Tesamorelin
aka Egrifta, TH9507
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.