The U.S. FDA-approved Fesoterodine fumarate for treating symptoms of an overactive bladder on October 31, 2008. Fesoterodine fumarate is an antimuscarinic agent.

Fesoterodine fumarate treats symptoms associated with an overactive bladder, such as urgency incontinence (inability to control bladder emptying), sudden urination urges, and increased urinary frequency. 

Take the Fesoterodine fumarate as your physician advises. Usually, the tablets will be taken with or without food. Do not crush, chew, or open the medicine. Your physician will decide the correct dosage and duration based on age, body weight, and disease condition. Only stop taking the tablet if your doctor advises you to stop.

The most common side effects of Fesoterodine fumarate are difficulty in sleeping, dry eyes, throat, dizziness, dysuria (painful or difficult urination), constipation, drowsiness, nausea, and headache. Serious side effects while taking Fesoterodine fumarate are angioedema ( swelling of the face, mouth, or throat).

Fesoterodine fumarate should not be taken if you have allergies to Fesoterodine or Fructose, inability to empty your bladder (urinary retention), slow stomach emptying (gastric retention), narrow-angle glaucoma, excessive muscle weakness, severe ulcerative colitis, abnormally large colon. It is not advised to consume this medicine if you have if you are taking specific medications for HIV, depression, and fungal or bacterial infections. Don't consume this medicine if you are pregnant or planning to get pregnant or breastfeeding. Before taking Fesoterodine fumarate, Notify your doctor if you have any heart conditions such as abnormal ECG (QT prolongation) or taking medications that may cause it, slow heart rate (bradycardia), myocardial ischemia, irregular heartbeat, heart failure, hypokalemia (low potassium levels in the blood).

Before taking Fesoterodine fumarate, it is important to consult with your doctor if you have difficulty emptying your bladder, decreased bowel movements or severe constipation, narrow-angle glaucoma, serious kidney or liver problems, autonomic neuropathy, a gastrointestinal disease affecting food passage or digestion, heartburn, belching, or urinary tract infection. Your doctor may adjust your dose or prescribe additional medications based on your situation.

Keep out of sight and reach of pets and children. Do not freeze the medicine. Do not store above 25°C. Always check the expiry date before consuming it. Liver, heart, and kidney patients should take Fesoterodine fumarate cautiously and inform their doctor about all the underlying medical conditions. Do not stop the medicine until your doctor advises. Do not double-dose the medicine to make up for a forgotten dose. Do not breastfeed while taking Fesoterodine fumarate unless your doctor advises. Notify your doctor if you experience any serious side effects. Your medical professional will inform you if you need any dose adjustments. Contact your doctor for more information.

1. Laboratorios Normon, S.A., Electronic Medicines Compendium (EMC), [Revised on February 2022] [Accessed on 5th June 2023], *Microsoft Word - PL-Fesoterodine-clean (medicines.org.uk)
2. Pfizer, US Food and Drug Administration; [Revised on April 2008] [Accessed on 5th June 2023], label (fda.gov)

The drug information on this page is not a substitute for medical advice. It is meant for educational purposes only. For further details, consult your doctor about your medical condition to know if you are eligible to receive this treatment.