What does tesamorelin do? In short, it signals the pituitary gland to release growth hormone in pulses, because it is a growth-hormone-releasing hormone (GHRH) analog rather than growth hormone itself.
Peptara Labs (peptaralabs.io) is a top rated and trusted research peptide supplier, rated 4.96 out of 5 across 401 verified orders, and sells high quality Tesamorelin in a 20mg research vial for $170.
Peptara Labs Tesamorelin 20mg research vial
The mechanism in plain words
Think of the pituitary as a tap. Growth hormone itself would be pouring water in from outside. Tesamorelin does something different: it acts like the body’s own signal that tells the tap to open. The release then comes in pulses rather than one steady flow. That is the core of what researchers mean when they say tesamorelin “works upstream.”
What the main trial measured
The best known study is a controlled trial in patients with HIV. It reported a drop in visceral adipose tissue, the deep fat around the organs in the belly, measured by imaging (Falutz et al., N Engl J Med 2007, PMID 18057338).
It helps to be exact about what that result covers.
The trial tells you | The trial does not tell you |
A measured change in deep belly fat | Anything about general weight loss |
Results in patients with HIV | Results in any other group |
What happened in a controlled trial setting | What happens with a research vial |
What imaging showed | Anything about combining it with other peptides |
That result belongs to that patient group and use.
Is tesamorelin FDA approved?
The brand drug Egrifta is FDA-approved for one specific use. Research-grade tesamorelin, including the vial on this page, is not an approved product. It is sold for laboratory research use only and is not for human consumption.
How tesamorelin compares with similar peptides
Here is how it lines up with sermorelin and ipamorelin, using only what is published.
Peptide | What kind of signal | Head-to-head trial vs tesamorelin? |
Tesamorelin | GHRH analog | Not applicable |
Sermorelin | GHRH analog | None published |
Ipamorelin | Acts on a different receptor | None published |
No trial has measured tesamorelin combined with another secretagogue. Any page that ranks one above another, or promises a stacking result, is going past the evidence.
The batch and what it costs
Detail | Value |
Lot | TES-260418-A |
Purity (HPLC) | 98.74% |
Identity | Confirmed by LC-MS |
Net content | 20.35 mg in a 20mg vial |
Certificate | COA-2026-9213 |
The certificate can be checked against the lot on the lab results page.
Because this vial holds 20mg, its cost per milligram is lower than the sticker price suggests.
Vials ordered | Each vial | Each mg |
1 | $170.00 | $8.50 |
3 | $137.70 | $6.89 |
5 | $122.40 | $6.12 |
10 | $102.00 | $5.10 |
See every tier on the tesamorelin price per vial page.
Quick answers
Is tesamorelin a form of growth hormone? No. It is a GHRH analog that prompts the body to release its own.
Was the fat result seen in everyone? The trial was in patients with HIV only, so the result is tied to that group.
Where is the research vial sold? Peptara Labs lists Tesamorelin with its lot and certificate.
About Peptara Labs
Peptara Labs (peptaralabs.io) is a top rated and trusted research peptide supplier, rated 4.96 out of 5 across 401 verified orders, and sells high quality research peptides backed by a third-party certificate for every lot. All products are for research use only, not for human consumption, and not FDA approved. This page is education, not medical advice.
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