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Tesamorelin for Muscle Growth: What the Evidence Shows

What human and animal studies show about Tesamorelin for muscle growth, how strong that evidence is, and what is still unproven.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureGHRH analogUpdated
Strongest evidence
None graded
no study with an outcome for muscle growth (PubMed search, 2 Oct 2026)
Human studies
None found
with an outcome for muscle growth, in our evidence file (PubMed search, 2 Oct 2026)
Animal studies
None found
with an outcome for muscle growth, in our evidence file (PubMed search, 2 Oct 2026)

Evidence for muscle growth

None of the study abstracts we summarised for Tesamorelin reported an outcome for muscle growth (PubMed search, 2 Oct 2026). Claims that it helps with muscle growth are unproven.

How strong is it?

Strongest evidence:No graded study for muscle growth (PubMed search, 2 Oct 2026)

A human randomized trial outweighs any number of animal studies. Animal and cell results show a mechanism worth testing, not that it works in people.

Other peptides people research for muscle growth

CJC-1295CJC-1295 + IpamorelinSermorelinEnclomipheneHGHTirzepatideIGF-1 LR3hCG
All peptides for muscle growth, compared

Common questions

Does Tesamorelin help with muscle growth?

None of the studies we summarised for Tesamorelin (PubMed search, 2 Oct 2026) measured an outcome for muscle growth. Treat claims that it helps with muscle growth as unproven.

Is Tesamorelin approved for muscle growth?

Tesamorelin is FDA approved (Egrifta). Which conditions that approval covers is set by the label; use for anything else is off-label.

What is the best peptide for muscle growth?

There is no single answer. Our muscle growth overview compares each candidate by evidence grade and legal status rather than by popularity.

More on Tesamorelin

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.Legal statusFDA, compounding and WADA status with dates.

Sources

  1. 1PubMed search: (tesamorelin[tiab] OR Egrifta[tiab] OR TH9507[tiab] OR "TH-9507"[tiab]) (104 results)PubMed · 2026pubmed.ncbi.nlm.nih.govAccessed 2 Oct 2026
  2. 2PubMed search: (tesamorelin[tiab] OR TH9507[tiab]) AND (pharmacokinetic*[tiab] OR half-life[tiab]) (5 results)PubMed · 2026pubmed.ncbi.nlm.nih.govAccessed 2 Oct 2026

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