Last updated: May 2026
Summary: Tesamorelin is a synthetic 44-amino-acid analog of growth hormone-releasing hormone (GHRH 1-44). PeptideDropship supplies research-grade Tesamorelin to verified B2B partners under strict research-use-only labeling — distinct and separate from any clinical-grade or therapeutic-use supply chain. 99%+ purity verified by HPLC and mass spectrometry, third-party COAs per batch, no MOQ, US 24-hour fulfillment. For research use only — not for human consumption.
Important context
Tesamorelin is the active ingredient in a prescription pharmaceutical approved in some jurisdictions for a specific clinical indication. Research-grade Tesamorelin supplied through PeptideDropship is for laboratory research only and is a distinct, separate supply chain from clinical-grade therapeutic product. Partners and end users are responsible for ensuring research-use-only labeling and compliance with all applicable regulations. PeptideDropship does not supply Tesamorelin for clinical, therapeutic, or human-administration applications.
Technical specifications
| Parameter | Value |
|---|---|
| Peptide name | Tesamorelin |
| Type | Synthetic 44-amino-acid GHRH (1-44) analog |
| Modification | N-terminal trans-3-hexenoyl modification |
| Molecular formula | C₂₂₁H₃₆₆N₇₂O₆₇S |
| Molecular weight | 5135.81 g/mol |
| CAS number | 218949-48-5 |
| Form | Lyophilized white powder |
| Standard pack sizes | 1 mg, 2 mg, 5 mg vials |
| Storage | −20°C lyophilized; 2–8°C after reconstitution |
Manufacturing and quality control
Tesamorelin is produced via solid-phase peptide synthesis (SPPS). Because the molecule is large (44 amino acids) and includes a non-standard N-terminal modification, manufacturing requires careful synthesis and rigorous analytical verification. Every batch is independently analyzed by a third-party laboratory before release. Standard QC includes:
- Mass spectrometry for molecular weight confirmation (especially critical for verifying the full 44-residue length without truncations)
- Reverse-phase HPLC for purity quantification (99%+ standard)
- Counterion content documentation (typically acetate or TFA salt)
- Karl Fischer water content
- LAL endotoxin testing available on request
The full Certificate of Analysis ships with every order.
Wholesale availability
- No minimum order quantity
- Tiered pricing — per-unit cost decreases with monthly volume
- 24-hour fulfillment from US-based warehouse
- API integration for automated order routing
White-label and private-label options
Generic, white-label, or private-label fulfillment available. See the white-label vs. private-label guide.
Packaging, shipping, and storage
Tesamorelin ships as lyophilized powder in sealed amber vials with tamper-evident closure. Shock-protection packaging is standard. Cold-chain shipping is available. Because of the larger molecular size and the non-standard N-terminal modification, Tesamorelin is somewhat more sensitive to storage conditions than smaller peptides — partners should store lyophilized at −20°C and minimize freeze-thaw cycles after reconstitution.
Compliance and labeling
Tesamorelin is supplied to verified B2B partners exclusively for research use under strict research-use-only labeling. The clinical pharmaceutical version (where applicable) is a separate supply chain not represented by this product. Resellers are responsible for clearly distinguishing research-grade material from clinical-grade material in all customer-facing materials, maintaining research-use-only labeling, the FDA disclaimer, and compliance with applicable state, local, and international regulations governing both research peptides and (where applicable) controlled pharmaceuticals.
FAQ
How does Tesamorelin compare to Sermorelin and CJC-1295?
All three are GHRH analogs but at different lengths: Sermorelin is the 29-amino-acid truncated GHRH (1-29); CJC-1295 (both DAC and non-DAC variants) is also based on GHRH (1-29); Tesamorelin is the full-length 44-amino-acid GHRH (1-44) with an N-terminal modification. They are chemically distinct compounds with different molecular weights, different stability profiles, and different research profiles. See the Sermorelin and CJC-1295 pages for comparison.
What pack sizes are available?
Standard pack sizes are 1 mg, 2 mg, and 5 mg lyophilized vials. Custom pack sizes available through private-label fulfillment.
What’s the standard purity?
99%+ verified by HPLC and confirmed by mass spectrometry. The full molecular-weight verification is especially important for a 44-residue peptide because truncated synthesis products are a real possibility — the COA verifies full-length sequence integrity.
Are sample COAs available?
Yes. Verified partners can request COAs from recent batches before placing an order.
How is Tesamorelin stored?
Lyophilized at −20°C for long-term stability. After reconstitution, store at 2–8°C, minimize freeze-thaw cycles, and use within the documented stability window appropriate to the research application.
Get started
Apply for verified partner access. For other GHRH-analog options, see the Sermorelin page or the CJC-1295 page. Browse the full wholesale catalog.
These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any condition. For research purposes only — not for human consumption. PeptideDropship sells research-grade peptides exclusively to verified B2B partners under research-use-only labeling. Research-grade Tesamorelin supplied here is a distinct and separate supply chain from any clinical-grade or therapeutic-use pharmaceutical product.