OBJECTIVE: Even though there is no established standard therapy for Eosinophilic cystitis (EC), the series of cases guide us in the treatment of patients. We report our therapeutic experience with hydrodistention and complementary methods. In order to establish a standard treatment in patients with EC. METHODS: Retrospective review of the clinical history of a patient diagnosed with eosinophilic cystitis. RESULTS: A 66-year-old woman presented female urethral syndrome 1 year before and was initially treated as a chronic cystitis. After further investigations including cystos-copy and bladder biopsy, she was diagnosed with EC. Urothelial mucosa bleeding was evidenced and cauterization and hydrodistention were performed. After the surgical treatment, corticosteroids and antibiotics were initiated. The maintenance treatment was continued with Vitamin C, Maurita flexuosa and Peumus boldus. The patient's condition has been improving and she is still asymptomatic one year later. CONCLUSION: The efficacy of treatment with hydrodistention, corticosteroids and antibiotics showed positive results in short and long term in this patient. Vitamin C, Maurita flexuosa and Peumus boldus showed favorable results in EC maintenance treatment.