Intravenous Vitamin C Administration Improves Quality of Life in Breast Cancer Patients During Chemo-/Radiotherapy and Aftercare: Results of a Retrospective, Multicentre, Epidemiological Cohort Study in Germany

This 2011 retrospective multicenter cohort study evaluated the safety and efficacy of intravenous vitamin C (IVC) administration in 125 women with breast cancer (UICC stages IIa–IIIb) during the first postoperative year. Fifty-three patients received 7.5 g IVC weekly alongside standard chemo-/radiotherapy, while 72 served as controls. The IVC group experienced