http://powercoregoldd.com/
I responded to an on line add - as I recall it was "Free Trial - pay the freight and we'll send you a bottle"
So I place an order for the trial. Provided my credit card details for the freight. The bottle arrived but I was not convinced - you have to take 2 per day for a month. I'm 67 with some health issues so I chose not to use them.
Three weeks later another bottle arrived! Seems the free bottle was not free at all - I have paid for it and the supply continues until I cancel it! These people are not interested in your health - they are totally profit motivated and are using clever marketing tactics to catch you out. They are also not publishing a geographical address either.