What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. Check with your doctor or health care professional if there is no improvement in your symptoms or if they get worse.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug 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 can make you more drowsy and dizzy. Avoid alcoholic drinks.
If you are going to need surgery or other procedure, tell your doctor that you are using this medicine.
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
- changes in vision
- depressed mood
- feeling faint or lightheaded, falls
- problems with balance
- redness, blistering, peeling or loosening of the skin, including inside the mouth
- slow heartbeat, or palpitations
- stomach pain
- unusual bleeding or bruising, red or purple spots on the skin
- weight loss
Side effects that usually do not require medical attention (Report these 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:
- certain medicines for fungal infections like itraconazole, fluconazole, posaconazole, and voriconazole
- dextromethorphan; quinidine
This medicine may also interact with the following medications:
- antihistamines for allergy, cough and cold
- certain medicines for bladder problems like oxybutynin, tolterodine
- certain medicines for Parkinson's disease like benztropine, trihexyphenidyl
- certain medicines for stomach problems like dicyclomine, hyoscyamine
- certain medicines for travel sickness like scopolamine
- hydrochlorothiazide (HCTZ)
- NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
- other medicines for Alzheimer's disease
- other medicines that prolong the QT interval (cause an abnormal heart rhythm)
- rifampin, rifabutin or rifapentine
- sodium bicarbonate