Plantain (Plantago asiatica): It is effective for bladder infections, relieving pain and promoting healing. Parsley rt. (Petroselinum hortense): Is good for water retention and urinary tract infections. Parsley regulates fluid balance. Marshmallow rt. (Althaea officinalis): Is useful for inflammation and irritation in the pelvic region. It is best to catch this at the first signs of infection. One should also avoid white sugar, and citrus as these will often make symptoms more painful and feed the infection.