Cystitis is a painful and upsetting urinary infection that affects many women and can, if left untreated, end in hospitalisation.
Cranberry juice and capsules are reputedly an effective cure. The theory is that a compound in the berries stops the offending bacteria clinging to the walls of the bladder.
A major overview of several trials by the Cochrane Collaboration in 2009 suggested that cranberry juice could prevent recurrent infections in women, but not cure them.
More recent research suggests that capsules rather than juice might be more effective: 200mg of cranberry extract is the suggested daily amount. It’s definitely worth a try if you suffer from cystitis. Frequently recurring cystitis may need treatment with antibiotics.