AntimuscarinicPrescription only
Oxybutynin
Tablet
Quick Summary
Oxybutynin relaxes the bladder muscle.
Overactive bladder
Medical Uses
Overactive bladder: Urgency and urge incontinence.
How it's taken
Take as prescribed, usually once or twice a day.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Dry mouth
Common.
Constipation
Common.
Blurred vision
Sometimes.
Interactions
Other anticholinergic medicines
More side effects.
Critical Warnings
Older people
Can cause confusion.
Glaucoma and urine retention
Not suitable.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Oxybutynin: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Oxybutynin: a medicine to treat symptoms of an overactive bladder(opens in a new tab) · NHS