Peptides A–Z

Human chorionic gonadotropin (hCG) is a natural hormone, the one pregnancy tests detect. It is a licensed prescription medicine in the UK for fertility and for certain hormone conditions. It is also misused in bodybuilding and sold for weight loss, a use the evidence does not support.

HGH 191AA is recombinant human growth hormone, known as somatropin, an exact copy of the body's own growth hormone. It is a licensed prescription medicine in the UK for specific deficiencies, but it is also widely misused for muscle and anti ageing, which is neither licensed nor safe without need.

HMG, human menopausal gonadotropin, is a fertility hormone preparation that supplies FSH and LH activity. It is a licensed prescription medicine in the UK, used mainly in fertility treatment. It is also misused in bodybuilding, which is off the licensed use.

Triptorelin is a long acting copy of GnRH that, with steady use, switches off the body's sex hormones. It is a licensed prescription medicine in the UK for conditions such as prostate cancer, endometriosis and early puberty. It is also misused in bodybuilding, which is off the licensed use.

CJC-1295 is a synthetic growth hormone releasing hormone analogue that prompts the body to release more of its own growth hormone. It comes in two forms with very different durations. It has no UK marketing authorisation, and the human evidence for the benefits people seek is limited.

This is a blend of CJC-1295 without DAC and ipamorelin, two growth hormone peptides often combined to raise the body's own growth hormone. Neither is a licensed medicine in the UK, and both are prohibited in sport.

CJC-1295 and ipamorelin are two growth hormone peptides that are often combined. The idea is to prompt the body to release more of its own growth hormone, rather than to inject growth hormone itself. The blend is widely marketed, though the human evidence behind it is thin.

This is a blend of CJC-1295 and GHRP-2, two growth hormone peptides combined to raise the body's own growth hormone. GHRP-2 also raises appetite. Neither is a licensed medicine in the UK, and both are prohibited in sport.

This is a blend of CJC-1295 without DAC and ipamorelin, the same pairing of two growth hormone peptides sold under a slightly different name. Neither is a licensed medicine in the UK, and both are prohibited in sport.

GHRH is the body's own hormone that tells the pituitary gland to release growth hormone. The synthetic form, and its fragments such as sermorelin, are studied and marketed to raise growth hormone. It has no UK marketing authorisation as sold here, and it is prohibited in sport.

GHRP-2 is a growth hormone releasing peptide that prompts a pulse of the body's own growth hormone. It is more potent than some of its relatives and raises appetite and some other hormones. It has no UK marketing authorisation, and it is prohibited in sport.

GHRP-6 is one of the older growth hormone releasing peptides, best known for causing a strong surge in appetite alongside a pulse of growth hormone. It has no UK marketing authorisation, and its use today is mainly in research.

Gonadorelin is a synthetic copy of GnRH, the brain's signal that drives the release of fertility hormones. It is used as a medicine in some settings for fertility and diagnostic tests, and is popular in private clinics abroad alongside testosterone therapy. Its UK availability is limited, and it is often sold online for research use.

Hexarelin is a growth hormone releasing peptide that triggers a pulse of growth hormone and has also drawn interest for effects on the heart. Its growth hormone effect tends to fade with continuous use. It has no UK marketing authorisation, and it is prohibited in sport.

HGH Frag 176-191 is a small piece of growth hormone, marketed for fat loss. Its close relative AOD-9604 was the one actually tested in people, where it did not show clear weight loss. It has no UK marketing authorisation, and it is prohibited in sport.

Ipamorelin is a small synthetic peptide that prompts the body to release a pulse of its own growth hormone. It is often combined with CJC-1295. It has no UK marketing authorisation, and the human evidence for the benefits people seek is limited.

This is a blend of ipamorelin and tesamorelin, two growth hormone peptides. Tesamorelin is a licensed medicine in some countries for a specific condition, but neither is licensed in the UK, and both are prohibited in sport.

MK-677, also called ibutamoren, is an orally active compound that prompts the body to release more of its own growth hormone. It is a small molecule rather than a peptide, and it has never been approved as a medicine. It has no UK marketing authorisation.

Sermorelin is a synthetic copy of the active part of growth hormone releasing hormone, the body's own signal to release growth hormone. It was once a licensed medicine for growth problems in children, and is now marketed privately for anti ageing and body composition. It has no UK marketing authorisation today.

Tesamorelin is a synthetic growth hormone releasing hormone analogue. It is a licensed medicine in some countries for a specific condition in people with HIV, where it reduces excess abdominal fat. It has no UK marketing authorisation, and it is marketed privately elsewhere for body composition.

This is a triple blend of tesamorelin, CJC-1295 without DAC and ipamorelin, three growth hormone peptides combined to raise the body's own growth hormone. None is a licensed medicine in the UK, and all are prohibited in sport.

TRH, also called protirelin, is the brain's signal that prompts the release of thyroid stimulating hormone. As a medicine it has mainly been used in diagnostic tests of the thyroid and pituitary, given under medical supervision. It is not a general treatment, and it is sold online for research use.