Tesamorelin is a man-made copy of growth-hormone-releasing hormone (GHRH) (formula C221H366N72O67S, average mass 5,136 g/mol, CAS 218949-48-5). Tesamorelin is sold here for laboratory research in 3 sizes (5mg to 20mg), from $45.00 a vial. It is not an FDA-approved medicine. Research use only, and never for people or animals.
Tesamorelin specifications
| Product name | Tesamorelin |
|---|---|
| Also sold as | Tesamorelin peptide, tesa, tesamorelin acetate |
| Formula | C221H366N72O67S |
| Average mass | 5,136 g/mol |
| CAS number | 218949-48-5 |
| Physical form | Freeze-dried powder, a solid cake in a sealed vial |
| Appearance | White to off-white cake |
| Sizes on this page | 5mg · 10mg · 20mg |
| Purity specification | ≥99% by RP-HPLC. The number for the lot you receive is whatever its own certificate says. |
| Identity check | Mass spectrometry, read against the mass this compound should have |
| Net content | Weighed per lot and reported separately from purity |
| Lot documentation | 1 of 3 sizes has a published Kovera Labs certificate (20mg, lot LF-28C-2609); the other 2 are in testing |
| Storage | Sealed, cold and out of the light |
| Ships from | Santa Ana, California by USPS with tracking on every order, same business day on verified in-stock orders placed before 12 PM Pacific |
| Intended use | Laboratory research only. Not for human or animal use. |
What is Tesamorelin, and what is it used for?
Tesamorelin is a man-made copy of the hormone that tells the pituitary gland to release growth hormone. An approved prescription medicine contains this same ingredient. What is sold here is laboratory material, not a medicine.
Tesamorelin is also listed and searched as Tesamorelin peptide, tesa, tesamorelin acetate. They all mean the same compound. Supplier lists write it as Tesamorelin peptides or peptide Tesamorelin as well; every one of those is this record. A name is not a test, which is why the lot record further down counts for more than the wording on a label.
Chemically: molecular formula C221H366N72O67S, average mass 5136 g/mol (PubChem CID 16137828). Those figures are what the identity test on a certificate is read against.
A man-made copy of growth-hormone-releasing hormone (GHRH).
It works on the GHRH receptor. It is a hardier copy of the hormone that triggers growth hormone, rather than growth hormone itself, which matters: it acts one step earlier in the chain.
There is a registered clinical record, and an approved medicine containing tesamorelin exists under its own brand name for one specific condition.
What is sold here is a research chemical, not a drug product. Listing it is not an approval and not a claim that it is equivalent to or a fit substitute for any medicine.
Tesamorelin for sale: 5mg, 10mg and 20mg vials, price per mg
Tesamorelin is sold in 3 sizes here, 5mg, 10mg and 20mg, from $45.00 a vial. Tesamorelin cost and Tesamorelin price per mg by size are in the table, at each volume tier and on subscription; the per-mg figure under each price is the one that compares across sizes.
Volume and subscription pricing by size
| Size | One vial | 10–19 vials−10% | 20 vials−15% | Subscribe monthly−6% from shipment 2 | Availability |
|---|---|---|---|---|---|
| Tesamorelin 5mg | $45.00$9.00/mg | $40.50a vial · $8.10/mg | $38.25a vial · $7.65/mg | $42.30a vial, shipment 2 on · $8.46/mg | Backordered — waitlist |
| Tesamorelin 10mg | $80.00$8.00/mg | $72.00a vial · $7.20/mg | $68.00a vial · $6.80/mg | $75.20a vial, shipment 2 on · $7.52/mg | Backordered — waitlist |
| Tesamorelin 20mg | $150.00$7.50/mg | $135.00a vial · $6.75/mg | $127.50a vial · $6.38/mg | $141.00a vial, shipment 2 on · $7.05/mg | In stock |
Volume tiers are per size and do not combine across sizes (see bulk pricing). Subscribe & Save takes 6% every month, 4% every 2 months or 2% every 3 months off from shipment 2, two shipments minimum, and stacks on the volume tier: the lowest this record ever bills is $5.99 per mg, twenty 20mg vials on a monthly subscription from shipment 2 onward.
Nothing is added at checkout except the USPS shipping you choose; dispatch and delivery are the same on every order. The cost-per-milligram tool ranks the whole catalog by price per mg. The certificate walked through field by field: Where to Buy Tesamorelin Peptide: Buyer Checks.
Where to buy Tesamorelin: what to check before you order from anyone
Where to get Tesamorelin, and how to buy Tesamorelin online
You can buy Tesamorelin online here with guest checkout, and purchase Tesamorelin or order Tesamorelin in any size below; verified in-stock orders placed before 12 PM Pacific are dispatched the same day. If the question is where to get Tesamorelin or how to get Tesamorelin, the answer for a US laboratory is a supplier who publishes the certificate before you pay, which is the first of the five checks that follow.
Before ordering Tesamorelin from anyone, us included, run the 5 checks on verifying a certificate; the first is that the report resolves on the laboratory's own site, and a seller who cannot pass them is asking for the trust a certificate exists to replace.
Tesamorelin reviews
No customer review of Tesamorelin has been published yet, so there is no star rating here; when real ones exist the number will be the arithmetic of what people wrote. Ordered this record? Leave a review. A person reads every one before it appears.
Tesamorelin capsules, oral form or sublingual? What this vial is, and is not
Search results for Tesamorelin also show capsules, oral form, sublingual products, under listing titles such as tesamorelin tablets, tesamorelin peptide oral, tesamorelin pills, tesamorelin oral tablets, oral tesamorelin, tesamorelin pill form. Those are finished consumer goods made and marketed by other companies, and none of them is what this page sells. This record is freeze-dried Tesamorelin in a sealed glass vial, 5mg, 10mg and 20mg, with a lot certificate, supplied for laboratory work. Its certificate describes that powder, not a capsule, spray or cream, which carry other ingredients and sit under different rules.
Tesamorelin vs Ipamorelin and CJC-1295 (no DAC): different molecules, separate records
Tesamorelin vs Ipamorelin, or Ipamorelin vs Tesamorelin, is the comparison people search most, with CJC-1295 (no DAC) close behind, and they are not the same thing. Each is a different molecule with a different formula, mass and research record, and each has its own certificate here. Tesamorelin ipamorelin blend is searched too; no such blend is sold here, each is its own record with its own certificate, and a certificate for a blend from anyone else reports on the mixture, not on either compound alone.
Ipamorelin vs Tesamorelin: the same comparison, side by side
| Record | Class | Formula | Avg. mass | Sizes here |
|---|---|---|---|---|
| Tesamorelin | A man-made copy of growth-hormone-releasing hormone (GHRH). | C221H366N72O67S | 5136 | 5mg · 10mg · 20mg from $45.00 |
| Ipamorelin | A man-made five-building-block peptide that makes the pituitary release growth hormone. | C38H49N9O5 | 711.9 | 5mg · 10mg from $44.00 |
| CJC-1295 (no DAC) | A man-made 29-building-block copy of GHRH, also sold under the name Mod GRF(1-29). | C152H252N44O42 | 3367.9 | 5mg · 10mg from $34.00 |
Documentation compared in full: Tesamorelin vs Ipamorelin, side by side · Tesamorelin vs CJC-1295 (no DAC), side by side.
Tesamorelin guides and documentation
Written to answer the questions that come up around Tesamorelin specifically, what its paperwork should show, how it is handled, and how to judge a supplier selling it.
- Tesamorelin Certificate of Analysis: How to Read It
- Tesamorelin identity testing: what the mass spectrum fixes, and what it leaves open
- Tesamorelin storage and stability: what shortens the shelf life, and what protects it
- Where to buy Tesamorelin Peptide, and what its certificate has to show
The full library, grouped by what you came to answer, is in the laboratory guides.
The Tesamorelin certificate: lot, purity, identity, and how to verify it
A certificate answers identity, purity and net content as three separate questions, each with the method that produced it and the date it was run, how to read one covers what each field does and does not cover. For Tesamorelin that means a mass spectrum landing on 5,136 g/mol for C221H366N72O67S, the figure published against PubChem CID 16137828. The cataloged form is Tesamorelin, and the identity test resolves to that rather than to a related molecule with a similar name.
| Size | Lot | Identity method | Purity | Endotoxin · sterility · fentanyl | Test date |
|---|---|---|---|---|---|
| 20mg | LF-28C-2609 | LC-MS | 99.888% (RP-HPLC, C18, DAD @ 214 nm) | 2026-09-29 |
Testing by Kovera Labs. Every batch tested on or after October 1, 2026 includes endotoxin, sterility and fentanyl screening, in addition to identity, purity and net content. Open the report, then confirm it on the issuing laboratory's own site. If the identifier does not resolve there, or resolves to a different lot than the one printed on your vial, the document is worthless however convincing it looks.
The lot number on the certificate must match the lot printed on the vial you received. That match is the only thing tying the document to your material. Net content is reported separately from purity, because a vial can be highly pure and still hold less material than its label states.
Is Tesamorelin a prescription drug? FDA status, and what this listing is
FDA status, and what this listing is Approved as a prescription medicine, this material is not that product
An approved medicine sharing the same active ingredient does not make research-grade material a substitute for it. Approved products are made under pharmaceutical quality systems, checked against a written specification before release, and handed over on prescription. This is none of those things.
Status verified 2026-08-25. Check the primary source before relying on this summary.
It is sold as laboratory material under the research-use restriction below. Being listed is not an approval, and not a claim that it is safe, effective or right for any purpose. LabFirst is not a pharmacy or a compounding facility, this vial is not a compounded medicine, and no prescription is involved, because it is not sold for use in anyone. Where FDA-approved medicines containing this active ingredient exist, they are available only by prescription and are a different product from this one.
Tesamorelin research: what the published studies examine
Status: An approved medicine containing this active ingredient exists. Tesamorelin is a man-made copy of growth-hormone-releasing hormone. An FDA-approved prescription medicine containing it exists. What is listed here is laboratory material sold outside that regulated route.
Tesamorelin is a hardier copy of the human hormone that tells the pituitary to release growth hormone, with a small chemical group added to one end. That addition is there to slow down the DPP-4 enzyme, which is what cuts the natural hormone down to a few minutes in the blood. It works on the GHRH receptor on the pituitary, so it acts one step before growth hormone rather than supplying growth hormone directly.
That distinction matters: release still answers to the pituitary’s own controls and to the brakes that IGF-1 and somatostatin apply, instead of going around them the way injected growth hormone does. Tesamorelin is the one compound in this catalog that is an approved medicine. It is licensed for reducing excess belly fat in people with HIV-associated lipodystrophy, and its research record is correspondingly larger and more independent than anything else listed here.
| Reported observation | Model | Source |
|---|---|---|
| Over six months, belly fat around the organs fell by 42 square centimetres more than in the placebo group, and liver fat fell by 2.9 percentage points more. Fasting blood sugar rose briefly at two weeks and the difference had gone by six months. The authors call the study preliminary and ask for more work on how much it matters clinically and what happens long term. | randomised double-blind placebo-controlled trial in 50 antiretroviral-treated adults with HIV and abdominal fat accumulation | Stanley and colleagues, Effect of tesamorelin on visceral fat and liver fat in HIV-infected patients with abdominal fat accumulation: a randomized clinical trial, JAMA (2014)Investigator-initiated at Massachusetts General Hospital and NIH-supported, not a sponsor efficacy study. The population is narrow and the result should not be read past it. |
| Twenty weeks of treatment raised GABA in three brain regions measured, raised another marker in the frontal cortex and lowered a third in the posterior cingulate, all measured by MRI-based chemistry. The change in blood IGF-1 tracked the GABA change. No meaningful link was found between the brain-chemistry changes and how people actually performed on cognitive tests, and the authors say so plainly. | randomised placebo-controlled substudy, 30 adults aged 55 to 87, 17 with mild cognitive impairment | Friedman and colleagues, Growth hormone-releasing hormone effects on brain gamma-aminobutyric acid levels in mild cognitive impairment and healthy aging, JAMA Neurology (2013)University of Washington, NIH-funded. Included as mechanism: it measures neurochemistry, and the cognitive link is explicitly not established. |
Open questions. The evidence here is genuinely better than for most of this catalog, and it is also narrower than it first looks. The belly-fat result comes from adults with HIV-associated lipodystrophy, a specific metabolic condition, and that is the only use any regulator has approved. Applying it to people without that condition is an assumption, not a finding. The brain-chemistry work is interesting, and its own authors state that the chemical changes did not track cognitive results, so it should not be quoted as evidence about thinking or memory.
A short-lived rise in fasting blood sugar is a known and expected consequence of raising growth hormone, and it shows up in the trial data above. Finally, the approved product is a manufactured medicine with full release testing behind it, and a research vial carrying this name is not that object. Whether a given lot holds the right sequence is a question for a test on that lot.
Each row above describes an observation in the stated model. None of it describes what Tesamorelin would do in a person or an animal outside that model, and none of it is a recommendation to use it for anything.
How to store Tesamorelin: refrigeration and shelf life
Keep the sealed vial cold and out of the light and it stays as it left the lab. Once it is mixed into a solution, how long it holds up depends on the compound, what it was mixed with, how strong the solution is and how cold it is kept — too many variables for anyone to print one shelf life on a label. So laboratories write the date on whatever they prepare and keep their own record of it.
For solution preparation arithmetic on the bench, concentration, per-graduation values and molarity, use the vial concentration calculator, which opens with the Tesamorelin sizes stocked here already loaded. It covers laboratory measurement only and contains no administration guidance.
