American doctors have concluded that a high dose of vitamin D fails to improve the condition of patients with moderate to severe COVID-19. The findings were published in the Journal of the American Medical Association.
The double-blind, randomized, placebo-controlled trial enrolled 240 patients with coronavirus who were divided into two groups. One group received a single dose of 200,000 international units (IU) of vitamin D3 found in peanut butter. The control group was given a placebo in the form of peanut butter. All patients received a standard course of treatment including antibiotics and anti-inflammatory drugs.
The main purpose of the study was to test vitamin D as a means of potentially reducing hospital stays. However, the researchers also evaluated its effect on the risk of ICU admission, intubation or death.
It turned out that there was no reason to use a high dose of vitamin D in patients with severe COVID-19. However, this does not mean that there are no positive effects of continuous use of the vitamin.
Older adults and patients with chronic conditions, such as osteoporosis, should have vitamin D levels greater than 30 nanograms per milliliter of blood (ng/mL), experts say. For healthy adults, an acceptable amount is 20 ng/ml.