According to a range of scientific research[47], a fully competent immune system is required to maximise the antiproliferative effect of Vitamin C in breast, colorectal, melanoma, and pancreatic tumours. High-dose Vitamin C modulates infiltration of the tumour microenvironment via the cells of the immune system and delays cancer growth in a T cell-dependent manner.
Vitamin C not only enhances the cytotoxic activity of adoptively transferred CD8 T cells but also cooperates with immune checkpoint therapy (ICT) in several cancer types. A combination of this vitamin and ICT can be curative in models of mismatch repair-deficient tumours with a high mutational burden.
More literature [48] indicates that Vitamin C has the potential to be a potent anti-cancer agent when administered intravenously and in high doses (high-dose IVC). Early-phase clinical trials have confirmed the safety and indicated the efficacy of IVC in eradicating tumour cells of various cancer types.
High dose Vitamin C IV therapy has been shown to be safe and well-tolerated in cancer patients and has been scientifically proven to reduce pain and improve quality of life in the palliative care setting.