Aha well I read some other threads on Rhodiola Rosea and there seems to be a bit of positive feedback, so I thought I'd take the plunge and try some! I also recall reading about it on another website about stress/anxiety supplements, so go figure.
I bought tablets from a company called Bioglan ('GinSynergy plus Rhodiola
It says each tablet contains Rhodiola, Korean Ginseng, Siberian Ginseng and Withania.
The Rhodiola Rosea component is labelled as follows:
dry ext. conc. equiv dry root 740mg
standardised to 3.7mg salidroside (2%)
standardised to 7.4mg phenylpropanoid glycosides
calc as rosavin, rosarin and rosin (4%)
Directions say to take 2 tablets a day.
Popped two tabs just now (1:30PM) - will post back over the next few days with my progress.