The primary findings show a small overall benefit for a-blockers as MET for ureteric stones but no benefit with CCBs. a-blockers show a greater benefit for large (>5 mm) ureteric stones and those located in the distal ureter, but no benefit for smaller or more proximal stones. a-blockers are associated with a greater risk of side-effects compared to placebo or CCBs. 2017 Production and hosting by Elsevier B.V. on behalf of Arab Association of Urology. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
Only a minority of patients with ureteric calculi require surgical intervention. Uncomplicated ureteric stones up to 10 mm can be given a trial of MET initially. The trial period may be extended up to 12-weeks depending on the control of symptoms and downward movement of the stone.