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What is the most important information I should know about flavoxate?

You should not use this medication if you are allergic to flavoxate, or if you have untreated or uncontrolled narrow-angle glaucoma, a blockage in your digestive tract (stomach or intestines), or if you are unable to urinate.

Before using flavoxate, tell your doctor if you have glaucoma or urinary problems.

Flavoxate can cause drowsiness or blurred vision. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

There may be other medicines that can interact with flavoxate. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor. Keep a list with you of all the medicines you use and show this list to any doctor or other healthcare provider who treats you.

Stop using this medication and call your doctor if you have serious side effects such as hot and dry skin, confusion, pounding heartbeats, fluttering in your chest, or if you stop urinating.

Warning

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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What is flavoxate?

Flavoxate reduces muscle spasms of the bladder and urinary tract.

Flavoxate is used to treat bladder symptoms such as frequent or urgent urination, increased night-time 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.

Flavoxate will not treat a bacterial or fungal bladder infection. Infections must be treated with an antibiotic.

Flavoxate may also be used for other purposes not listed in this medication guide.


Precautions

You should not use this medication if you are allergic to flavoxate, or have certain conditions. Be sure your doctor knows if you have:

  • a blockage in your stomach or intestines;
  • a history of stomach ulcer or bleeding; or
  • if you are unable to urinate.

Before using flavoxate, tell your doctor if you are allergic to any drugs, or if you have:

  • glaucoma; or
  • urinary problems.

If you have any of these conditions, you may need a dose adjustment or special tests to safely take flavoxate.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

It is not known whether flavoxate passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Flavoxate can cause drowsiness or blurred vision. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

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Instructions

Seek emergency medical attention if you think you have used too much of this medicine.

Symptoms of a flavoxate overdose are not known.

Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.

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Side-effects

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

Stop using flavoxate and call your doctor at once if you have any of these serious side effects:

  • hot, dry skin and extreme thirst;
  • confusion;
  • pounding heartbeats, fluttering in your chest; or
  • urinating less than usual or not at all.

Less serious side effects may include:

  • dry mouth;
  • blurred vision;
  • nausea, vomiting;
  • drowsiness, nervousness;
  • spinning sensation;
  • headache; or
  • fever.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

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Interactions

Tell your doctor if you are using any other bladder or urinary medications such as darifenacin (Enablex), oxybutynin (Ditropan, Oxytrol), tolterodine (Detrol), or solifenacin (Vesicare).

There may be other drugs that can interact with flavoxate. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

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Disclaimer

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04

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