mike57 : I've been using it for 2 weeks now, today is my last day. 1/4 of a tab used to give me the shakes, but that soon faded, so I bumped up the dosage. I've worked my way up to 4 tabs over this last 2 weeks. There probably is a point of diminishing returns, but the way I see it - if I'm shaking, it's working. Would rather take a good dose, than not take enough.
Gareth