By Medically reviewed by Panel Perubatan Hello Doktor


What is Genurin® (flavoxate) used for?

Flavoxate is an anticholinergic. It works by decreasing muscle spasms of the bladder.

Genurin® is commonly used for relieving pain and urgency of urination as well as nighttime urination associated with certain medical conditions.

It may be used in combination with other medicines to treat ulcers. It may also be used for other conditions; ask your doctor for more information.

How should I take Genurin® (flavoxate)?

Use flavoxate as directed by your doctor. Check the label on the medicine for exact dosing instructions.

Flavoxate may be taken with or without food. If stomach upset occurs, take with food to reduce stomach irritation.

Ask your health care provider any questions you may have about how to use flavoxate.

How do I store Genurin® (flavoxate)?

Genurin® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Genurin® in the bathroom or the freezer. There may be different brands of Genurin® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Genurin® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Genurin® (flavoxate)?

Before using this drug, tell your doctor if:

  • You are allergic to any ingredient in flavoxate.
  • You are pregnant, planning to become pregnant, or are breastfeeding.
  • You are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement.
  • You have allergies to medicines, foods, or other substances.

Is it safe during pregnancy or breastfeeding?


If you become pregnant while taking flavoxate, discuss with your doctor the benefits and risks of using flavoxate during pregnancy.


It is unknown if flavoxate is excreted in breast milk. If you are or will be breastfeeding while you are using flavoxate, check with your doctor or pharmacist to discuss the risks to your baby.

Side effects

What side effects can occur from Genurin® (flavoxate)?

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most common side effects persist or become bothersome:

  • Blurred vision
  • Constipation
  • Decreased sweating
  • Difficulty sleeping
  • Dizziness
  • Drowsiness
  • Dry mouth
  • Headache
  • Loss of taste
  • Nausea
  • Nervousness

Seek medical attention right away if any of these severe side effects occur:

  • Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue)
  • Diarrhea
  • Difficulty focusing your eyes
  • Difficulty urinating
  • Rapid heart rate
  • Unusual weakness
  • Vomiting

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with Genurin® (flavoxate)?

Genurin® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Genurin® (flavoxate)?

Genurin® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Genurin® (flavoxate)?

Genurin® (flavoxate)  may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.

These health conditions are:

  • An enlarged prostate or urinary problems
  • Glaucoma
  • Stomach bleeding
  • Difficulty swallowing due to esophagus problems
  • Urinary blockage
  • A bowel obstruction
  • Rectal bleeding


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Genurin® (flavoxate).

What is the dose of Genurin® (flavoxate) for an adult?

Adults and children over 12 years of age

The recommended dose is one 200 mg tablets, 3 or 4 times a day. With improvement of symptoms, the dose may be reduced.

What is the dose of Genurin® (flavoxate)  for a child?

The dosage has not been established in children under 12 years of age. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.

How is Genurin® (flavoxate) available?

Genurin® is available in the following dosage forms and strengths:

  • Genurin® 200mg tablet

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Genurin®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

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Review Date: February 8, 2017 | Last Modified: December 19, 2019

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