Cystophan is a drug for idiopathic cystitis prevention and treatment in cats. Idiopathic cystitis is a bladder and urethra disease. Even though this disease has a name, its occurrence exact cause has not been established. Idiopathic cystitis affects animals that sharply react to stressful situations: a change in residence, a change in the diet type, a change in the feeding regime, changes in family composition, conflicts with relatives, etc. Before using the drug, you need to consult a veterinarian.