Why do I feel tired after taking Siberian Ginseng?

I started taking Ginseng a few weeks ago , which is supposed to be enough time to get it to work, but I feel more and more tired and am exhausted when I get in from work. I then sleep for s few hours and wake up in middle of the night wide awake. I am up from 6 am in the morning getting back about 6 at night. Had all relevant medical tests done bloods thyroid etc but all come back normal.|||I know of no proven health benefits from taking ginseng, so I suggest you stop taking it and see if you feel better. It shouldn't make you feel more tired... it shouldn't really make you fee more anything! Use the money you save on improving your diet or take a general multivitamin supplement.