I’ve read a bit about it and since we’re on the internet there are (obviously) conflicting statements regarding it working/not working.
The benefits seem to be pretty interesting though: " it produced improvement in all the areas tested: energy, sleep, mental clarity, pain intensity, and well-being" (taken from wiki)
But doing a search on here I only found one (old) article about it.
On an off topic point, reading the ‘summary’ of that article was pretty funny. Especially when I read: “Rhodiola is rhodio-crap. Don’t waste your money on supplements with this herb.”