Oxybutynin - oral

Patient Medicine Information
Why do I need this medicine?
Oxybutynin is used to treat urinary problems due to an overactive bladder. This medicine helps decrease the urge and frequency of urination.
How do I take this medicine?
Take Oxybutynin exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

You may take this medicine with or without food. Try to take it at the same time each day.

If you are taking the extended-release type of tablet (usually labelled “ER”), swallow it whole. Do not divide, chew or crush the tablet.

Oxybutynin must be taken regularly for it to be effective. Continue taking this medicine even when you feel better. Do not stop taking it unless instructed by the doctor.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?
Alert your doctor if you have the following conditions:

- glaucoma (an increased pressure in the eye)
- blocked bowel
- inability or problems emptying your stomach or bladder
as Oxybutynin may not be suitable for you.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:

- liver disease
- kidney disease
- heart disease
- nerve disorder
- enlarged prostate
- thyroid disease
- myasthenia gravis (muscle weakness disorder)
- heartburn (food or acid from your stomach backs up into your mouth, leaving a sour or bitter taste)
- hiatal hernia (condition when part of the stomach extends through the diaphragm)
- dementia (group of symptoms affecting thinking and social abilities)
- Parkinson’s disease (a disorder that affects movement of a person, causing symptoms such as tremors, muscle stiffness, slowed movement and impaired balance or walking)

Let your doctor know if you are pregnant or breastfeeding.

Oxybutynin may reduce sweating and may make your body temperature rise. Discuss with your doctor if you frequently need to exercise, participate in any activity or work in a hot environment.
What side effects could I experience?
Oxybutynin may cause drowsiness or some problems with your eyesight. If affected, do not drive or take part in any activity in which you need to be alert or need to see clearly.

Other side effects include any of the following: dry mouth, indigestion, constipation, nausea, difficulty sleeping and nervousness.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:
- breathlessness
- swelling of the face, lips, tongue
- hallucinations (seeing, hearing or feeling things that are not existent)

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:

- medicines for colds or allergy e.g. chlorpheniramine
- medicines to treat fungal infection e.g. ketoconazole, itraconazole, fluconazole
- antibiotics e.g. clarithromycin, erythromycin
- medicines to treat heart disease e.g. digoxin
- medicines for mood disorder e.g. clozapine
- medicines to treat depression e.g. amitriptyline
- medicines for Parkinson's disease e.g. levodopa, amantadine

This list does not include all medicines that may interact with Oxybutynin.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children. Protect from light and moisture.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on oxybutynin - oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2022 MIMS. All rights reserved. Powered by MIMS.com
Register or sign in to continue
Asia's one-stop resource for medical news, clinical reference and education
Already a member? Sign in
Register or sign in to continue
Asia's one-stop resource for medical news, clinical reference and education
Already a member? Sign in