Hmmm I can't remember the brand.

Nope we don't have H&B here - I used to go there when I lived in Oxford though!

It seems to depend on the person. Some people metabolise it so it works immediately, others need as you say two weeks continuously. It says exactly that in the info I got with this brand. This brand is better than the last one I had I think. I am not sure of the mgs etc.