Urinary S/O Canine effectively dissolves struvite uroliths. An acidic urinary pH is unfavourable to the development of bacteria, which are frequently associated with struvite uroliths.

Undersaturated urine is an environment where crystals cannot proliferate. Thus the urine is unfavourable to the development of struvite and calcium oxalate crystals.

Diluting urine decreases the urinary concentration of struvites and calcium oxalates. The larger urinary volume also ensures regular bladder wash-out.

Magnesium is a component of struvite (magnesium ammonium phosphate) uroliths.