Fair enough re: flavoring. (I did have a quick look myself earlier, but didn’t find anything. Thanks for being more thorough.)
The literature does engage with the “mannitol, sorbitol, citric acid, glycine, and many others may cause past studies to not find an effect”. At least five of the eight studies referenced in the meta analysis, the meta analysis itself, the other paper, and many other studies make statements to that effect and are designed to avoid it.
To clarify, do they do “we tested a zinc lozenge with some of these things and a zinc lozenge without (and maybe also a placebo)”? That’s the kind of thing I meant by taking it seriously. If we want to compare condition A and condition B, my sense is we can learn a lot less from “study on condition A, study by different group on condition B” than a study comparing them directly.
As for testing yourself—unless you do a blinded, well done, long term, controlled self experiment a la Gwern, it’s so easy to make a mistake that it probably is meaningless.
Eh, honestly I just don’t think this is true in this case. There are ways I could have made mistakes—it’s possible that
The first cold I took them for just got better really fast naturally.
And then I didn’t catch one for a year and a half, despite twice thinking I was coming down with one.
And then when I did get one, it had fast onset and unusually light symptoms. Or I just didn’t remember what it was like to have a cold by then.
Or maybe I got more colds than that and completely forgot about them. I acknowledge that this kind of thing is possible. I don’t think it’s super likely. I definitely don’t think it’s likely enough that I should consider my experience meaningless.
Fair enough re: flavoring. (I did have a quick look myself earlier, but didn’t find anything. Thanks for being more thorough.)
To clarify, do they do “we tested a zinc lozenge with some of these things and a zinc lozenge without (and maybe also a placebo)”? That’s the kind of thing I meant by taking it seriously. If we want to compare condition A and condition B, my sense is we can learn a lot less from “study on condition A, study by different group on condition B” than a study comparing them directly.
Eh, honestly I just don’t think this is true in this case. There are ways I could have made mistakes—it’s possible that
The first cold I took them for just got better really fast naturally.
And then I didn’t catch one for a year and a half, despite twice thinking I was coming down with one.
And then when I did get one, it had fast onset and unusually light symptoms. Or I just didn’t remember what it was like to have a cold by then.
Or maybe I got more colds than that and completely forgot about them. I acknowledge that this kind of thing is possible. I don’t think it’s super likely. I definitely don’t think it’s likely enough that I should consider my experience meaningless.