The average weight loss of 3 to 4 kilos per month its quite conservative (can be more) IF at least Two meals are replaced with a product sold in 78 countries and approved by the same number of govt health departments.
The idea is to get all (and more) of the nutrients needed, with low cal intake, and replacing the meals with low quality nutrients and high cal intake such as fast foods, candy, cakes, soda, etc.
If you do not replace the meals with these top products, or you eat additional meals in between breakfast, lunch an dinner, you can't possible lose weight. I have lost 22 kilos in 4 months following the instructions carefully, replacing two meals with their product and eating only one sensible fork and knife meal at lunch time.
I found out that there is no vaccines for weight loss, just good eating habits to avoid sudden weight gain. george