In spite of this, urinary infections may still break through and need a course of a different treatment. Vitamin C acts by making the urine acid and this discourages some of the bacteria which cause urinary infections. Cranberry juice helps to clear infections and debris after operations on the bladder. If enough is given, cranberry juice may also help to prevent urinary infections. Poor drainage from the bladder encourages infections to spread to the kidneys where they may cause damage.
Good drainage is as important as fluid intake.
Intermittent catheterisation ensures good drainage and protects the kidneys. It also makes incontinent people much drier.