Butorphanol Side Effects
What should I watch for?
Tell your doctor or health care professional if your pain does not go away, if it gets worse, or if you have new or a different type of pain. You may develop tolerance to the medicine. Tolerance means that you will need a higher dose of the medicine for pain relief. Tolerance is normal and is expected if you take the medicine for a long time.
Do not suddenly stop taking your medicine because you may develop a severe reaction. Your body becomes used to the medicine. This does NOT mean you are addicted. Addiction is a behavior related to getting and using a drug for a non-medical reason. If you have pain, you have a medical reason to take pain medicine. Your doctor will tell you how much medicine to take. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects.
If you are also taking a narcotic medicine for pain or cough or another medicine that also causes drowsiness, you may have more side effects. Give your health care provider a list of all medicines you use. Your doctor will tell you how much medicine to take. Do not take more medicine than directed. Call emergency for help if you have problems breathing or unusual sleepiness.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
This medicine will cause constipation. Try to have a bowel movement at least every 2 to 3 days. If you do not have a bowel movement for 3 days, call your doctor or health care professional.
Your mouth may get dry. Chewing sugarless gum or sucking on hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.
This medicine may be used to treat migraines. If you take migraine medicines for 10 or more days a month, your migraines may get worse. Keep a diary of headache days and medicine use. Contact your healthcare professional if your migraine attacks occur more frequently.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
body aches or pain
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
cough producing mucus
difficult or labored breathing
fast, irregular, pounding, or racing heartbeat or pulse
feeling faint, dizzy, or lightheaded
feeling of warmth or heat
flushing or redness of the skin, especially on the face and neck
loss of voice
shakiness in the legs, arms, hands, or feet
tightness in the chest
trembling or shaking of the hands or feet
unusual tiredness or weakness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
Incidence not known
Bluish lips or skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Change in consciousness
extremely shallow or slow breathing
loss of consciousness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
sleepiness or unusual drowsiness
Bad or unusual or unpleasant (after) taste
continuing ringing or buzzing or other unexplained noise in the ears
difficulty having a bowel movement (stool)
false or unusual sense of well-being
fear or nervousness
lack or loss of strength
loss of appetite
pain or tenderness around the eyes and cheekbones
tender, swollen glands in the neck
trouble with swallowing
unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
Incidence not known
Dizziness or lightheadedness
false beliefs that cannot be changed by facts
feeling of constant movement of self or surroundings
sensation of spinning
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.