FDA-Approved (Limited)

Tesamorelin — Egrifta

Growth Hormone Release & Fat Reduction. Tesamorelin is a growth hormone-releasing hormone (GHRH) analog that stimulates the pituitary to produce and release gro...

Sequence
44 Amino Acids
Category
FDA-Approved (Limited)
Primary Use
Growth Hormone Release
Administration
SubQ

What Is Tesamorelin?

Tesamorelin is a growth hormone-releasing hormone (GHRH) analog that stimulates the pituitary to produce and release growth hormone. It is the only GHRH analog with FDA approval — specifically for reducing excess abdominal fat in HIV-infected patients with lipodystrophy (marketed as Egrifta). It has gained significant popularity for body composition optimization.

growth hormone fat reduction body composition GHRH

Mechanism of Action

Tesamorelin binds to GHRH receptors on the anterior pituitary, stimulating synthesis and pulsatile release of endogenous GH. Unlike exogenous GH, tesamorelin preserves natural feedback mechanisms, resulting in more physiological GH release. This leads to increased IGF-1, enhanced lipolysis (particularly visceral fat), and improved body composition without supraphysiological GH levels.

Key Research Findings

  • Visceral fat reduction — Phase III trials showed ~18% trunk fat reduction in HIV-associated lipodystrophy
  • Cognitive function — Randomized trial showed improved executive function and verbal memory in older adults at Alzheimer's risk
  • Liver health — Research indicates reduced liver fat and improved NAFLD markers
  • Body composition — Decreased visceral adipose tissue without significant subcutaneous fat or lean mass loss
  • Cardiovascular markers — Some studies show improvements in triglycerides and inflammatory markers

Important: The evidence base for Tesamorelin varies by application. Many findings are from preclinical (animal or in vitro) studies. Large-scale human clinical trials may not be completed. Always evaluate the quality of evidence before drawing conclusions.

Known Side Effects

Common side effects include injection site reactions, joint pain, peripheral edema, and paresthesia. Less common: elevated blood glucose and carpal tunnel-like symptoms. Long-term GH elevation carries theoretical oncological risks, though clinical data has not confirmed this.

Legal Status (2026)

Where to Buy Tesamorelin for Research

These verified suppliers carry Tesamorelin with third-party COAs and US-based shipping.

BP
BioPure Peptides
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AC
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MW
Midwest Peptide
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  • Same-day UPS shipping from US facility
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