*However, late recurrences surpassing the observation period cannot be excluded. 50 % of the patients were free of bladder symptom after primary therapy of Cystistat® without any further therapy during the 5 year follow-up1

1. Engelhardt PF, Morakis N, Daha LK, et al. Long-term results of intravesical hyaluronan therapy in bladder pain syndrome/interstitial cystitis. Int Urogynecol J. 2011;22(4):401-5.