HCG
Human chorionic gonadotropin — FDA-approved for specific fertility and hormonal indications; reclassified as a biologic in 2020, which ended most pharmacy compounding.
What it is
Human chorionic gonadotropin is a real hormone and a real FDA-approved drug — used in fertility treatment and specific hormonal indications for decades. It also drags two complicated legacies: the thoroughly debunked 'HCG diet,' and a 2020 regulatory change that ended most pharmacy compounding of it.
In men's-health and TRT-adjacent clinics, HCG is prescribed off-label to maintain testicular function alongside testosterone — a legitimate, evidence-discussed practice that must now run through approved products rather than cheap compounded versions.
What researchers have actually studied it for
Ovulation induction, male hypogonadism and fertility preservation alongside testosterone — approved and evidence-discussed uses; the weight-loss protocol is a settled negative.
How it works
HCG mimics luteinizing hormone (LH), signaling the gonads directly: in men it drives testicular testosterone production; in women it triggers ovulation. That LH mimicry is both its fertility utility and its appeal alongside exogenous testosterone, which suppresses the body's own LH.
Where it came from
Isolated from pregnancy biology in the 1920s and a fertility-medicine staple since, HCG detoured through infamy via the 1950s Simeons diet protocol — repeatedly debunked, with FDA requiring explicit disclaimers. In 2020 it was legally reclassified as a biologic, removing it from routine 503A compounding overnight.
What the research record actually contains
- Established clinical evidence for ovulation induction and specific hypogonadism indications.
- Controlled studies supporting fertility-preservation use alongside testosterone therapy.
- The HCG diet: controlled trials found it adds nothing to caloric restriction — a settled negative.
What's known about risks
Well characterized in clinical use: injection-site effects, potential for ovarian hyperstimulation in fertility contexts, and the general cautions of hormonal therapy. The bigger modern risk is sourcing — post-2020, cheap 'compounded HCG' offers are a red flag by definition.
Where it stands legally
FDA-approved products only, by prescription; the 2020 biologic reclassification ended standard pharmacy compounding, which reshaped men's-health clinic sourcing overnight.
Worth asking a licensed provider
- 1.Is my use case one with actual evidence — fertility, TRT adjunct — or diet-era folklore?
- 2.Post-2020, which approved product is this, and what does it cost through legitimate channels?
- 3.What monitoring goes with LH-mimicking therapy in my situation?