These minimally invasive treatments address different types of bladder-control problems. For overactive bladder, Botox can be injected into selected areas of the bladder muscle through a cystoscope. The medication temporarily reduces excessive muscle contractions, which may decrease urgency, frequency, and urge-related leakage. Urethral bulking therapy is used for certain forms of stress urinary incontinence. A physician injects a soft bulking material into tissue around the urethra to improve its ability to close and reduce leakage during activities that increase abdominal pressure. Because these treatments work differently and treat different problems, your urologist will determine which approach is appropriate based on your symptoms and diagnosis.