Interesting that I happened upon your post: today I just bought my first jar of hemp protein powder. This is just an opinion, but it sounds to me as if it is the Barlean's Greens that might be having a strong cleaning effect on you. It does contain chlorella, which is said to mobilize mercury out of your tissues and into your bloodstream. If your body isn't running optimally, maybe the mobilized mercury, instead of being excreted, is going round and round in your bloodstream, looking for other spots to re-settle.

This is just grist for the mill. I would try taking the hemp powder without the greens for a week and see what happens. Good luck to you. I am starting my hemp powder tomorrow for breakfast without any concentrated green powders. I might juice some greens, though, and add a bit to the hemp powder and water. Personally, I don't think that these concentrated powders are necessarily the best thing for everyone.