HCG — 5000 IU

Human chorionic gonadotropin, usually abbreviated hCG, is a glycoprotein rather than a short synthetic peptide. The Pregnyl prescribing information describes a hormone composed of alpha and beta subunits whose biological actions closely resemble those of luteinizing hormone. It stimulates testicular Leydig cells to produce androgens and supports progesterone production by the ovarian corpus luteum. In pregnancy, placental hCG helps maintain the corpus luteum after pituitary LH secretion declines. These actions make hCG relevant to reproductive physiology, steroidogenesis, and laboratory studies of LH-receptor signaling.

Umbrella Labs describes its HCG vial as a freeze-dried research material and emphasizes testosterone production, corpus-luteum support, ovulation research, and male hypogonadism. Those descriptions overlap with the reproductive actions documented for pharmaceutical chorionic gonadotropin, but the medicine label and the research-vial listing describe different products. The label also explicitly states that hCG has no known effect on fat mobilization, appetite, or fat distribution. Thus, the sourced description centers on reproductive endocrine activity rather than treating hCG as a weight-loss peptide.