I followed everything Dr Vickery told me to do for many months and personally saw no improvement.
He used over the phone testing and told me I was riddled with tons of viruses etc including HIV and AIDs. I was concerned at the time and went and had blood tests through the NHS (twice!) to check and the tests showed I did not have it.
Perhaps he has helped some people but for me it just ended up costing a lot of money and time. If you have any questions, let me know :)