What may interact with this medicine?

• atropine
• benztropine
• bethanechol
• carbamazepine
• dexamethasone
• dicyclomine
• glycopyrrolate
• hyoscyamine
• ipratropium
• itraconazole or ketoconazole
• medicines for motion sickness
• NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
• other medicines for Alzheimer's disease
• oxybutynin
• phenobarbital
• phenytoin
• quinidine
• rifampin, rifabutin or rifapentine
• trihexyphenidyl

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non- prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medicine?

What side effects may I notice from receiving this medicine?

• allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
• changes in vision
• feeling faint or lightheaded, falls
• problems with balance
• slow heartbeat, or palpitations
• stomach pain
• unusual bleeding or bruising, red or purple spots on the skin
• vomiting
• weight loss

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

• diarrhea, especially when starting treatment
• headache
• indigestion or heartburn
• loss of appetite
• muscle cramps
• nausea

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1- 800- FDA- 1088.