The settlement and delivery of the product ran smoothly. Especially I was pleased about the additional information that the delivery was accompanied by (but is rather a matter of taste, many a would be possibly too much paper). That's why 3 stars. I can not make any statement about the effect because I are the only product occupying two weeks to support my diet and wants to draw the comparison only after a long period of time. Therefore, missing the last two stars, this I submit, if appropriate, by me if the product has convinced.