Alfa-casozepine has a calming effect, L-tryptophan has a positive effect on states of mind such as restlessness, anxiety, sleep and eating behaviour and. The special combination of amino acids and vitamins in Royal Canin Calm Diet support skin functions, reduce risk of skin irritations and limit moisture loss through the skin. Dietary fibre combined with easily digestible proteins optimise digestion and intestinal flora. A combination of fermentable and non-fermentable dietary fibres reduces the formation of hairballs and promotes excretion. Under-saturation of the urine (low S/O Index) reduces the risk of struvite and calcium oxalate stone formation.