“HCG” (human chorionic gonadatrophin) is a hormone derived from pregnant women’s (or animals’) urine. It was popular in the 60’s and 70’s as a weight loss aid; it was given by injection. It produced minimal weight change, primarily increased muscle mass, and was therefore popular among bodybuilders. We now realize that nearly all of the weight loss accomplished by individuals using HCG was due to the very low calorie eating plan they followed.
Although HCG is used in the treatment of some medical conditions, the FDA in the United States no longer allows it to be used for weight loss purposes or body building purposes.