TROVET Urinary Struvite ASD (Anti Struvite Diet) is delicious food that provides the desired low acidity of the urine, allowing your cat to heal faster. This dissolves the struvite gravel and stones present in the urine (curative effect). TROVET ASD is formulated to be a complete and balanced diet food. You can therefore give it for life if your cat is prone to struvite formation. Other adult cats can also eat along quietly. Struvite formation is a common but treatable condition. Struvite is the formation of crystals and/or stones in the urinary bladder that are mainly composed of the minerals magnesium, ammonium and phosphate. Proper (low) acidity (pH) of the urine and reduced levels of magnesium in particular in the food reduce the likelihood of struvite formation. By using this special diet food, your cat's problems are better controlled.