Hormonal Health
Peptides that regulate hormonal signalling, reproductive function, and endocrine balance
7 peptide profiles in this category. Browse the full directory to explore all 167 research peptides.
Oxytocin
The 'bonding hormone' — a hypothalamic neuropeptide governing social behaviour, trust, stress response, and reproductive function.
Kisspeptin
A hypothalamic neuropeptide that acts as the master regulator of GnRH pulse generation and the entire reproductive endocrine axis.
Gonadorelin
Synthetic GnRH used to maintain testicular function, LH pulsatility, and fertility during and after testosterone replacement therapy.
Thyrotropin
A synthetic tripeptide analogue of Thyrotropin-Releasing Hormone (TRH/Protirelin) that stimulates pituitary TSH release and thyroid hormone production - used in thyroid axis research and diagnostics.
Leuprolide (Leuprorelin)
Leuprolide is a synthetic 9-aa GnRH superagonist. Paradoxically, continuous use desensitizes GnRH receptors → profoundly suppresses LH, FSH, and sex steroids after 2-4 weeks. FDA-approved for prostate cancer, endometriosis, uterine fibroids, precocious puberty.
Cetrorelix
Cetrorelix is a 10-aa synthetic GnRH antagonist that immediately blocks GnRH receptors, suppressing LH and FSH without the initial testosterone flare of GnRH agonists. FDA-approved for controlled ovarian stimulation in IVF.
Degarelix
Degarelix (Firmagon) is a 10-aa GnRH receptor antagonist that suppresses testosterone to castrate levels within 3 days without the initial flare of GnRH agonists. FDA-approved for advanced prostate cancer.
Research Tools
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