I am taking it and I also felt very nauseous when I first started, but it got better after a short time (I would say 2-3 days). The drowsiness/groggy feeling also went away after a few days. The same side effects came back when I went up on the dose, and then passed again after a couple days. Unfortunately I have also not noticed any "good" effects from taking it, but it has not been that long - just a month or so.

I hope the side effects go away soon for you, nausea is miserable (so is being tired).

take care.