Urethral bulking is a relatively non-invasive surgical treatment option for stress incontinence and an alternative to surgery. This treatment has been around for many years (with different substances) and involves injecting the bladder neck (through the urethra) with a bulking substance which obstructs the flow of urine. The Bulking we use is called Bulkamid. It is soft and does not induce scarring around it and no allergies have been reported.