Generic Name: FESOTERODINE EXTENDED-RELEASE - ORAL
Pronounced: (FES-oh-TER-oh-deen)

Toviaz Oral Interactions

Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop or change the dosage of any medicine before checking with your doctor or pharmacist first.

This drug should not be used with the following medication because very serious interactions may occur:

• pramlintide

If you are currently using the medication listed above, tell your doctor or pharmacist before starting fesoterodine.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of:

• potassium tablets/capsules
• other drugs that can cause dry mouth and constipation (including anticholinergic medications such as atropine/scopolamine, antihistamines such as diphenhydramine, other antispasmodics including dicyclomine, belladonna alkaloids) .

Other medications can affect the removal of fesoterodine from your body, thereby affecting how fesoterodine works. These drugs include azole antifungals (such as ketoconazole/itraconazole), macrolide antibiotics (such as clarithromycin/erythromycin), cimetidine, rifamycins including rifampicin, St John's wort, and some drugs used to treat seizures (such as carbamazepine). This is not a complete list.

Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: certain antihistamines (such as diphenhydramine), anti-anxiety drugs (such as diazepam), anti-seizure drugs (such as phenobarbital), medicine for sleep (such as zolpidem), muscle relaxants, narcotic pain relievers (such as codeine), psychiatric medicines (including phenothiazines such as chlorpromazine or tricyclics such as amitriptyline).

Check the labels on all your medicines (such as allergy, cough-and-cold products) because they may contain ingredients that can cause drowsiness, constipation or blurred vision. Ask your pharmacist about the safe use of those products.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

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