Tesamorelin vs CJC-1295: Comparing GHRH Analogues

Tesamorelin and CJC-1295 are both growth-hormone-releasing-hormone (GHRH) analogues studied in the GH axis, but they differ in structure, half-life and regulatory standing.

7 min read · Published 2026-06-23

Tesamorelin vs CJC-1295: At a Glance

Both Tesamorelin and CJC-1295 are GHRH analogues studied for their action on the growth-hormone axis. Tesamorelin is the full GHRH(1–44) sequence with a stabilising modification and exists as an approved medicine for a narrow indication; CJC-1295 is a shorter GHRH analogue used as a research compound.

Research use only. Both compounds are supplied for in-vitro laboratory research. Neither is a medicine, and neither is for human or veterinary consumption, administration, or therapeutic use.

How They Differ — Structure & Half-Life

Tesamorelin carries a trans-3-hexenoic acid modification on the full GHRH sequence and has a short half-life producing a discrete GH pulse. CJC-1295 (commonly the "No-DAC"/Mod GRF 1-29 form) is a modified shorter GHRH fragment studied for GH-releasing activity. Both ultimately act at the GHRH receptor but differ in sequence and pharmacokinetics.

Evidence & Regulatory Status

Tesamorelin is FDA-approved in the US for HIV-associated lipodystrophy but unlicensed in the UK; CJC-1295 is a research compound with no approval. Research-grade material of either is supplied for laboratory use only. For a related GH-axis comparison see CJC-1295 vs Ipamorelin.

Sourcing for Research

Verify any GHRH analogue against a batch-matched COA. View Tesamorelin and CJC-1295 product details.

Frequently Asked Questions

What is the difference between Tesamorelin and CJC-1295?

Tesamorelin is the full GHRH(1-44) sequence with a stabilising modification and an approved medical form; CJC-1295 is a shorter GHRH analogue used as a research compound.

Are Tesamorelin or CJC-1295 approved in the UK?

Neither is licensed in the UK. Tesamorelin is FDA-approved in the US for a narrow indication only; CJC-1295 has no approval. Both are research-use-only.

Do they work the same way?

Both act at the GHRH receptor to influence growth-hormone release, but they differ in structure and pharmacokinetics.

Related Guides

• What Is Tesamorelin? GHRH Analogue Mechanism & UK Status
• CJC-1295 vs Ipamorelin: How These Two Peptides Compare
• What Is a Certificate of Analysis (COA)? How to Read One

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