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PX1 Labs Tesamorelin 10 mg research peptide vial
Fat Loss & Metabolic

Tesamorelin

GHRH analog for visceral fat and body composition

GHRH(1-44) analog · 44-amino-acid peptide

A growth-hormone-releasing peptide best known for reducing deep abdominal (visceral) fat — the most clinically validated compound on this list.

€58.4510 mg · LyophilizedIn stock
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Purity 99%+ HPLC
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Documentation CoA included

For laboratory and in vitro research use only. Not for human or veterinary use, and not for use in diagnostic procedures.

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ClassSynthetic GHRH analog
Half-life~26–38 min
CategoryFat Loss & Metabolic
Price€58.45
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About Tesamorelin

Tesamorelin is a synthetic analog of human growth-hormone-releasing hormone (GHRH), comprising the full 44-amino-acid GHRH sequence with a stabilising modification at the N-terminus. The modification improves resistance to enzymatic degradation, making it a useful reference compound in endocrine research.

PX1 Labs supplies Tesamorelin as a 10 mg lyophilized powder verified at 99%+ identity purity by HPLC, with identity confirmed by mass spectrometry. A lot-specific Certificate of Analysis is included with every order.

What it's known for

Tesamorelin is best known for visceral (belly) fat and body composition. Here is what it is most associated with. (Supplied for laboratory research use only.)

Visceral (belly) fat

Best known for reducing deep abdominal fat.

Body composition

Associated with body-composition and metabolism.

Your own growth hormone

Works by prompting the body's own GH release.

Evidence

The strongest evidence base here — approved (US) for one narrow medical indication.

How it works

Tesamorelin is a GHRH (growth-hormone-releasing hormone) analogue that prompts the body to release its own growth hormone. It is through this route that it is linked to a reduction in visceral (deep abdominal) fat.

What the evidence shows

Tesamorelin has one of the strongest evidence bases on this list: it is approved in the US for a narrow indication (HIV-associated lipodystrophy abdominal fat) and has several clinical trials. Outside that indication, use is unstudied.

An educational summary, not a treatment claim or medical advice.

Side effects & safety
Reference information — not medical adviceSummarised from public research literature. PX1 Labs products are supplied for laboratory research use only; not for human or veterinary use.

Commonly reported

  • Injection-site reactions (redness, itching)
  • Joint pain / fluid retention
  • Flu-like symptoms early on

Cautions & contraindications

  • Raises IGF-1 — contraindicated with active malignancy
  • Can impair glucose tolerance
  • Approved only for HIV-associated lipodystrophy; other uses are off-label/research
  • Avoid in pregnancy
Reference protocols
Reference only — not a recommendationThe figures below are commonly cited in public and community references. They are provided for reference and comparison only — not a dosing instruction, recommendation, or medical advice. PX1 Labs products are supplied for laboratory research use only; not for human or veterinary use.
ContextCommonly cited amountFrequency
Approved-indication amount≈ 2 mg1× daily, evening

Reconstitution example: e.g. 10 mg + 2 mL → 5 mg/mL; 2 mg = 0.4 mL (40 units).

Daily in approved use; outside that indication there is no studied schedule.

Work out your own draw in the calculator →

What researchers commonly report — by week
Commonly reported, not guaranteedThese timelines summarise what self-experimenters and widely available community sources describe. Individual results vary widely, many notice nothing on this schedule, and these are not promised outcomes. Reference information only — not medical advice. PX1 Labs products are supplied for laboratory research use only.
Week 2–4
Sleep and recovery usually reported first.
Week 6–8
Waist / visceral-fat changes are the classic reported window.
Week 12+
Most-cited point for the body-composition result.

Specifications

Every PX1 Labs lot is independently verified before dispatch. The figures below describe the product class; exact lot-specific results are documented on the Certificate of Analysis included with your order.

Compound classSynthetic GHRH analog
CAS number218949-48-5
Molecular formulaC₂₂₁H₃₆₆N₇₂O₆₇S
Molecular weight≈ 5135.9 g/mol
Identity purity99%+ (HPLC)
Identity confirmationMass spectrometry
Presentation10 mg lyophilized powder
Physical formSterile-filtered, freeze-dried
Storage2-8°C; -20°C long term
DocumentationLot-specific Certificate of Analysis

Documentation & quality

Tesamorelin passes the same five-stage PX1 quality process applied to every product: HPLC potency analysis, mass-spectrometry identity and purity confirmation, pH and stability validation, sterility and endotoxin (LAL) testing, and QC batch-consistency verification.

A lot-specific Certificate of Analysis ships with every order. The lot number printed on your vial matches the lot ID on the document, so the material on your bench can always be checked against the data on file.

References & research

Selected peer-reviewed literature on Tesamorelin (via PubMed), provided for educational context. A reference does not imply a clinical claim for PX1 Labs products.

  1. Body composition, hepatic fat, metabolic, and safety outcomes of tesamorelin in HIV-associated lipodystrophy: a meta-analysis of RCTs.
  2. Efficacy and safety of tesamorelin in people with HIV on integrase inhibitors.
  3. Effects of tesamorelin in HIV-infected patients with abdominal fat accumulation: a randomized placebo-controlled trial.

Tesamorelin — questions

How large is the Tesamorelin peptide?

Tesamorelin is a 44-amino-acid peptide — one of the larger compounds in the PX1 catalog. Exact molecular weight for your lot is documented on the Certificate of Analysis.

What is included with the order?

A 10 mg lyophilized vial plus a lot-specific Certificate of Analysis confirming 99%+ identity purity by HPLC and identity by mass spectrometry.

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