Ascorbic acid (vitamin C, ascorbate) has a controversial...

Ascorbic acid (vitamin C, ascorbate) has a controversial history in cancer treatment, ... Observational reports described ascorbate, given in pharmacologic doses of 10 g daily, as effective in treating some cancers and in improving patient well-being. Subsequently, the same dose had no effect on patient well-being and survival in two double-blind placebo-controlled trials, and ascorbate was discarded as a treatment modality.