‘Ba Zheng San’ is a common Chinese herbal formula for a bladder infection or Urinary Tract Infection (UTI). It works extremely well and will definitely out-perform using cranberry juice or other western herbs! I use the version from Evergreen Herbs. This formula is available from many other companies, but I think this one works the best! Of course, drink plenty of fluids to flush the bladder too (read: plenty of water)! And if one wants to use cranberry juice, I recommend using the non-sugar-added variety and drink about one quart per day for 5-7 days. I also carry a cranberry pill for those hard-core cranberry ‘lovers’: Nature’s Answer Cranberry 2 also includes western anti-bacterial herbs, so this is a good combination formula as well.