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Uses

What is flavoxate used for?

Flavoxate is commonly used to treat the following bladder and urinary tract symptoms.

Flavoxate may also be used for other conditions as determined by your healthcare provider.

How does flavoxate work (mechanism of action)?

Flavoxate increases the amount of pee that your bladder can hold by relaxing a muscle in your bladder.

How is flavoxate supplied (dosage forms)?

Brands and other names

  • Urispas

Dosage forms and strengths

  • 100 mg oral tablets

How should I store flavoxate?

Flavoxate should be stored at room temperature, between 68 F to 77 F (20 C to 25 C). It can be exposed to temperatures between 59 F to 86 F (15 C to 30 C) for shorter periods of time, such as when transporting it. Store in a cool, dry place.

Side Effects

What are the most common side effects of flavoxate?

The most common side effects of flavoxate are listed below. Tell your healthcare provider if you have any of these side effects that bother you.

  • Nausea
  • Dry mouth
  • Dizziness
  • Drowsiness
  • Blurred vision

There may be other side effects of flavoxate that are not listed here. Contact your healthcare provider if you think you are having a side effect of a medicine. In the U.S., you can report side effects to the FDA at www.fda.gov/medwatch or by calling 800-FDA-1088. In Canada, you can report side effects to Health Canada at www.health.gc.ca/medeffect or by calling 866-234-2345.

What are the serious side effects of flavoxate?

While less common, the most serious side effects of flavoxate are described below, along with what to do if they happen.

Severe Allergic Reactions. Flavoxate may cause allergic reactions, which can be serious. Stop taking flavoxate and get help right away if you have any of the following symptoms of a serious allergic reaction.

  • Breathing problems or wheezing
  • Racing heart
  • Fever or general ill feeling
  • Swollen lymph nodes
  • Swelling of the face, lips, mouth, tongue, or throat
  • Trouble swallowing or throat tightness
  • Itching, skin rash, or pale red bumps on the skin called hives
  • Nausea or vomiting
  • Dizziness, feeling lightheaded, or fainting
  • Stomach cramps
  • Joint pain

Warnings & Precautions

Who should not use flavoxate?

Allergies to Ingredients. People who are allergic to any of the following should not take flavoxate.

  • Flavoxate
  • Urispas
  • Any of the ingredients in the specific product dispensed

Your pharmacist can tell you all of the ingredients in the specific flavoxate products they stock.

People who have the following conditions should not take flavoxate.

  • A blockage in your stomach or intestines, also called bowel obstruction
  • Bleeding in your gut
  • A swallowing problem called achalasia
  • Problems peeing or a blockage in your bladder

What should I know about flavoxate before using it?

Do not take flavoxate unless it has been prescribed to you by a healthcare provider. Take it as prescribed.

Do not share flavoxate with other people, even if they have the same condition as you. It may harm them.

Keep flavoxate out of the reach of children.

Flavoxate can cause blurry vision, dizziness, and drowsiness. Do not drive or do other activities that require clear vision or alertness until you know how flavoxate affects you.

What should I tell my healthcare provider before using flavoxate?

Tell your healthcare provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. This will help them determine if flavoxate is right for you.

In particular, make sure that you discuss any of the following.

  • Glaucoma
  • A blockage in your stomach or intestines, also called bowel obstruction
  • Bleeding in your gut
  • A swallowing problem called achalasia
  • Problems peeing or a blockage in your bladder

Other Medicines and Supplements. Flavoxate may interact with other medicines and supplements. Before taking flavoxate, tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. See the Interactions section for more details.

Pregnancy. It is not known if or how flavoxate could affect pregnancy or harm an unborn baby. Tell your healthcare provider if you are or plan to become pregnant.

Breastfeeding. It is not known if flavoxate passes into breast milk. Tell your healthcare provider if you are breastfeeding or plan to breastfeed.

Interactions

Does flavoxate interact with foods or drinks?

There are no known interactions between flavoxate and foods or drinks.

It is unknown if drinking alcohol will affect flavoxate. The risk of drowsiness may be increased if you drink alcohol while taking flavoxate.

Does flavoxate interact with other medicines (drug interactions)?

Flavoxate may interact with certain medicines. Always tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.

This may not be a complete list of medicines that can interact with flavoxate. Always check with your healthcare provider.

Does interact with other drugs you are taking?

Enter your medication into the WebMD interaction checker

Overdose/Missed Dose

What should I do if I accidentally use too much flavoxate?

If you or someone else has used too much flavoxate, get medical help right away, call 911, or contact a Poison Control center at 800-222-1222.

What should I do if I miss a dose of flavoxate?

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and only take the next dose. Do not take double or extra doses.