[thorum]

Somewhat useless article. To summarize, we have anecdotes suggesting they may work but no one has figured out how to prove or disprove it in a study, and the author has some doubts. Meanwhile supplements can be dangerous if you take too much or have a liver condition, or if you buy them from an unreputable source, as with every other substance on earth. Author confirms it tastes good in milk.

[mgh2]

Not useless if it pinpointed that most of the foundational research papers that initiated this trend were of dubious intellectual integrity- i.e. the source was compromised

[pseudohadamard]

I recently went into a few European pharmacies trying to find any that still stock cough lollies with DXM and found that Icelandic moss seems to be the currently in-fashion health woo-woo. Presumably because freighting it in from Iceland rather than ripping it off the tree in your back yard gives it magical healing properties.