What's a fast and painless way to pass a kidney stone?

Stones are painful: Stones cause pain as they pass through your urinary system. The focus should be on passing the stone quickly which is usually achieved by increasing the urine flow rate by drinking or receiving (through an iv) large amounts of fluid.

Kidney stones: Medical "expulsive therapy" involves using one or more medications (tamsulisin, ketorolac etc) to dilate and/or relax the ureter, in conjunction with pain control and vigorous oral hydration. The success rate of this approach depends on the size of the stone, your particular ureteral anatomy and your willingness to endure some discomfort in the process.