Covid-19 - Vitamin D Trial

Spanish Trial Results

76 patients in Spain who tested positive for Covid-19 and who were ill enough to be admitted to hospital, took part in a randomised double blind trial of Vitamin D supplementation. This means no doctors or clinical staff knew which of the patients were given a Vitamin D analogue. Apart from this all were given the best possible care and all other treatments. While the size of the trial was small, the chances of it being in error is 1 in 1000. 50 patients received the vitamin and 26 did not, creating two groups to compare.

Of the 50, only 1 required ICU care and all recovered.

Of the remaining 26, 13 were admitted to ICU, two died and 11 recovered.

The Initial dose was the equivalent of about 100,000 I.U, with follow ups of 50,000 and 10,000. 
A daily skin exposure to 10-15 minutes of around mid-day summer sunshine is about 10,000 I.U, depending on melamine levels & closeness to the equator. Typically this dose is achievable within +/- 35 degrees of the equator, or north of Taupo.  South of this, much of the population of NZ is likely deficient in Vitamin D. 

In the USA some 42% of the population is considered deficient, rising to 82% of black skinned and 70% of Hispanic.

Links for detailed information and fact checking follow:-

Dr John Campbell - Analysis

How much vitamin D to take

Association of Vitamin D & Covid-19

Spanish Trial Results