Name: Tesamorelin 5mg (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-TSM5
Price: 90.00 USD
Availability: InStock

Tesamorelin at a glance

Tesamorelin, coded TH9507 during development, reproduces the full 44-residue sequence of human growth hormone-releasing hormone and caps the N-terminus with a trans-3-hexenoyl group. Native GHRH is cleaved rapidly by dipeptidyl peptidase-4, and the cap is intended to resist that cleavage while keeping receptor activity intact. The molecule has the formula C221H366N72O67S and a molecular weight near 5136 g/mol. Listings on this marketplace supply it as lyophilized powder for laboratory study.

Price and availability

This is HK Peptide‘s kit of 10 vials at 5mg each (50 mg in total), dispatched from Hong Kong, Hong Kong. The price is $90.00, or $1.80 per milligram of peptide. Across 20 brands listing Tesamorelin here, the middle half of prices falls between $1.50 and $5.60 per mg; this kit is inside that range. Funds stay in escrow and are released to HK Peptide only when you mark the order as received.

This listing: HK Peptide Tesamorelin

Brand: HK Peptide
Kit: 10 vials × 5 mg (50 mg in total)
Price per vial: $9.00
Price per mg: $1.80
Other strengths: 10mg $150.00
Also sold by: UWA Biotech 5mg $115.00 · TFC Peptides 5mg $75.00 · Cyprus Peptides 5mg $212.00 · Vital Edge Science Tesamorelin $97.00 · Peptide Express 10mg $70.00 · Core Peptides 10mg $75.00

Lab testing

HK Peptide published a Janoshik #152644 report for this compound. Test: Purity & Content (HPLC). Result: 99.37% purity · 10.55 mg. Tested Apr 29, 2026. The vial tested was a different strength than this listing, so treat it as evidence for the compound and ask for the batch COA for this exact strength. Verification key N3ZD4G7XHWN1 can be checked at janoshik.com.

View the report · How to read it (Testing 101) · Every report for this compound

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

What it is studied for

The peptide is a GHRH-receptor agonist. Binding to these receptors on anterior pituitary somatotrophs activates cAMP signaling, which promotes both synthesis and pulsed secretion of growth hormone; circulating GH then prompts the liver to raise IGF-1. Because the signal enters at the hypothalamic-pituitary level, somatostatin tone and IGF-1 negative feedback continue to shape output, a feature researchers often contrast with giving exogenous GH. Work in this area also looks at how the stimulated GH pulses relate to lipolysis in visceral fat depots, though the full chain from pulse pattern to tissue effect is still under study.

Research and regulatory status

Tesamorelin holds an FDA approval for reducing excess abdominal fat in people with HIV-associated lipodystrophy, and the randomized trials behind that approval measured visceral adipose tissue by imaging. Later investigator-led studies explored liver fat, cognition in older adults and other metabolic endpoints, with mixed and still-maturing results. Research-grade tesamorelin sold through GLP1 Forum Escrow is not the pharmaceutical product; it is offered for laboratory work, and quality varies by manufacturer, so batch reports deserve a close read.

Checking the lab data

For a 44-residue peptide, identity should rest on mass spectrometry showing a mass consistent with roughly 5136 Da, often presented as a deconvoluted electrospray spectrum. HPLC purity should come with the trace so related impurities, such as deletion sequences or oxidized methionine forms, are visible rather than summarized away. A report should also state net peptide content, describe the cake as white and intact, and tie every result to a batch number printed on the vial.

This listing has an independent lab report attached; the testing panel above summarises what the tested sample contained against its label.

Listing details

Compound: Tesamorelin
Synonyms: TH9507
Class: Growth hormone-releasing hormone (GHRH) analogue
Format: Lyophilized (freeze-dried) powder
Molecular formula: C₂₂₁H₃₆₆N₇₂O₆₇S
Molecular weight: 5136 g/mol
Vial strength: 5mg
Vials per kit: 10
Total content: 50 mg
Price per mg: $1.80
Sold by: HK Peptide
Ships from: Hong Kong, Hong Kong
Lab report: Independent report attached

Storage and preparation

Freeze-dried peptide keeps best sealed, cold and dark. Once it has been dissolved, refrigerate it, avoid repeated warming and follow the stability limits in your study protocol.

Concentration arithmetic: one 5 mg vial dissolved in 2 mL gives 2.5 mg/mL, or 5 mg/mL in 1 mL. The Research Lab calculator in your dashboard handles any other volume.

Buyer questions

Why was the N-terminal modification needed at all?

Unmodified GHRH is broken down quickly in circulation by enzymes that clip its first two residues, which limits its usefulness in experiments that need a sustained signal. The hexenoyl group was added to slow that degradation, making the analogue more stable without altering the part of the sequence that engages the receptor.

Is tesamorelin commonly paired with other compounds in research?

It is. Because it acts on the GHRH receptor, investigators sometimes study it alongside ghrelin-receptor agonists such as ipamorelin, which reach somatotrophs through a separate receptor. This catalogue also carries a tesamorelin and ipamorelin combination listing for that purpose, although data on fixed combinations are far thinner than for tesamorelin alone.

How much Tesamorelin is in this listing?

10 vials of 5mg each — 50 mg in all. Where a lab report exists, the testing panel above shows what the brand's tested sample actually measured.

What if the parcel never arrives?

Open a claim from your order page. The payment is still in escrow at that point, so a claim decided in your favour is refunded to your Escrow Wallet.

Supplied for laboratory research only. Not for human or veterinary use, and not a substitute for any prescription medicine. Nothing on this page is medical advice.