How do you manage vitamin D dosing in patients with nephrolithiasis and hypercalciuria who require supplemental vitamin D for treating other medical conditions?  

This is a common treatment for osteopenia/osteoporosis. For calcium stone formers, I watch for hypercalcemia and/or hypercalciuria. If present, I reduce the dose of calcium and/or vitamin-D until their urinary parameters normalize. Otherwise, I think they can take these medications safely in standar...