Cystopurin sachets contain potassium citrate, which works by alkalising the urine to reduce the burning discomfort associated with cystitis. Each sachet is dissolved in water and taken three times daily for two days; relief is typically noticed within a few hours of the first dose, though individual response varies. Cystopurin is available without a prescription for adults and young people aged 16 and over. Potassium citrate does not treat the underlying bacterial infection responsible for most cystitis episodes - it addresses urinary discomfort only. Symptoms that persist beyond two days, or that are accompanied by fever, back pain, or blood in the urine, require assessment by a GP. Always read the patient information leaflet before use and speak to your pharmacist if you are unsure whether Cystopurin is appropriate for you. Ronaghan's Pharmacy stocks Cystopurin alongside a full range of products for urinary and intimate health. If recurring discomfort is a concern, our pharmacy team can advise on suitable options. You may also find our Thrush & Intimate Treatments range relevant if symptoms overlap.