Bladder Botox:

If you've tried an anticholinergic medication and are still experiencing leakage or cannot tolerate the side effects, you and your physician may decide that BOTOX® (onabotulinumtoxinA) is right for you. As you plan for treatment with BOTOX® for your urinary incontinence from overactive bladder due to a neurologic condition, you should know what to expect.

BOTOX® is a prescription medicine that is injected into the bladder muscle and used:
To treat overactive bladder symptoms such as a strong need to urinate with leakage or wetting accidents; urgency and frequency in adults when another type of medication (anticholinergic) does not work well enough or cannot be taken

To treat leakage of urine (incontinence) in adults, with overactive bladder due to neurologic condition, who still have leakage or cannot tolerate the side effects after trying an anticholinergic medication