Just to underline the point, here are two contrasting approaches from media science sites:
This one is eminently reasonable. Basically, they say that these have not been approved for anything in humans but lots of evidence out there and they are safe, maybe give them a try:
\https://www.healthli...The-bottom-line
This one represents the typical patronizing, pearl-clutching approach we constantly here from the media:
https://www.livescie...min-c-myth.html
Specifically, they start out saying, in so many words, that Vitamin C is worthless, so don't bother taking it for an immune boost:
Why vitamin C won't 'boost' your immune system against the coronavirus
It poses little risk but is very unlikely to help.
Then, halfway through the article, they proceed to provide plenty of compelling evidence that vitamin C may indeed boost the immune system.
However, recent research does suggest that vitamin C supplements reduce the duration of colds in the general population, according to a 2013 review of several dozen studies.
The review found that vitamin C supplements taken during a cold can reduce the duration of the illness by 8% in adults and 14% in children. Practically, that means that supplementing vitamin C can shorten the duration of a cold by about one day. Participants in each study supplemented vitamin C for varying periods, but generally, the daily dose was at least 200 milligrams.
Several of the reviewed studies included people under intense physical stress, including marathon runners and soldiers training in the Arctic. Among these individuals, those who took vitamin C were about half as likely to catch a cold as those who did not take such supplements. But in the general population, the supplements did not prevent the common cold.
"If there's going to be an advantage, it's going to be very modest," Schaffner said.
Ya, because no one wants a "modest" advantage during a pandemic One might wonder whether adding several of these "modest" advantages together might result in a significant advantage. But what do I know, I haven't conducted any 20 year long clinical trials and then refused to disclose any of the data. So clearly not an expert by the standards of the day.