London, February 13 (IANS): High doses of Vitamin C can help boost the ability of the chemotherapy process to kill cancer cells, says a new research. According to US scientists from University of Kansas, if Vitamic C is given by injection then it could be a potentially safe, effective and low-cost treatment for ovarian and other cancers, reports femalefirst.co.uk. In a study of 27 patients newly diagnosed with stage three or four ovarian cancer, researchers found that patients who were injected with a high dose of Vitamin C experienced fewer negative side effects from their treatment. They also found that Vitamin C can help to kill cancer cells without harming healthy cells.