February 25, 2014 HCG Diets hCG Diet FAQ: 2,000iu HCG- How to Mix, Dose, and Inject- part 1 of 2 Mixing Instructions for the hCG Diet: How to mix 2000iu vials of hcg for hCG injections, how to find your dose, and how to inject! (really, it doesn’t hurt ….