I have been taking this as directed for about five days, It doesn't upset my stomache, like similar competing products have done in the past. I don't notice any kind of change in the way I feel, so their claims for being natural are definately true. I hate it when things speed up your speech just to have you crash a little later, Either way there, you look and act stupid.
I am really excited and hope this really works. I am excited to start seeing the results.