The Human hormone Chorionic Gonadtropin (HCG) essential, for fertility and mainly produced during pregnancy to boost progesterone levels was first identified in 1920. Brought into the market as "Pregnon" by company Organon in 1931 before being renamed to Pregnyl in 1932. This hormone was originally sourced from animals but by the 1940s switched to extracting it from the urine of pregnant women. Modern day uses of HCG include treating hypogonadism and infertility along, with being used by athletes to stimulate testosterone production after a steroid cycle.

References:

Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.

Disclaimer: Information provided it this page is for general information only and does not substitute for professional medical advice.

For more details consult with your doctor or healthcare professional.

FAQ

What is HCG used for in bodybuilding?

HCG is used to maintain testicular function and restore testosterone production post-cycle.

References:

Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.

How does HCG work in the body?

HCG mimics luteinizing hormone (LH) stimulating natural testosterone production.

References:

Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.

Does HCG prevent estrogenic side effects?

No, HCG does not prevent estrogenic side effects, so additional compounds may be needed for that.

References:

Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.