At one time, everything reminded me of a page in First Aid…
I’m at the ACE Conference just until tomorrow and the presenters have spoken (at a breakneck speed) about several studies. Regarding Zinc as a cold suppressant, they said that the evidence so far says it is effective at halting cold symptoms.
I chortled inside when I heard them say that you need to take zinc acetate, and it can’t have sugar or else it won’t work. Clearly, zinc acetate is the Harry Potter version of Wolfsbane, also nasty-tasting and rendered useless by sugar.