What should I watch for?
Visit your doctor or health care professional regularly. For this medicine to be most effective you should attend any counseling or support groups that your doctor or health care professional recommends.
You may become more sensitive to narcotics after a period of not using them. This may increase your risk of overdose and death if you start using them again.
Be alert for any symptoms of low blood pressure or slow heart rate, such as dizziness and feeling faint or lightheaded at rest or after standing quickly from a sitting or lying position. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Avoid becoming dehydrated or overheated, which may increase the risk for low blood pressure and fainting. If you experience symptoms of low blood pressure or slow heart rate, do not take your next dose of this medicine until you have talked to your healthcare provider.
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. Alcohol may increase drowsiness or dizziness.
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
- signs and symptoms of a dangerous change in heartbeat or heart rhythm like chest pain; dizziness, fast or irregular heartbeat; palpitations; feeling faint or lightheaded falls; breathing problems
- signs and symptoms of low blood pressure like dizziness; feeling faint or lightheaded, falls; unusually weak or tired
- slow heart rate
Side effects that usually do not require medical attention (report these to your doctor or health care professional if they continue or are bothersome):
- dry mouth
- ringing in the ears
- trouble sleeping
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
- certain medicines for anxiety or sleep
- certain medicines for blood pressure, heart disease, irregular heart beat
- certain medicines for depression like amitriptyline, fluoxetine, sertraline, paroxetine
- certain medicines for seizures like phenobarbital, primidone
- general anesthetics like halothane, isoflurane, methoxyflurane, propofol
- medicines that relax muscles for surgery
- narcotic medicines for pain
- other medicines that prolong the QT interval (cause an abnormal heart rhythm)
- phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine