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What Is Fesoterodine Fumarate?

Meshell Powell
Meshell Powell

Fesoterodine fumarate is a prescription medication used to treat symptoms of overactive bladder such as urinary urgency, frequency, and incontinence. This drug is believed to work by slowing the bladder contractions associated with overactive bladder. Some of the most frequently reported side effects of fesoterodine fumarate include dry mouth, infection, and gastrointestinal disturbances. More serious side effects that should be reported to a doctor right away include swelling, chest pain, and difficulty breathing. Any specific questions or concerns about the use of fesoterodine fumarate in an individual situation should be discussed with a doctor or other medical professional.

Overactive bladder is a medical condition that causes the muscles of the bladder to contract involuntarily. This can lead to feelings of urinary urgency, frequent urination, or bladder incontinence. A doctor may prescribe fesoterodine fumarate alone or in combination with other treatment methods to manage the symptoms of this condition.


The majority of patients who use fesoterodine fumarate are able to tolerate the medication without experiencing any particularly bothersome side effects. Dry eyes or mouth are among the most commonly reported side effects of this medication. Over-the-counter eye drops can often provide relief for dry eyes, and breath mints or frequent sips of water may help treat dry mouth.

Gastrointestinal disturbances may be experienced when taking fesoterodine fumarate. Nausea, constipation, and heartburn are specific digestive problems that may occur during treatment with this drug. Severe abdominal pain or uncontrolled vomiting should be reported to a doctor for further medical evaluation.

Serious fesoterodine fumarate side effects are relatively rare and may include the development of respiratory or urinary tract infections. Prescription antibiotics are typically used to treat these infections, although severe complications may develop if an infection is left untreated for a prolonged period of time. Swelling of the hands or feet may indicate complications regarding kidney function and should be reported to a doctor right away.

A rare but potentially life-threatening type of allergic reaction known as anaphylaxis may occur when taking fesoterodine fumarate, even if this drug has been well tolerated in the past. Symptoms such as facial swelling, chest pain, or difficulty breathing are common anaphylactic symptoms and require emergency medical treatment. Early life-support measures such as oxygen therapy or an injection of a medication designed to help control this type of reaction can begin on the ambulance, so a caregiver should not attempt to drive the patient to the hospital unless absolutely necessary.

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