Zapper beginner

I am living in Hong Kong. Want to buy a VariZapper to kill the parasites in my body. However, I am totally foreign to the electrical terms and applications. Have been trying to find Zapper Applicaton training. I will be going to London in July, today I called Health Leads which produce this product but no help is offered. Could anybody advise me on this?

Any place on this earth where I can find some help on the usage of Zapper? Tweet