Effect of herb medicines for urolithiasis on urinary oxalate excretion in rats.

The oxalate content in choreito and urocalun, both herb medicines, is minimal, and their contents of Ca, Mg, and P are also small. A rat experiment was performed to clarify their effect on oxalate excretion. They did not seem to have any adverse effect on urinary oxalate excretion. They had no diuretic effect and did not promote urinary oxalate excretion in rats. Therefore, they can be used in stone-formers for long periods.