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Why is this medication prescribed?

Oxybutynin is a medication primarily prescribed for the treatment of overactive bladder (OAB) and urinary incontinence. It belongs to a class of drugs called anticholinergics or antimuscarinics. OAB is a condition characterized by a sudden and frequent urge to urinate, often accompanied by urinary incontinence (involuntary leakage of urine).

Oxybutynin works by relaxing the muscles of the bladder, reducing its spasms and increasing the bladder’s capacity to hold urine. This helps to decrease the frequency and urgency of urination and control involuntary urine leakage.

In addition to OAB, oxybutynin may also be prescribed for other conditions, such as neurogenic bladder (bladder dysfunction due to nerve damage or neurological disorders), urinary retention (difficulty emptying the bladder), and enuresis (bedwetting) in children over the age of 6.

How should this medicine be used?

Oxybutynin can be used in various forms, such as tablets and extended-release tablets. The specific instructions for using Oxybutynin depend on the formulation prescribed by your healthcare provider. Here are general guidelines:

  • Tablets: Oxybutynin tablets are usually taken two to three times a day, with or without food. It’s important to follow your doctor’s instructions regarding the dosage and frequency. Swallow the tablet whole with a glass of water, without crushing or chewing it.
  • Extended-release tablets: Extended-release tablets are designed to release the medication slowly over time, providing a steady level of Oxybutynin in your body. These tablets are typically taken once a day, with or without food. Follow your doctor’s instructions and swallow the tablet whole without crushing or chewing it.

Always consult your healthcare provider or pharmacist for specific instructions on how to use Oxybutynin, as individual dosages and administration may vary depending on your medical condition and the formulation prescribed. They can provide personalized guidance and address any concerns you may have.

Other uses for this medicine

Here are some other uses and precautions associated with Oxybutynin:

  • Hyperhidrosis: Oxybutynin can be used off-label to treat excessive sweating, a condition known as hyperhidrosis. It helps reduce sweating by blocking the activity of sweat glands.
  • Pediatric Enuresis: Oxybutynin may be prescribed off-label to treat bed-wetting (nocturnal enuresis) in children above the age of 5 when other measures have failed.

What special precautions should I follow?

Regarding special precautions for Oxybutynin, it is important to consider the following:

  • Allergies: Inform your doctor if you have any known allergies to Oxybutynin or any other medications. Allergic reactions to Oxybutynin are rare but can occur.
  • Medical History: Provide a comprehensive medical history to your doctor, particularly if you have certain conditions such as glaucoma, liver or kidney problems, gastrointestinal disorders (e.g., ulcerative colitis), myasthenia gravis, or a history of blockage or retention of urine.
  • Elderly: Elderly individuals may be more susceptible to certain side effects of Oxybutynin, such as confusion, drowsiness, and constipation.
  • Other Medications: Inform your doctor about all the medications you are taking, including prescription drugs, over-the-counter medications, vitamins, and herbal supplements, as some drugs may interact with Oxybutynin and affect its effectiveness or increase the risk of side effects.
  • Pregnancy and Breastfeeding: Oxybutynin should be used during pregnancy or breastfeeding only if the potential benefits outweigh the potential risks. Consult your doctor for advice if you are pregnant, planning to become pregnant, or breastfeeding.

These are general precautions, and it’s important to discuss your specific medical history and any concerns with your healthcare provider before starting Oxybutynin or making any changes to your medication regimen.

What special dietary instructions should I follow?

There are no specific dietary restrictions associated with Oxybutynin. However, it’s generally recommended to take Oxybutynin with water and avoid consuming grapefruit juice, as it may interact with the medication. Grapefruit juice can inhibit certain enzymes responsible for metabolizing Oxybutynin, leading to higher levels of the drug in the body and potentially increasing the risk of side effects.

What should I do if I forget a dose?

If you forget to take a dose of Oxybutynin, follow these general guidelines:

  • Timing: If you realize that you missed a dose close to the time of your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to make up for the missed one.
  • Reminder: To help remember your medication schedule, consider using reminders such as alarms, pill organizers, or smartphone applications. It can be helpful to establish a routine for taking your medication.
  • Consult Your Doctor or Pharmacist: If you frequently forget doses or have concerns about missed doses, it’s important to consult your doctor or pharmacist. They can provide guidance and may suggest strategies to help you remember to take your medication consistently.

What side effects can this medication cause?

Oxybutynin, like any medication, can cause side effects. Not everyone experiences these side effects, and their severity can vary from person to person. Common side effects of Oxybutynin may include:

  • Dry mouth: This is the most frequently reported side effect of Oxybutynin. It can cause a feeling of thirst, altered taste perception, and difficulty speaking or swallowing.
  • Constipation: Oxybutynin can slow down bowel movements, leading to constipation. Increasing fluid intake and consuming a high-fiber diet may help alleviate this side effect.
  • Blurred vision: Oxybutynin can cause temporary blurred vision or decreased visual acuity. It’s important to exercise caution while driving or operating machinery if you experience this side effect.
  • Urinary retention: In some cases, Oxybutynin can cause difficulty in emptying the bladder, leading to urinary retention. If you experience a sudden decrease in urination or difficulty passing urine, seek medical attention immediately.
  • Dry eyes: Oxybutynin may reduce tear production and result in dry eyes. Using lubricating eye drops may help relieve this symptom.
  • Dizziness or drowsiness: Oxybutynin can cause dizziness or drowsiness, which may impair your ability to concentrate or perform tasks that require alertness. Avoid activities that require mental alertness until you know how the medication affects you.
  • Flushing or overheating: Some individuals may experience episodes of flushing or increased body temperature while taking Oxybutynin.
  • Other less common side effects: These may include headache, stomach upset, nausea, nervousness, confusion, difficulty sleeping (insomnia), and skin reactions.

It’s important to note that this is not an exhaustive list of side effects, and others may occur. If you experience any persistent or severe side effects while taking Oxybutynin, it is important to contact your healthcare provider for further evaluation and guidance.

What should I know about storage and disposal of this medication?


  • Follow the storage instructions provided by your healthcare provider or the information leaflet that accompanies the medication.
  • Typically, Oxybutynin should be stored at room temperature, away from moisture and heat.
  • Keep it out of reach of children and pets to prevent accidental ingestion.


  • Dispose of Oxybutynin properly according to local regulations or guidelines.
  • Do not flush Oxybutynin down the toilet or pour it into drains unless instructed to do so.
  • If you are unsure about the proper disposal method, consult your pharmacist or local waste disposal authorities for guidance.

In case of emergency/overdose

  • If you suspect an overdose or experience severe symptoms, call emergency services immediately or contact your local poison control center.
  • Symptoms of an overdose may include extreme drowsiness, confusion, hallucinations, flushed skin, fever, irregular heartbeat, difficulty breathing, and seizures.
  • Be prepared to provide information such as the amount of medication taken, the time of ingestion, and the person’s age and weight.

What other information should I know?

  • Inform your healthcare provider about all the medications, vitamins, herbal supplements, and over-the-counter drugs you are taking to avoid potential interactions.
  • Attend regular follow-up appointments with your doctor to monitor the effectiveness of Oxybutynin and discuss any concerns or side effects you may be experiencing.
  • Oxybutynin may affect your ability to tolerate heat, so take precautions in hot weather to prevent overheating or dehydration.
  • If you are scheduled for surgery, inform your surgeon or anesthesiologist about your Oxybutynin usage, as it may interact with certain anesthetics.

Remember to always follow your healthcare provider’s instructions and consult them or a pharmacist if you have any specific questions or concerns about the storage, disposal, emergencies, or other aspects of using Oxybutynin.

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