There are a number of drugs that may lead to urinary stones, including: 1, glucocorticoids: long-term clinical use of glucocorticoids can cause bone decalcification, resulting in hypercalciuria. 2, vitamins: daily application of vitamin C more than 500mg, urinary oxalic acid content increased, more than 4g, may induce the formation of calcium oxalate stones; long-term overdose of vitamin D or cod liver oil can lead to 1, 25-bishydroxy vitamin D3 over-synthesis, which in turn prompted the intestinal tract to absorb large amounts of calcium, may eventually lead to kidney stones or kidney calcification. 3, sulfonamides: some sulfonamides are prone to the formation of insoluble acetyl compounds crystals in acidic urine, or can themselves directly form sulfonamide stones.