"Multiple randomized trials indicate that systemic corticosteroid therapy improves clinical outcomes and reduces mortality in hospitalized patients with COVID-19 who require supplemental oxygen, presumably by mitigating the COVID-19-induced systemic inflammatory response that can lead to lung injury and multisystem organ dysfunction."
https://www.covid19treatmentguidelines.nih.gov/therapies/imm...
But yes, you're also right that it usually makes you more susceptible to infection because your immune system isn't working as hard.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5949415/
"Seventeen meta-analyses of these studies have been performed and have similarly shown conflicting results with some demonstrating a survival advantage (4-6) while other have not (7-10). Consequently, true equipoise exists with regards to the clinical benefit of corticosteroids in patients with severe sepsis and septic shock.
...
In summary, the use of corticosteroids in patients with severe sepsis and septic shock is not associated with improved patient centered outcomes, however this treatment is safe and without an increased risk of complications. Corticosteroids appear to have synergistic biological effects when combined with intravenous vitamin C and thiamine and may be associated with improved patient centered outcomes (21)."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8604467/
"In this review article, we reviewed a total of eight different articles being done in last 10 years, relevant to the clinical outcome and effects of corticosteroids. Among those, two demonstrated improved clinical outcomes, two showed both improved clinical outcomes and decreased mortality, three showed increased adverse effects, and the remaining one showed unequivocal results."
There is actually a good reason to think that steroids are beneficial in severe infections. This is because often in a severe infection/inflammation, a big portion of the damage is done by the inflammatory response.
Reading about the pathophysiology of influenza 13 years ago after H1N1, I came to this conclusion, and it was trialed, but good quality studies showed it to not be effective.
COVID has a slightly different pathophysiology and in COVID it works.
But yea, as a rule, it’s not a good idea to dose with steroids if sick
Everyone bangs in about the medical industrial complex, and points to either herbs and vitamins, or more recently ivermectin, or hydroxychloroquine.
Everyone conveniently just rolls over the fact that steroids (also patent free) were rapidly identified by a massive research study in the UK, became standard of care, and saved hundreds of thousands of lives.
Is the pharma industry broken? Yes. Are there doctors who are conveniently leaving the cheap things on the shelf so a pharma company can profit off misery? Doctors are people too. In the most extreme form of this conspiracy thinking, apparently no doctors get or die from cancer. Just think on that for a second
EDIT:
MJF foundation is aware of it at least - https://www.michaeljfox.org/news/thiamine-vitamin-b1-and-par..., but points out problems with the study. Further Googling quickly leads to the usual quackery about the magical properties of different supplements and vitamins. Hope this goes somewhere though.