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FDA-approved·Growth hormone-releasing hormone (GHRH) analog

Tesamorelin

aka Egrifta, TH9507

Education only. Many compounds discussed are research chemicals not approved for human use in the US. This is not medical advice — consult a licensed physician.

What it is

A 44-amino acid synthetic GHRH analog. FDA-approved (Egrifta) for HIV-associated lipodystrophy with proven 15–20% reduction in visceral adipose tissue. Increasingly used off-label for general visceral fat reduction in older adults.

How it works

Stimulates the pituitary to release growth hormone in physiological pulses. Unlike exogenous HGH, preserves natural pulsatile rhythm and feedback loops. The resulting GH/IGF-1 elevation drives visceral lipolysis specifically.

What the research says

Multiple Phase 3 trials show 15–20% visceral fat reduction over 26 weeks. The only GH secretagogue with FDA approval for fat loss. Preserves lean mass while reducing visceral adipose.

Sources: NEJM: Tesamorelin Phase 3 · FDA Egrifta label

Common dosing ranges

Range
1–2 mg/day total
Frequency
Daily SubQ, often split AM + PM; 5 days on / 2 off
Duration
8–12 week cycles; clinical minimum effect window 26 weeks

Sources: PubMed

Administration

SubQ

Half-life

~26 minutes (rapid pulsatile GH release)

Side effects

Common

  • Injection site reactions
  • Mild fluid retention
  • Joint pain
  • Carpal tunnel symptoms

Serious / theoretical

  • Glucose intolerance (monitor HbA1c)
  • Avoid in active malignancy
  • Avoid in pregnancy

Sources: FDA label

Notes

Bachmeyer's preferred GH-axis stack anchor. Stack with Retatrutide for dual visceral fat attack (Jones DC protocol). Preferred over exogenous HGH because pituitary feedback stays intact.