More than one-half of all cancer patients use some combination of conventional and complementary medicine, but exactly how this is done and what the outcomes include are poorly understood. This case study reports the successful treatment of metastatic invasive ductal breast carcinoma by 2 physician groups with treatments that combined conventional chemotherapy with nutritional support guided by nutritional and digestive laboratory testing. The goal of minimizing side effects and enhancing outcomes was achieved in this patient who did not receive radiation therapy and is almost 3 y posttreatment with no evidence of recurrence.