Cystopurin Cystitis Relief 6 Sachets Cystopurin Cystitis Relief 6 Sachets Cystopurin Cystitis Relief 6 Sachets is a 48-hour treatment for the symptomatic relief of mild urinary tract infections such as cystitis. It contains potassium citrate, which helps reduce the acidity of urine to ease discomfort such as burning and stinging when passing urine. The sachets are cranberry flavoured and dissolve in water for easy use.