Urinary & bladder stones from phosphorous, magnesium, & ammonium can arise from a certain genetic disposition in cats. Cats whose urinary tracts become oversaturated with magnesium are more prone to the formation of struvit stones. Struvit stones form at a high alkaline p H, so attention must be given to the influence of decreasing urinary p H levels. Through its special recipe, Integra Protect Urinary diet food helps to oppose the re-emergence of struvit stones in cats: Low magnesium content: lowers the depth of magnesium. Contains special urinary substances: controls & reduces the p H of the cat's urine. Integra Protect Urinary cat food has great preventitive properties to support the nutritional needs of cats during their illness, & also for the complete duration of these health problems. Integra Protect Urinary also has a good acceptance level & is very easy for cats to digest. In order to provide optimal care for your cat, it should receive three rations per day. You should also make sure that the pet drinks plenty of fresh water, to increase urination, & promote the "flushing out" process of the urinary tract infection. Integra Protect Urinary is not suitable for oxalate stones. If in doubt, please consult your veterinarian.