Human Chroinic Gonadotrophin – Human chorionic gonadotropin (HCG) is a hormone that supports the normal development of an egg in a woman's ovary, and stimulates the release of the egg during ovulation.HCG is given as an injection under the skin or into a muscle. If you use HCG at home, your doctor, nurse, or pharmacist will give you specific instructions on how and where to inject this medicine. Do not self-inject HCG if you do not fully understand how to give the injection and properly dispose of used needles and syringes. This injection is available in diffrent strength 2000. 5000. 7500 & 10000.