The areas where phenolics are effective are as vast as there are people with health problems. There effectiveness borders on the miraculous and appears to be very long lasting. Phenolic therapy offers a wide array of options for the treatment of allergies and other health problems. Like other treatment modalities, however, successful use of these important tools requires some careful study. Enough evaluation and clinical experience has been accomplished, however, to offer the health practitioner reasonable confidence that such time would be well spent.