From the Telegraph this week
Vitamin C can help to prevent severe Covid-19 and speed up recovery from infection, a study suggests, as scientists claim it should become standard treatment in hospitals.
A review of 12 clinical trials, due to be published in the journal Life this week, found administering the vitamin intravenously may improve the level of oxygen in the blood, reduce inflammation and cut a patient’s hospital stay
For more critically ill patients, trials using doses of 6-24g a day intravenously have shown positive benefits in terms of increased survival, and reduced hospital stay, improved oxygenation or reduced inflammation,” said co-author Anitra Carr, of the University of Otago, New Zealand.
Twenty oranges provide one gram of vitamin C, the researchers said, therefore these dosage levels require supplementation.
Plasma concentrations of Vitamin C were very low among 70 to 80 per cent of Covid patients, the review found, suggesting they may benefit from several grams of the vitamin to correct any deficiency.
The review also suggested that vitamin C could help prevent Covid-19 progressing to a severe illness.
One study in the review, conducted in Shanghai, China, looked at 110 patients with moderate Covid, 55 of whom received a dose of vitamin C dependent on their weight, the other half had standard care.
A third fewer patients progressed to severe illness when given the dose, the study suggested.
The review concluded that randomised control trials and retrospective cohort studies show vitamin C “appears to also support positive outcomes in Covid-19 in both inpatient and outpatient settings, leading to a beneficial effect in patients with moderate symptoms”
It comes after a study published by King’s College London earlier this year found taking vitamin C had “no preventive benefit” against Covid-19 infection.
Increasing vitamin D intake had also been suggested to help protect against Covid-19. But research published earlier this year by McGill University in Quebec, Canada, found no difference in the levels of the vitamin between people who did and did not contract the virus.