Yes, Urologists do the injections at the time of a cystoscopy. It can be done as an outpatient. It generally takes two weeks to have a full effect. The primary risks are urinary retention and infection. It is usually reserved for patients that haven't responded or had side effects from medications for overactive bladder. Interstim implants can also be helpful. They require a two week trial period to see if they help before placing the implant.