Oxybutynin
Also sold as: Ditropan
Prescription neededBladder, prostate and men's health
Comes as:TabletSyrup
Usual adult dose
Usual adult dose: 2.5 to 5 mg two or three times a day; do not take more than 20 mg a day. Older people often start with 2.5 mg twice a day.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- dry mouth
- constipation
- blurred vision
- drowsiness
- dizziness
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- unable to pass urine
- confusion or seeing things (especially in older people)
- eye pain with blurred vision
Do not take it, or take care, if
- Narrow-angle glaucoma
- Unable to empty the bladder or blockage of the bowel
- Myasthenia gravis
- Older people with memory problems (use with caution)
Interactions
Medicines that can react with this one.
Moderate1 medicineTake together only with care. Ask your doctor or pharmacist.
- Amitriptyline
Both have anticholinergic effects; together they increase dry mouth, constipation, urine retention and confusion.