HCG 5000 refers to a dosage power (5000 IU) of Human Chorionic Gonadotropin (HCG), a hormone made throughout pregnancy. In medical and fitness contexts, it's useful for many reasons: What is HCG? Human Chorionic Gonadotropin (HCG) is actually a hormone By natural means made by the placenta throughout pregnancy. It performs a task in keeping the p