Vitamin D and covid: "if there is no deficiency it is useless and dangerous to take supplements". The recommendations of the Bfr

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Carlos Laforet Coll
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The German BfR warns that it is useless and can be dangerous to take vitamin D supplements against covid if you do not have a deficiency

Don't store avocado like this: it's dangerous

There are several studies that somehow link a vitamin D deficiency to more unfavorable outcomes in the case of covid-19. This does not mean that we can freely take a supplement of this vitamin, perhaps even in high doses, without first hearing the opinion of a doctor. The German Bfr warns of the risks.





Over the past year we have told you about a number of studies that have examined the role of vitamin D in coronavirus infection. The conclusions are still not certain but, given that some researches support that specific supplements of this vitamin can be useful in the preventive phase, several people have decided independently to take them.

Also read: A year later, here's what we know about vitamin D to prevent covid-19

The German Federal Institute for Risk Assessment (BfR) has recently expressed itself on this issue, explaining that, if there is no deficiency, it is useless and can even be harmful to take a vitamin D supplement. they do not speak of the advantages of taking this vitamin in normal conditions and, among other things, an overdose can expose you to serious contraindications, including kidney damage.

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The Bfr writes in its document "Vitamin D, the immune system and COVID-19" writes:

People who have a good vitamin D intake have not been shown to benefit from additional vitamin D intake. A general recommendation for the use of vitamin D supplements to prevent SARS-CoV-2 infection or severe Covid-19 disease progression is, therefore, currently not justifiable. Making the independent decision to take vitamin D supplements alone in high doses can carry health risks. Higher doses should only be taken under medical supervision and taking into account your individual vitamin D status.

The German body stresses that anyone wishing to supplement vitamin D can do so with a daily dose of up to 20 micrograms (800 international units). A quantity considered safe and recommended for example for the elderly and those who cannot expose themselves to the sun every day.    



In the event of an ascertained vitamin D deficiency, it is advisable to consult a doctor who will indicate the supplement and the right dosage to take based on your specific situation.

In fact, there is no doubt that vitamin D is of fundamental importance for the normal functioning of the immune system. 

Studies show that people with insufficient vitamin D have a higher risk of acute respiratory infections and may benefit from supplements.

In conclusion, we can summarize that it is good to check that you are not deficient in vitamin D, even regardless of the covid, and if necessary act accordingly. But, if we have no problems with the levels of this vitamin, we avoid taking supplements.

Read all of our articles on vitamin D. 

Source: BFR

Read also:



  • Vitamin D: where it is found, what it is used for and how to stock up on it
  • High levels of vitamin D could really reduce Covid infection, the study
  • Vitamin D: symptoms and consequences of a deficiency
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