Urine volume has the greatest effect on the formation of all bladder and kidney crystals, in which a large urine volume reduces the chance of crystal formation. The sodium level is slightly increased to promote water intake and increase urine volume. To help reduce stress and the risk of Feline Idiopathic Cystitis (FIC), three ingredients are added to TROVET Urinary Calm: green tea extract, milk protein hydrolysate and tryptophan.   • Has a urine diluting effect, which helps to reduce the chance of developing FIC and the chance of urolith formation. • Magnesium is at a safe low level, ensuring that long term preventive use causes no risk of hypomagnesaemia. • Limits the uptake of minerals that lead to the formation of struvite.   It is recommended that a veterinarian’s opinion is sought before use. The recommended duration of use for Urinary Calm is up to 6 months in case of struvite stone recurrence and/or oxalate stones formation. After extending the period of use, Urinary Calm can be fed for life as a complete dietary food.   The recommended quantity is dependent on the body weight (see feeding table in the can).