What people like most about the products is that they are doctor formulated and safe for everyone, no matter what state of health someone is in. All of Herbalife's products have been developed by a team of 39 doctors and scientists - including Nobel Prize winner Dr. Louis Ignarro (for his research in the field of cardiovascular health). The products are all natural and of pharmaceutical grade which is the highest standard in the world. Herbalife backs their products with a 100% money back guarantee. There are no "magical" or "quick fix" ingredients - simply good quality nutrition from the highest quality fruit, vegetable and herbal extracts to give your body absorbable nutrition so that it can take care of itself!