Same class, different molecules. Here is what separates two GHRH analogs that are often confused.
Both belong to the same class of GHRH analogs, which is why they get conflated.
They are different molecules with different structures.
What each one is
Sermorelin
Corresponds to GHRH(1–29): the first 29 amino acids of growth hormone
releasing hormone, which is 44 amino acids in full. The literature describes this fragment as
carrying the biological activity of the whole molecule.
Tesamorelin
A stabilised GHRH analog. It carries a modification intended to increase
resistance to enzymatic degradation compared with the unmodified sequence.
Side by side
Sermorelin
Tesamorelin
Molecular class
GHRH analog
GHRH analog
Structure
GHRH(1–29)
Stabilised GHRH analog
Modification
None, native fragment
Stabilising modification
Vial size
10mg
10mg
Price
$200
$150
Regulatory note
Tesamorelin is approved in some jurisdictions for specific clinical indications. That does not
change what we supply: research-grade material for laboratory use, not for human use. Nothing we
sell is supplied as a medicine.
Common questions
Are sermorelin and tesamorelin the same?
Both are GHRH analogs, so they belong to the same class, but they are different molecules. Sermorelin corresponds to the first 29 amino acids of GHRH. Tesamorelin is a stabilised analog with a modification that increases its resistance to enzymatic breakdown.
What does GHRH(1-29) mean?
Growth hormone releasing hormone is 44 amino acids long. The first 29 carry the biological activity described in the literature, and sermorelin is that fragment.
How do they differ practically?
Price and vial size are the visible differences. Sermorelin is $200 for a 10mg vial; tesamorelin is $150 for 10mg.
Is tesamorelin a registered medicine?
Tesamorelin is approved in some jurisdictions for specific clinical indications. Evra supplies research-grade material for laboratory use only, not for human use.
For research use only. This page describes what these compounds are and what published research has investigated. It does not recommend one over another, does not describe any effect in humans, and is not medical advice or a dosing recommendation. Evra Peptides products are supplied strictly for laboratory research and are not for human or veterinary consumption, nor for diagnostic or therapeutic use. You must be 18 or over to order.