The original protocol by Dr. Simeons was standard 2 days for most people. On occasion he would have his patients load for more days if they seemed really malnourished for some reason. Some weight loss clinics do a standard 3 day loading phase.
As far as deciding on whether or not to load 2 or 3 days I have an article to help you decide:
You might also find it helpful to get more background on the why and how for best loading for better hCG diet success:
- The What and How of Loading on the hCG Diet
- Why Do We Load on the hCG Diet?
- How Fast Will You Lose the Loading Weight?
- How Much Will You Gain While Loading?
- Why Consider CLEAN LOADING for hCG
I hope this helps you!