Medical Expulsive Therapy (MET)
If your stone is likely to pass with urine, your doctor may prescribe drugs (so called alpha-blockers or nifedipine) to help you pass the stone faster and to limit pain while it moves. This is called Medical Expulsive Therapy (MET) and it is most effective for ureteral stones.
Alpha-blockers are not registered as drugs for stone removal (off-label), but they can be helpful when passing stones. If you want MET, your doctor will discuss the possible side-effects of the drugs with you.
If you are in a lot of pain, if you have an infection, or if your kidneys do not function well, MET is not an
option. Your practitioner will discuss other treatment options with you.
During MET you should see your doctor regularly – how often depends on his or her recommendation. The doctor needs to check if the stone keeps moving and if your kidneys continue to function well.