Human chorionic gonadotropin, or hCG, is a gonadotropin hormone with clinical uses that include selected reproductive and endocrine disorders. It acts through receptors related to luteinizing hormone.

The GORoids listing identifies HCG 500 as an injectable product containing human chorionic gonadotropin and specifies one vial containing 5,000 IU. The product name and stated vial strength should be checked against the physical packaging.

HCG is a prescription medicine in many jurisdictions and should be administered according to an appropriate medical indication. GORoids should verify the manufacturer’s instructions, storage conditions, reconstitution requirements, and regulatory status.