Is there evidence that vitamin C infusions benefit patients with cancer?
There is no evidence to prove that vitamin C infusions make tumours smaller or stop them from growing.
Is there evidence that vitamin C infusions help patients with COVID-19?
No high-quality studies have shown that vitamin C infusions provide any benefits to patients with COVID-19.5 This is confirmed by the Therapeutic Goods Administration (an Australian Government agency), which issued a statement saying there was no evidence to support the use of vitamin C infusions to treat COVID-19.10
What are the side effects of vitamin C infusions?
The most common side effects are:8
- temporary nausea
- discomfort at the injection site.
Although most of these side effects are mild, it is important to know that:
- some people with a kidney disease who had vitamin C infusions developed kidney stones and their kidney function got worse8,9
- if you have G6PD deficiency, you should not have vitamin C infusions, as they could cause a breakdown of your red blood cells1,8
- if you have haemochromatosis, you should not have vitamin C infusions, as they could result in more iron-induced tissue damage.1
Does vitamin C affect cancer treatments?
There are a number of ways in which vitamin C could negatively affect cancer treatments. If you are a cancer patient and you are considering a vitamin C infusion, you should discuss this with your cancer specialist (oncologist).11,12
If you are being treated for multiple myeloma with bortezomib, you should not have a vitamin C infusion, as it may reduce the effectiveness of bortezomib.
Is there a recommended dose and duration of vitamin C infusions?
As current guidelines do not recommend vitamin C infusion for any condition, there is no consensus about the optimal doses, frequency or duration of intravenous vitamin C therapy.13–15
Are vitamin C infusions covered by Medicare?
No, you will have to pay for any vitamin C infusions you have.