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Solifenacin Side Effects

In Summary

Commonly reported side effects of solifenacin include: constipation and xerostomia. Other side effects include: urinary tract infection and blurred vision. See below for a comprehensive list of adverse effects.

For the Consumer

Applies to solifenacin: oral tablet

As well as its needed effects, solifenacin may cause unwanted side effects that require medical attention.

Severity: Major

If any of the following side effects occur while taking solifenacin, check with your doctor immediately:

Less common:
  • Bladder pain
  • bloody or cloudy urine
  • chills
  • decrease in the frequency of urination
  • decrease in urine volume
  • difficult, burning, or painful urination
  • difficulty in passing urine (dribbling)
  • fever
  • frequent urge to urinate
  • painful urination
  • swelling of the lower legs
  • unusual tiredness or weakness
Incidence not known:
  • Bloating or swelling of the face, arms, hands, lower legs, or feet
  • chest pain or discomfort
  • fainting
  • irregular heartbeat recurrent
  • irregular or slow heart rate
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • rapid weight gain
  • shortness of breath
  • tingling of the hands or feet
  • unusual weight gain or loss

Severity: Minor

Some solifenacin side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

Less common:
  • Acid or sour stomach
  • belching
  • body aches or pain
  • congestion
  • cough
  • diarrhea
  • discouragement
  • feeling sad or empty
  • general feeling of discomfort or illness
  • headache
  • heartburn
  • hoarseness
  • indigestion
  • irritability
  • joint pain
  • lack of appetite
  • loss of interest or pleasure
  • lower back or side pain
  • muscle aches and pains
  • nervousness
  • pounding in the ears
  • runny nose
  • shivering
  • slow or fast heartbeat
  • sore throat
  • stomach discomfort, upset, or pain
  • sweating
  • tender, swollen glands in the neck
  • tiredness
  • trouble concentrating
  • trouble with sleeping
  • trouble with swallowing
  • upper abdominal or stomach pain
  • voice changes
Incidence not known:
  • Hives or welts
  • itching
  • redness of the skin
  • skin rash

For Healthcare Professionals

Applies to solifenacin: oral tablet


Gastrointestinal side effects have been reported the most frequently. These have included dry mouth (7.7% to 27.6%) and constipation (3.7% to 13.4%). Dyspepsia (1.4% to 3.9%), nausea (1.7% to 3.3%), abdominal pain (upper) (1.2% to 1.9%), and vomiting (0.2% to 1.1%) have also been reported. Gastrointestinal side effects reported postmarketing have included decreased appetite, gastroesophageal reflux disease, and ileus.


Respiratory side effects have included cough (0.2% to 1.1%). Respiratory side effects reported postmarketing have included dysphonia.[Ref]


Psychiatric side effects have included depression (0.8% to 1.2%). Confusion and hallucinations have been reported during postmarketing experience.[Ref]


Ocular side effects have included blurred vision (3.8% to 5.9%) and dry eyes (0.3 to 1.6%). Anticholinergic side effects including fixed and dilated pupils have been reported in patients with chronic use of or at doses higher than the maximum recommended dose. Ocular side effects reported postmarketing have included glaucoma.[Ref]

Nervous system

Nervous system side effects have included dizziness (1.8% to 1.9%) and tremors. Headache, confusion, hallucinations, somnolence, and delirium have been reported during postmarketing experience.[Ref]


Genitourinary side effects have included urinary tract infections (2.8% to 4.8%) and urinary retention (1.4%).[Ref]


In general, the most frequently reported side effects have included dry mouth and constipation and the incidence of these side effects was higher in 10 mg compared to 5 mg dose group. In a four 12-week double-blind clinical trial, there were three intestinal serious side effects in patients, all treated with 10 mg. The overall rate of serious side effects was 2%. Compared to twelve weeks of therapy, the incidence and severity of side effects were similar in patients who remained on therapy for up to 12 months. The most frequent reason for discontinuation due to a side effect was dry mouth (1.5%).[Ref]


A cardiac electrophysiologic study evaluating the QT interval at the time of peak plasma concentrations, following 10 and 30 mg solifenacin doses, has reported a QT prolongation effect. The effect appeared greater with the highest solifenacin dosage, although the effect did not appear as large as that of the positive control moxifloxacin at its therapeutic dose.[Ref]

Cardiovascular side effects have included hypertension (0.5% to 1.4%). A prolonged QT interval effect has been reported during cardiac electrophysiologic studies. Torsades de Pointes have been reported during postmarketing experience. Other cardiovascular side effects reported postmarketing include atrial fibrillation, tachycardia and palpitations.[Ref]


Dermatologic side effects have included dry skin and postmarketing reports of exfoliative dermatitis and erythema multiforme.[Ref]


Immunologic side effects have included infections. These have included influenza (0.9% to 2.2%) and pharyngitis (0.3% to 1.1%).[Ref]


Metabolic side effects have included heat prostration with the use of anticholinergic drugs, similar to solifenacin, in hot environments. Metabolic side effects reported postmarketing have included hyperkalemia.[Ref]


Hypersensitivity side effects including angioedema, rash, pruritus, and urticaria have been reported during postmarketing experience.[Ref]


Other side effects have included fatigue (1% to 2.1%) and edema of the lower limbs (0.3% to 1.1%).[Ref]


Renal side effects reported postmarketing have included renal impairment.[Ref]


Hepatic side effects reported postmarketing have included liver disorders mostly characterized by abnormal liver function tests (AST, ALT, and GGT).[Ref]


Musculoskeletal and connective tissue side effects reported postmarketing have included muscular weakness.[Ref]


1. "Product Information. VESIcare (solifenacin)." GlaxoSmithKline, Research Triangle Park, NC.

2. Epstein BJ, Gums JG, Molina E "Newer agents for the management of overactive bladder." Am Fam Physician 74 (2006): 2061-8

It is possible that some side effects of solifenacin may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

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