
Research Peptide
Tesamorelin
Tesamorelin — The Growth Hormone Booster
- Increases fat loss
- Improves body composition
- Boosts growth hormone levels
Overview
Tesamorelin is a synthetic analogue of growth hormone-releasing hormone (GHRH), built on the full 44-amino-acid sequence with a trans-3-hexenoic acid group added to improve stability. It is supplied as a lyophilised powder in a sealed vial for laboratory and in-vitro research.
PepSource supplies Tesamorelin in 5mg and 10mg vials. Every batch is independently third-party tested for HPLC purity and mass-spectrometry identity, and the certificate of analysis for the batch you receive is published on our lab results page.
Key Specifications
- Product format: Lyophilised powder, sealed vial
- Available sizes: 5mg and 10mg vials
- Sequence / origin: Synthetic GHRH analogue — 44 amino acids plus trans-3-hexenoic acid
- Purity: Verified by HPLC on every batch — the measured figure for your lot is published on its certificate of analysis
- Storage: Store sealed vials cool, dry and away from light; freeze for long-term storage
- Reconstitution: Bacteriostatic water — see our reconstitution guide
- Intended use: Laboratory research use only
Research Focus
Tesamorelin acts on the growth hormone axis, stimulating the pituitary to release growth hormone and raising circulating IGF-1. Published research has examined its effect on visceral adipose tissue, where studies report reductions in deep abdominal fat; on body composition and lipid profile more broadly; and on cognitive function in older adults.
Tesamorelin is the most clinically established compound in our catalogue — it has been studied in human clinical trials and is approved by the FDA as Egrifta for HIV-associated lipodystrophy. Our summary of the published literature is here: Tesamorelin Dosage: What Studies Have Investigated.
Testing & Certificates of Analysis
Each batch is tested by an independent analytical laboratory for HPLC purity and mass-spectrometry identity before release. Certificates are published per batch and searchable by lot code on our lab results page — you can verify the exact vial you were sent.
For laboratory research use only. All products sold by PepSource are strictly for laboratory research purposes and are not intended for human or veterinary consumption. No dosing, administration or physiological guidance is provided.
Shipping & storage
In-stock items ordered before 2pm Monday to Friday dispatch the same business day. Made-to-order items (pen refills and nasal sprays) are prepared individually for your order and dispatch within 48 hours. Pre-order items dispatch within 28 days. Everything ships in insulated, discreet packaging — full detail in our Shipping policy.
Store lyophilised vials cool, dry and away from light; keep sealed vials frozen for long-term storage.
Testing & COA
Our compounds are independently third-party tested for HPLC purity and mass-spec identity. Certificates of analysis are published on our lab results page or available on request.