Levorphanol has a high risk for abuse and severe, possibly fatal, breathing problems. The risk for harm is higher if you take the wrong dose/strength, or if you take it along with other drugs that might also affect breathing. Be sure you know how to take levorphanol and what other drugs you should avoid taking with it. The risk for breathing problems might also be higher when you start this medication and after a dose increase. Get immediate help if you notice unusual slow/shallow breathing.
Keep this medicine in a safe place to prevent theft, misuse, or abuse. If a child accidentally swallows this drug, get emergency medical help right away.Who should not take levorphanol tartrate?
This medication is used to treat moderate to severe pain. Levorphanol is a narcotic pain reliever. It acts on certain centers in the brain to give you pain relief.
Take this medication by mouth, usually every 6 to 8 hours as needed or as directed by your doctor. You may take this drug with or without food. If you have nausea, you may take this drug with food, although this may cause your body to absorb less of the drug and get less benefit from it. Consult your doctor or pharmacist about other ways to decrease nausea (e.g., antihistamines, lying down for 1-2 hours with as little head movement as possible).
The dosage is based on your medical condition, age, response to treatment, and other medications that you may be taking. Pain medications work best if they are used as the first signs of pain occur. If you wait until the pain has worsened, the medication may not work as well.
You may take quick-acting narcotic pain medications for sudden (breakthrough) pain if so directed by your doctor. Also follow your doctor's or pharmacist's instructions for safely using non-narcotic pain relievers (e.g., naproxen, ibuprofen). If you have been using other long-acting narcotic pain medications or narcotic patches regularly, check with your doctor or pharmacist since they may need to be stopped before you start using this medication. If you are currently using a narcotic patch (e.g., fentanyl), the effects may continue after it is removed. Ask your doctor or pharmacist when it will be safe to start taking this medication (usually 18 hours after removing the patch).
This medication may cause withdrawal reactions, especially if it has been used regularly for a long time or in high doses. In such cases, withdrawal symptoms (such as restlessness, sweating, shaking, body aches, stomach cramps, nausea) may occur if you suddenly stop using this medication. To prevent withdrawal reactions, your doctor may reduce your dose gradually. Consult your doctor or pharmacist for more details, and report any withdrawal reactions immediately.
Though very unlikely, abnormal drug-seeking behavior (addiction) is possible with this medication. To lessen the risk of becoming addicted, do not increase your dose, take it more frequently, or take it for a longer time than prescribed. Properly stop the medication when so directed.
When used for an extended period, this medication may not work as well and may require different dosing. Talk with your doctor if this medication stops working well.
Tell your doctor if your pain persists or worsens.
Nausea, vomiting, constipation, lightheadedness, dizziness, drowsiness, dry mouth, flushing, or vision problems may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To prevent constipation, maintain a diet adequate in fiber, drink plenty of water, and exercise. If you become constipated while using this drug, consult your pharmacist for help in selecting a laxative (e.g., stimulant-type with stool softener).
Tell your doctor right away if you have any serious side effects, including: mental/mood changes (e.g., confusion, depression, abnormal thoughts), trouble urinating, fast/slow/irregular heartbeat, severe stomach/abdominal pain, change in the amount of urine.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
In the US -
Before taking levorphanol, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: brain disorders (e.g., seizures, head injury, tumor, increased intracranial pressure), heart problems (e.g., irregular heartbeat), low blood pressure, certain bowel diseases (e.g., paralytic ileus, toxic megacolon), breathing problems (e.g., asthma, chronic obstructive pulmonary disease-COPD, emphysema, low oxygen/high carbon dioxide in the blood), disease of the pancreas (e.g., pancreatitis), mental/mood disorders (e.g., toxic psychosis), a certain spinal problem (kyphoscoliosis), gallbladder disease, personal or family history of regular use/abuse of drugs/alcohol, kidney disease, liver disease, adrenal gland problem (e.g., Addison's disease), difficulty urinating (e.g., due to enlarged prostate or urethral stricture), underactive thyroid (hypothyroidism).
Before having surgery, tell your doctor or dentist that you are taking this medication.
This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Avoid alcoholic beverages.
To lower your risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Older adults may be more sensitive to the side effects of this drug, especially confusion, dizziness, drowsiness, and slow/shallow breathing.
Before using this medication, women of childbearing age should talk with their doctor(s) about the risks and benefits. Tell your doctor if you are pregnant or if you plan to become pregnant. During pregnancy, this medication should be used only when clearly needed. It may slightly increase the risk of birth defects if used during the first two months of pregnancy. Also, using it for a long time or in high doses near the expected delivery date may harm the unborn baby. To lessen the risk, take the smallest effective dose for the shortest possible time. Tell the doctor right away if you notice any symptoms in your newborn baby such as slow/shallow breathing, irritability, abnormal/persistent crying, vomiting, or diarrhea.
Based on information from related drugs, this medication may pass into breast milk. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: other medications for pain (e.g., partial agonist/antagonist narcotic pain relievers such as pentazocine, butorphanol, nalbuphine), MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine), naltrexone, cimetidine.
The risk of serious side effects (such as slow/shallow breathing, severe drowsiness/dizziness) may be increased if this medication is taken with other products that may also affect breathing or cause drowsiness. Therefore, tell your doctor or pharmacist if you are taking other products such as alcohol, medicine for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants, and other narcotic pain relievers (such as codeine).
Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.
This medication may interfere with certain laboratory tests (including amylase/lipase levels), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: slow breathing, slow heartbeat, weak muscles, extreme drowsiness leading to loss of consciousness.
Do not share this medication with others. It is against the law.
This medication has been prescribed for your current condition only. Do not use it later for another condition unless told to do so by your doctor. A different medication may be necessary in that case.
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised March 2013. Copyright(c) 2013 First Databank, Inc.
With WebMD's Medicine Cabinet, you can check interactions with drugs.Go to medicine cabinet