Buy hCG
No matter who you use to purchase your hCG, be sure to do some research. There seems to be a lot of illegitimate hCG being sold out there. Ask questions about the hCG, like where the seller obtained it and how long they have been selling hCG. It is also a good idea to ask the seller for references from past clients.
Doing these things will help keep you safe, and ensure that you get a good product.
Here are the products I recommend for use with the hCG diet. They are a bathroom scale, a food scale, and a meal shake.