Overview

HCG is a glycoprotein hormone produced during pregnancy. Used clinically for fertility, maintaining testicular function during TRT, and historically in weight loss protocols.

Mechanism of Action

LH mimicry — Binds LH receptors on testicular Leydig cells
Testosterone stimulation — Maintains endogenous testosterone production
Fertility preservation — Prevents testicular atrophy during exogenous testosterone use
Ovulation induction — Triggers ovulation in fertility treatments

Dosing

For TRT adjunct: 250-500 IU subcutaneously 2x weekly. For fertility: varies by protocol.

Status

FDA-approved for multiple indications.