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Levorphanol may be habit forming, especially with prolonged use. Take levorphanol exactly as directed. Do not take more of it, take it more often, or take it in a different way than directed by your doctor. While taking levorphanol, discuss with your health care provider your pain treatment goals, length of treatment, and other ways to manage your pain. Tell your doctor if you or anyone in your family drinks or has ever drunk large amounts of alcohol, uses or has ever used street drugs, or has overused prescription medications, or if you have or have ever had depression or another mental illness. There is a greater risk that you will overuse levorphanol if you have or have ever had any of these conditions. Talk to your health care provider immediately and ask for guidance if you think that you have an opioid addiction or call the U.S. Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-HELP.
Levorphanol may cause serious or life-threatening breathing problems, especially during the first 24 to 72 hours of your treatment and any time your dose is increased. Your doctor will monitor you carefully during your treatment. Your doctor will adjust your dose carefully to control your pain and decrease the risk that you will experience serious breathing problems. Tell your doctor if you have or have ever had slowed breathing or asthma. Your doctor may tell you not to take levorphanol. Also tell your doctor if you have or have ever had lung disease such as chronic obstructive pulmonary disease (COPD; a group of lung diseases that includes chronic bronchitis and emphysema), a head injury, or any condition that increases the amount of pressure in your brain. The risk that you will develop breathing problems may be higher if you are an older adult or are weakened or malnourished due to disease. If you experience any of the following symptoms, call your doctor immediately or get emergency medical treatment: slowed breathing, long pauses between breaths, or shortness of breath.
Taking certain other medications during your treatment with levorphanol may increase the risk that you will experience breathing problems or other serious, life-threatening breathing problems, sedation, or coma. Tell your doctor if you are taking or plan to take any of the following medications: benzodiazepines such as alprazolam (Xanax), diazepam (Diastat, Valium), estazolam, flurazepam, lorazepam (Ativan), and triazolam (Halcion); other narcotic pain medications; medications for mental illness or nausea; muscle relaxants; sedatives; sleeping pills; or tranquilizers. Your doctor may need to change the dosages of your medications and will monitor you carefully. If you take levorphanol with any of these medications and you develop any of the following symptoms, call your doctor immediately or seek emergency medical care immediately: unusual dizziness, lightheadedness, extreme sleepiness, slowed or difficult breathing, or unresponsiveness. Be sure that your caregiver or family members know which symptoms may be serious so they can call the doctor or emergency medical care if you are unable to seek treatment on your own.
Drinking alcohol, taking prescription or nonprescription medications that contain alcohol, or using street drugs during your treatment with levorphanol increases the risk that you will experience breathing problems or other serious, life-threatening side effects. Do not drink alcohol, take any prescription or nonprescription medications that contain alcohol, or use street drugs during your treatment with other levorphanol products.
Do not allow anyone else to take your medication. Levorphanol may harm or cause death to other people who take your medication, especially children. Keep levorphanol in a safe place so that no one else can take it accidentally or on purpose. Be especially careful to keep levorphanol out of the reach of children. Keep track of how many tablets are left so you will know if any medication is missing. Dispose of any unneeded levorphanol tablets properly according to instructions. (See STORAGE and DISPOSAL.)
Tell your doctor if you are pregnant or plan to become pregnant. If you take levorphanol regularly during your pregnancy, your baby may experience life-threatening withdrawal symptoms after birth. Tell your baby’s doctor right away if your baby experiences any of the following symptoms: irritability, hyperactivity, abnormal sleep, high-pitched cry, uncontrollable shaking of a part of the body, vomiting, diarrhea, or failure to gain weight.
Your doctor or pharmacist will give you the manufacturer’s patient information sheet (Medication Guide) when you begin treatment with levorphanol and each time you fill your prescription. Read the information carefully and ask your doctor or pharmacist if you have any questions. You can also visit the Food and Drug Administration (FDA) website (http://www.fda.gov/Drugs/DrugSafety/ucm085729.htm) or the manufacturer’s website to obtain the Medication Guide.
Why is this medication prescribed?
Levorphanol is used to relieve moderate to severe pain. Levorphanol is in a class of medications called opiate (narcotic) analgesics. It works by changing the way the brain and nervous system respond to pain.
How should this medicine be used?
Levorphanol comes as a tablet to take by mouth. It usually is taken every 6 to 8 hours as needed. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take levorphanol exactly as directed.
Your doctor may start you on a low dose of levorphanol and gradually increase your dose until your pain is controlled. Your doctor may adjust your dose at any time during your treatment if your pain is not controlled. If you feel that your pain is not controlled, call your doctor. Do not change the dose of your medication without talking to your doctor.
Do not stop taking levorphanol without talking to your doctor. Your doctor may decrease your dose gradually. If you suddenly stop taking levorphanol, you may experience withdrawal symptoms such as restlessness; teary eyes; runny nose; yawning; irritability; anxiety; sweating; difficulty falling asleep or staying asleep; chills; back, muscle, or joint pain; nausea; vomiting; loss of appetite; diarrhea; stomach cramps; weakness; fast heartbeat; or fast breathing.
Other uses for this medicine
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
What special precautions should I follow?
Before taking levorphanol,
- Tell your doctor and pharmacist if you are allergic to levorphanol, any other medications, or any of the inactive ingredients in levorphanol tablets. Ask your pharmacist or check the Medication Guide for a list of the inactive ingredients.
- Tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: antihistamines; buprenorphine (Belbuca, Butrans, in Suboxone, others); butorphanol; medications for cough, cold, or allergies; diuretics (‘water pills’); medications for migraine headaches such as almotriptan (Axert), eletriptan (Relpax), frovatriptan (Frova), naratriptan (Amerge), rizatriptan (Maxalt), sumatriptan (Imitrex, in Treximet), and zolmitriptan (Zomig); mirtazapine (Remeron); nalbuphine; naloxone (Evzio, Narcan); pentazocine (Talwin); 5HT3 serotonin blockers such as alosetron (Lotronex), dolasetron (Anzemet), granisetron (Kytril), ondansetron (Zofran, Zuplenz), or palonosetron (Aloxi); selective serotonin-reuptake inhibitors such as citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem, in Symbyax), fluvoxamine (Luvox), paroxetine (Brisdelle, Prozac, Pexeva), and sertraline (Zoloft); serotonin and norepinephrine reuptake inhibitors such as desvenlafaxine (Khedezla, Pristiq), duloxetine (Cymbalta), milnacipran (Savella), and venlafaxine (Effexor); tramadol (Conzip, Ultram, in Ultracet); trazodone (Oleptro); or tricyclic antidepressants (‘mood elevators’) such as amitriptyline, clomipramine (Anafranil), desipramine (Norpramin), doxepin (Silenor), imipramine (Tofranil), nortriptyline (Pamelor), protriptyline (Vivactil), and trimipramine (Surmontil). Also tell your doctor if you are taking any of the following monoamine oxidase (MAO) inhibitors, or if you have stopped taking them within the past 2 weeks: isocarboxazid (Marplan), linezolid (Zyvox), methylene blue, phenelzine (Nardil), selegiline (Eldepryl, Emsam, Zelapar), and tranylcypromine (Parnate). Many other medications may also interact with levophanol, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- Tell your doctor if you have or have ever had any of the conditions mentioned in the IMPORTANT WARNING section, a blockage in your stomach or intestines, or paralytic ileus (condition in which digested food does not move through the intestines). Your doctor may tell you not to take levorphanol.
- Tell your doctor if you have or have ever had low blood pressure, seizures, urinary problems, gallbladder problems, or liver, pancreas, kidney, lung, thyroid, or heart disease.
- Tell your doctor if you are breastfeeding. If you breastfeed during your treatment with levorphanol , your baby may receive some levorphanol in breast milk. Watch your baby closely for any changes in behavior or breathing, especially when you start taking levorphanol. If your baby develops any of these symptoms, call your baby’s doctor immediately or get emergency medical help: unusual sleepiness, difficulty breastfeeding, difficulty breathing, or limpness. Talk to your baby’s doctor when you are ready to wean your baby. You will need to wean your baby gradually so that your baby will not develop withdrawal symptoms when he or she stops receiving levorphanol in breastmilk.
- You should know that this medication may decrease fertility in men and women. Talk to your doctor about the risks of taking levorphanol.
- If you are having surgery, including dental surgery, tell the doctor or dentist that you are taking levorphanol.
- You should know that levorphanol may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.
- You should know that levorphanol may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. To avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up.
- You should know that levorphanol may cause constipation. Talk to your doctor about changing your diet or using other medications to prevent or treat constipation while you are taking levorphanol.
What should I do if I forget a dose?
Levorphanol usually is taken as needed. If your doctor has told you to take levorphanol regularly, take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
What side effects can this medication cause?
Levorphanol may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- Stomach pain
- Dry mouth
- Vision problems
- Difficulty urinating
Some side effects can be serious. If you experience any of these symptoms or those listed in the IMPORTANT WARNING or SPECIAL PRECAUTIONS sections, call your doctor immediately or get emergency medical treatment
- Nausea, vomiting, loss of appetite, weakness, or dizziness
- Agitation, hallucinations (seeing things or hearing voices that do not exist), fever, sweating, confusion, fast heartbeat, shivering, severe muscle stiffness or twitching, loss of coordination, nausea, vomiting, or diarrhea
- Inability to get or keep an erection
- iIrregular menstruation
- Decreased sexual desire
- Swelling of the eyes, face, mouth, lips or throat
- Difficulty breathing or swallowing
- Changes in heartbeat
Levorphanol may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration’s (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).
What should I know about storage and disposal of this medication?
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Flush any levorphanol tablets that are outdated or no longer needed down the toilet so that others will not take them. Talk to your pharmacist about the proper disposal of your medication.
It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org
In case of emergency/overdose
In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can’t be awakened, immediately call emergency services at 911.
While taking levorphanol, you may be told to always have a rescue medication called naloxone available (e.g., home, office). Naloxone is used to reverse the life-threatening effects of an overdose. It works by blocking the effects of opiates to relieve dangerous symptoms caused by high levels of opiates in the blood. You will probably be unable to treat yourself if you experience an opiate overdose. You should make sure that your family members, caregivers, or the people who spend time with you know how to tell if you are experiencing an overdose, how to use naloxone, and what to do until emergency medical help arrives. Your doctor or pharmacist will show you and your family members how to use the medication. Ask your pharmacist for the instructions or visit the manufacturer’s website to get the instructions. If someone sees that you are experiencing symptoms of an overdose, he or she should give you your first dose of naloxone, call 911 immediately, and stay with you and watch you closely until emergency medical help arrives. Your symptoms may return within a few minutes after you receive naloxone. If your symptoms return, the person should give you another dose of naloxone. Additional doses may be given every 2 to 3 minutes, if symptoms return before medical help arrives.
Symptoms of overdose may include the following:
- Slow, shallow, or irregular breathing
- Loss of consciousness
- Limp muscles
- Cold, clammy skin
- Small pupils
- Blurred vision
- Slow heartbeat
- Unusual snoring
What other information should I know?
Keep all appointments with your doctor and the laboratory. Your doctor may order certain lab tests to check your body’s response to levorphanol.
Before having any laboratory test (especially those that involve methylene blue), tell your doctor and the laboratory personnel that you are taking levorphanol.
This prescription is not refillable. If you are taking levorphanol to control your pain on a long term basis, be sure to schedule appointments with your doctor so that you do not run out of medication. If you continue to have pain after you finish your levorphanol prescription, call your doctor.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.