Vitamin D

The Utility Vitamin D in Relation to Covid-19

Vitamin D

Vitamin D has various forms. It’s inactive or initial form cholecalciferol is produced in the skin when exposed to sunlight, and can also  be ingested from a few natural foods including: fatty fish, mushrooms exposed to sunlight, and supplements including those commonly added to cow’s milk found in the grocery store.

This ingested or skin-produced form of vitamin D is inactive, and must undergo two modifications called hydroxylations to become active vitamin D, called calcitriol. These two steps occur first in the liver , then in the kidneys. Calcitriol has multiple biologic effects and acts in many ways as a hormone. It is involved in controlling calcium and phosphate levels and metabolism; this involves intestinal absorption and bone metabolism. It has other effects on cell growth, neuromuscular physiology, immune function, and limits inflammation.

Several scientific observations support the role of Vitamin D in both the prevention and treatment of Covid-19. First is that persons deficient in vitamin D are more likely to test positive for the SARS-CoV2 virus. Second is that persons who experience acute respiratory failure with this virus, are more likely to be Vitamin D deficient. Third is that patients hospitalized with covid-19 have been found to be much less likely to require admission to the intensive care unit, if they are given high doses of Vitamin D.   Fourth, is a correlation found that Hispanic and Black sub-populations have higher incidences of vitamin D deficiency, and are also disproportionately affected by Covid-19.

Moderate sun exposure, and/or ingesting vitamin D supplements are reasonable ways to ensure adequate vitamin D levels. 1000 to 3000 IU’s of Vitamin D are common and well tolerated doses.


Many physicians recommend Vitamin D supplementation of 3000 IU daily for prevention and treatment of covid-19.  


    • Canadian guy

      I’m not sure if this site is legitimate. The contact us form seems to not function. FYI the video he referenced by the Irish doctor has been debunked. If my comment here is taken down I will take this as proof the site is not legitimate.

      Re: video

      This woman has been debunked by the head author of the study she refers to in the video over and over again. You can easily find it searching for the title of the article and Reuters (a major news organization). Please do your due diligence and don’t just accept anything you see because it fits your point of view. The video is incorrect in many ways.

      • drtrozzi

        Hi Canadian Guy.
        Firstly, thanks for letting us know that the contact form was giving you trouble, I’ll look into it and fix it if there’s a problem. You stated some very good advice, “Do your due diligence and don’t just accept anything you see because it fits your point of view.”
        You should know that Reuters really don’t have your best interest in mind, I say this with your well being in mind. I can’t recommend you accept their fact checks just because they have a reputation of being a big organization. They’re owned by the Rothchilds, and if you know your history, that would be enough.
        Here is an article to get you started:

        I’d also recommend the Plandemic Series, in particular part 2 as it clearly reveals’ how all of the major news organizations are owned and used by the same small group of people to push a horrible agenda on mankind. Here’s a link:

        You may be fortunate to get less algorithmically bias search results if you use DuckDuckGo, rather than Google, though they unfortunately use Microsoft owned Bing on their backend, and government owned media still pollute it vigorously.
        I may also recommend you explore our ‘Covid Deception’ section, under ‘covid resources’ for more information regarding the scam.

        -Ryan from the Trozzi Team

        • Explain

          You didn’t talk about the detrimental effects of excessive vitmain D. Also many people are already on prophylactic vitamin D and they’re still getting sick.

          • Donna

            They (your doctors) try to tell you there are detrimental effects. But they can’t really tell you what they are.
            My pcp had a fit when my D level tested at 94. (They say 34 is normal but most people that don’t supplement test much lower). Anyway she wanted me to back off, I did for a bit, until I felt a cold coming on…you should know I hadn’t had one in 13+ years since I started taking D3. I immediately started taking my regular dose and haven’t had a sniffle since. Additionally, I was unknowingly exposed to someone (for 5 hours) who tested positive for Covid the next day. I tested negative and never contracted any symptoms.

  1. Kallie

    I am 82 years of age and overweight. I have taken 20,000 IUs of Vitamin D3 along with 200 mg of Vitamin K2 for almost 1 1/2 years with the support of my family physician. My levels are high normal and my calcium is fine. All my labs are in excellent levels. I also nebulize with H2O2 regularly. For sure if I have been out shopping for a long time. So far, so good.

  2. Samee

    I am an educator and a vitamin D literature translator. I have turned my health around by using high doses of vitamin D.
    Thank you for speaking up.
    I read your other page on Cd business and drama where you said the ER rooms are empty. I have hard time believing it but I do not see what you gain from telling us what is not real.

    • drtrozzi

      Hi Samee,
      Thanks for your feedback and shared experience of vitamin D.
      Yes, when Dr. Trozzi was working in emergency hospitals during the “first and second waves”, it was the quietest time in his career, frequently seeing as few as two, or even zero, patients during entire 14 hour shifts. Usually, he used to see 30 or more. The same observations were made far and wide. Unfortunately, many patients avoided hospitals out of fear for a long time, or were swabbed for covid and sent home. Many first stage cancers developed beyond the point of help, and many have died for lack want of timely treatment. The obedience of doctors has been lubricated with decadent covid bonuses, and worked less than ever. In this right, the perpetrators of the covid scandal have cold heartedly taken loved ones from many with their insidious propaganda.
      The mainstream propaganda machines are very dishonest, and they enforce an obvious common agenda with their hive-minded publications: promote fear of coronavirus, and push the experimental injection on an unsuspecting public. The most dangerous threat to freedom is a press controlled by the government:
      Are you tired of being stepped on? Take action at
      Our very best,
      -Trozzi Support Team

  3. Kathy

    I am concerned about the “shedding” or “transmission” of the spike protien from jabbed people to the unjabbed, causing bruising, heavy menstrual bleeding, etc. Dr. Tenpenny from the US and others have warned about this. Has Dr, Trozzi done any research on this issue?

  4. tessa zimmer

    This man is the real deal and have heard same re ICUs and Emergency from people front line but, were never interviewed on the news. It took a long time for us to realize that the media was part of the agenda – as Snowden said “conspiracy theories….hidden in plain sight”. Vitamin D3 if essential and great advice from doctors around the world since March 2020 – the doctors who took their oath seriously to heal and treat. Thank you for this amazing site and don’t let the “bots” get you down. You are a hero.

  5. Elisabeth

    I used to take 500 IU of Vit D per day, then 1000, now I am taking 3000 IU plus fortified milk and spend as much time as I can in the autumn sun, I also make an elixier with fresh garlic, lemon juice (does away with the bad breath), water, sugar and Echinacea. I believe garlic has great antibacterial and antiviral powers if eaten fresh daily. My great grandmother ate it regularely and gave it to the children who went to school during the Spanish flu pandemic. Nobody died. During the swine flu pandemic in 2009 or 10 I travelled to Europe and ran into a few sick people. Was sitting in a train with another very sick, feverish, constantly coughing passenger. I thought: now it will get me! But no! Felt a bit off for a couple of days, just added a second shot of elixir per day (usually I take one liquor glass per day) and more Vit C and I was fine. My sister who was a bit sick when I visited for a couple of days refused to take the elixir. She got quite sick, barely escaped hospitalization. Hopefully the garlic will be a strong ally against Corona? I was lucky so far. No bad breath, the dentist is my witness!😉

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