The medication oxybutynin is used to control such problems as urgent, uncontrolled, or frequent urination and other conditions that affect the bladder muscles. Oxybutynin works by relaxing the bladder muscles to prevent urinary problems. However, there are newer drugs available that may have fewer side effects.
If overactive bladder is caused by a urinary tract infection, your child's doctor may prescribe antibiotics to clear up the infection.