[elif]

Can you link a non-observational study that says so? I believe you may be conflating prophylactic and responsive medicine here.

https://ivmmeta.com provides an updated-weekly meta analysis following new publications and retractions showing significantly positive prophylactic efficacy over control in 83% of papers.

[jjeaff]

Taking a look at the list of peer reviewed studies gives you a bunch of tiny, tiny population studies. I read a twitter thread from a researcher that was rather critical of the methods that site is using. Notice how the larger the study, the less effect ivm seems to have. Also, some of the largest studies actually show no or negative effect.

I think it is notable that you can go down the list of all the drugs on the right where they apply similar meta analysis to the treatments and they find that many drugs seem to be effective against covid. Even aspirin seems to treat covid effectively.

https://c19aspirin.com/meta.html