HCG is a natural hormone that is quickly absorbed. HCG activates the Hypothalamus to release and mobilize abnormal fats (extra) found in your body and uses this as a source of energy or source of food. So, when you are on a very low calorie diet, Iaso HCG Drops help your body compensate the difference in calories that it needs to function through the use of stored fat, making it a source of food for your body; thus, resulting in rapid weight loss. Our product is a professional grade homeopathic HCG weight loss product that is made in the USA. Dieters who need to lose 15 lbs. (7 kg.) or less require a 26 day treatment.