Thanks for your response Rosie.
So far I'm finding that it makes me very sleepy, which is fine because I had a feeling it would so I've been taking it at night. Other than that I just feel lightheaded and kinda loopy during the day. I know it takes 2-4 weeks before it will start working, but is it like BANG all of a sudden it's working, or should I start to notice myself gradually feeling different? I'm not noticing a single thing yet, other than the tired loopiness.