Tesamorelin
Tesamorelin is a GHRH analogue that holds US approval for a specific indication — making it one of the most documented compounds in the GH category.
Also known as: GHRH analogue, FDA-approved (US)
Research context
- One of the few compounds here with a formal US approval history.
- Extensively studied in visceral fat research.
- Available in 5mg and 10mg.
What tesamorelin is
Tesamorelin is a synthetic analogue of growth hormone-releasing hormone (GHRH). Where the body's own GHRH is a short 44-amino-acid peptide, tesamorelin is the same 44-residue sequence with a single modification on the N-terminus, which is what extends its stability in circulation and makes it practical to handle as a lyophilised research peptide.
That one structural change is why tesamorelin sits apart from most compounds in the growth-hormone category: it is not a “designer” secretagogue built for research convenience, it is a close analogue of a natural signalling peptide, and it carries a formal regulatory history that almost nothing else on this shelf shares.
Why it stands out in the GH category
Most GH-pathway peptides — ipamorelin, GHRP-2, GHRP-6, CJC-1295 — are studied for how they act on the ghrelin receptor or the GHRH receptor. Tesamorelin is the one with a completed pivotal clinical programme and an approved product behind it in the United States, so the compound itself has a deeper published record than its shelf-mates: pharmacokinetics, receptor binding and downstream endocrine endpoints are documented in peer-reviewed literature rather than inferred.
For anyone researching the GH axis, that documentation is the point. You are not working from forum lore — you are working from a body of controlled data.
Tesamorelin vs other GHRH / GHRP compounds
| Compound | Receptor / class | Where it differs |
|---|---|---|
| CJC-1295 (no DAC) | GHRH analogue | Also a GHRH analogue, engineered for a longer half-life by a different route and far less clinically documented. |
| Ipamorelin | Ghrelin-receptor agonist | A selective GHRP acting on a different receptor entirely, so it is complementary rather than interchangeable in study design. |
| GHRP-2 | Ghrelin-receptor agonist | Broader secretagogue activity and a much lighter literature base. |
| AOD-9604 | GH fragment (176–191) | Not a secretagogue — a fragment of GH studied for a different downstream pathway. |
The practical takeaway: if the research question is about GHRH-receptor signalling with a well-characterised reference compound, tesamorelin is the cleanest comparator on the shelf. If the question is about the ghrelin receptor, start with ipamorelin.
How it is supplied and handled
Tesamorelin ships as a lyophilised (freeze-dried) powder in a sealed vial — the standard stable form for research peptides. It is available here in 5mg and 10mg vials. Once reconstituted with bacteriostatic water it should be kept refrigerated and handled cold-chain; the general reconstitution guide covers the volumes, the arithmetic and the storage handling that apply to this class of compound.
Every batch is supplied with a certificate of analysis. Our lab and COA policy explains what is tested and what the documentation covers — if you need a batch-specific COA before ordering, ask via the contact page and we will send it.
Ordering, payment and delivery
Pricing is per single vial — no minimum order, no bundle you have to take to get a sensible rate. Card checkout runs on Stripe; bank transfer is available at 10% off and confirms on clearance. UK dispatch is cold-chain, and delivery sets out the timelines and what to expect on arrival.
Common questions
What is the difference between tesamorelin and CJC-1295?
Both are GHRH analogues, so both act on the GHRH receptor. Tesamorelin is a modified natural 44-residue GHRH with a substantial clinical literature behind it; CJC-1295 is a differently engineered analogue aimed at a longer half-life with far less clinical documentation. For a research setting, tesamorelin is the better-characterised reference compound.
Is tesamorelin a research chemical or a medicine?
As sold here, it is a research chemical. It is not a licensed medicine in the UK, it is not for human or veterinary use, and nothing on this page is medical advice or a dosing recommendation.
What strengths do you stock?
5mg and 10mg vials. The 5mg is £18.70 and the 10mg is £34 per vial, with a 10% discount on bank transfer.
Is there a minimum order?
No. Pricing is per vial, so you can order a single vial or as many as you need.
Does it come with a COA?
Yes — a certificate of analysis accompanies every batch. COA on request before you order if you need the documentation up front.
How is it shipped?
Lyophilised powder, cold-chain UK dispatch. See the delivery page for timelines and handling on arrival.