Peptide Therapy Foundations: Hormonal & Sexual Health

This course examines the peptides that act on sexual function and the hormonal axis that governs reproduction. It is written for clinicians who want to understand how these agents influence desire, arousal, and the upstream signaling of the reproductive system, and how the evidence behind each one should be read.

The lessons cover two mechanistic approaches. PT-141, a melanocortin receptor agonist, acts centrally on pathways tied to sexual desire and arousal. Kisspeptin-54 and Kisspeptin-10 sit further upstream, signaling through the KISS1 receptor to drive gonadotropin-releasing hormone and the hypothalamic-pituitary-gonadal axis. The two kisspeptin isoforms differ in size and signaling behavior, and the lessons keep them distinct.

Each lesson follows the same clinical lens: what the agent is, how it works, what the evidence shows, and what a practitioner weighs before applying it. Together they map the hormonal and sexual-health peptides as a group so you can reason about each one against the others.

• Distinguish central melanocortin action from upstream reproductive-axis signaling
• Describe how PT-141 acts on pathways tied to sexual desire and arousal
• Compare the Kisspeptin-54 and Kisspeptin-10 isoforms and their signaling
• Apply a consistent clinical framework when evaluating a hormonal or sexual-health peptide