Sexual Health Peptides

Cetrotide, GnRH antagonist

A GnRH antagonist that rapidly suppresses the HPG axis without the initial flare seen with GnRH agonists. Used in fertility protocols and studied for prostate conditions and hormonal management.

GnRH, Luteinizing Hormone-Releasing Hormone, LHRH

Synthetic GnRH used to maintain pituitary-gonadal axis function, particularly during testosterone replacement therapy. Prevents testicular atrophy and preserves fertility.

Human Chorionic Gonadotropin, Pregnyl, Novarel

The most widely used adjunct in testosterone replacement therapy. Maintains testicular size and function, preserves fertility, and stimulates endogenous testosterone production by mimicking LH.

KP-10, Metastin 45-54

A naturally occurring neuropeptide that drives pulsatile GnRH release. Stimulates the HPG axis to increase testosterone and estrogen production; studied for hypogonadism and sexual dysfunction.

KP-54, Metastin, KISS1 54-mer

The full-length kisspeptin with a longer duration of action than Kisspeptin-10 (KP-10/ID 47). Produces more sustained HPG axis stimulation; studied for infertility treatment and hypogonadism.

MT-II, MT2, Melanotan 2

A synthetic melanocortin peptide with potent effects on sexual arousal and skin tanning. Activates melanocortin receptors to enhance libido and erectile function.

Decapeptyl, Trelstar, GnRH agonist

A potent GnRH agonist used for HPTA restart after hormonal suppression. Single dose can restore natural testosterone production in post-cycle therapy.