Herbalife is your everyday average pyramid scheme... the people who begin the program are pressured to be sellers of the product so that they may get a percentage off their packages themselves.
Also, there are numerous studies, especially overseas where in some places, the product is banned about the damaging effects that Herbalife has on your liver.
Also it is known to cause severe spikes in blood pressure.
Just warning you, the people who are involved in the herbalife company mean well, for sure but are being fooled by the owner for their money and their susceptibility to being an employee for his company. Look into the long term health effects that are PROVEN to have happened after using this product. I would not advise doing this unless you really look into it first - from other sources that aren't Herbalife-based.