Comments on controversies on the importance of vitamin C in oncology

Abstract

Intravenous administration of high doses of vitamin C may reduce toxicity of chemotherapy. However, there is no high-quality evidence to suggest that this treatment in cancer patients enhances the antitumor effects.

Placebo controlled trials are needed. Therapy with high dosage of vitamin C is non-toxic and may be used as complementary treatment when conventional anticancer therapy has to be terminated.

Keywords

• vitamin C
• high intravenous dosage
• cancer