, agitation, amnesia, anxiety, ataxia, confusion, convulsions, coma, delirium, euphoria, hallucinations, lethargy, nervousness, abnormal thinking, tremor, vasodilation, vertigo.
Respiratory System: hiccup, hypoventilation, voice alteration.
Anaphylaxis has been reported with ingredients contained in AVINZA. Advise patients how to recognize such a reaction and when to seek medical attention.
Read the entire FDA prescribing information for Avinza (Morphine Sulfate) »
Additional Avinza Information
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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