Last updated on RxList: 2/23/2021
Urispas Side Effects Center

What Is Urispas?

Urispas (flavoxate HCl) is a synthetic urinary tract spasmolytic used to treat bladder symptoms such as frequent or urgent urination, increased nighttime urination, bladder pain, and incontinence (urine leakage). These bladder symptoms are often caused by overactive bladder, prostate enlargement, bladder infections, or irritation of the urethra. Urispas is not an antibiotic, and does not cure infections. Urispas is available in generic form.

What Are Side Effects of Urispas?

Common side effects of Urispas include:

  • nausea,
  • vomiting,
  • dry mouth,
  • headache,
  • drowsiness,
  • dizziness,
  • spinning sensation,
  • blurred vision,
  • nervousness, and
  • fever.

Tell your doctor if you have unlikely but serious side effects of Urispas including:

Dosage for Urispas

The dose of Urispas for adults and children over 12 years of age is one or two 100 mg tablets 3 or 4 times a day. This drug is not recommended for children under 12 years of age.

What Drugs, Substances, or Supplements Interact with Urispas?

Urispas may interact with other bladder or urinary medications such as darifenacin, oxybutynin, tolterodine, or solifenacin. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors.

Urispas During Pregnancy and Breastfeeding

During pregnancy, Urispas should be used only when prescribed. It is not known whether this drug passes into breast milk. Consult your doctor before breastfeeding.

Additional Information

Our Urispas (flavoxate HCl) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


What is urinary incontinence? See Answer
Urispas Consumer Information

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Common side effects may include:

  • nausea, vomiting, dry mouth;
  • headache, dizziness, drowsiness;
  • pounding heartbeats or fluttering in your chest;
  • confusion, nervousness; or
  • rash or itching.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Urispas (Flavoxate Hydrochloride Tablets)


Urinary Incontinence in Women: Types, Causes, and Treatments for Bladder Control See Slideshow
Urispas Professional Information


The following adverse reactions have been observed, but there are not enough data to support an estimate of their frequency.

Gastrointestinal: Nausea, vomiting, dry mouth.

CNS: Vertigo, headache, mental confusion, especially in the elderly, drowsiness, nervousness.

Hematologic: Leukopenia (one case which was reversible upon discontinuation of the drug).

Cardiovascular: Tachycardia and palpitation.

Allergic: Urticaria and other dermatoses, eosinophilia and hyperpyrexia.

Ophthalmic: Increased ocular tension, blurred vision, disturbance in eye accommodation.

Renal: Dysuria.

Read the entire FDA prescribing information for Urispas (Flavoxate Hydrochloride Tablets)

© Urispas Patient Information is supplied by Cerner Multum, Inc. and Urispas Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

Health Solutions From Our Sponsors