What should I watch for?
Your condition will be monitored carefully while you are receiving this medicine.
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.
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.
The use of this medicine may increase the chance of suicidal thoughts or actions. Pay special attention to how you are responding while on this medicine. Any worsening of mood, or thoughts of suicide or dying should be reported to your health care professional right away.
Side Effects to watch for
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- breathing problems
- feeling faint or lightheaded, falls
- fever, sore throat
- pain at site where injected
- problems with balance, talking, walking
- redness, blistering, peeling or loosening of the skin, including inside the mouth
- slow heartbeat
- unusual bleeding or bruising
- unusually weak or tired
- worsening of mood, thoughts or actions of suicide or dying
- yellowing of skin or eyes
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
What may interact with this drug?
Do not take this medicine with any of the following medications:
This medicine may also interact with the following medications:
- antihistamines for allergy, cough and cold
- female hormones, like estrogens or progestins and birth control pills
- kava kava
- MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
- medicines for depression, anxiety, or psychotic disturbances
- medicines for seizures
- medicines for sleep
- muscle relaxants
- narcotic medicines for pain
- other barbiturates
- steroid medicines like prednisone or cortisone