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Ipamorelin is one of the most popular growth hormone research peptides in the UK. This guide explains what ipamorelin is, why scientists call it "selective", how it compares with other peptides, and what to check before you buy ipamorelin in the UK for laboratory research.
Ipamorelin is a small lab-made peptide made of five amino acids. It belongs to a group called growth hormone secretagogues: substances that cause the pituitary gland to release growth hormone.
It was first reported in 1998 by researchers looking for a "cleaner" growth hormone secretagogue than the ones available at the time.
Ipamorelin works through the ghrelin receptor (GHS-R1a). Ghrelin is often called the "hunger hormone" because it is made in the stomach and signals hunger. It also tells the pituitary gland to release growth hormone.
Ipamorelin copies this growth hormone signal. The ghrelin receptor is also found in the gut, which is why ipamorelin has been studied for gut movement too.
Older peptides such as GHRP-6 and GHRP-2 released growth hormone, but they also raised other hormones: cortisol (a stress hormone) and prolactin. In the original ipamorelin studies, it released growth hormone with little change in cortisol or prolactin.
This "selective" effect has been repeated in many studies, and it is the main reason ipamorelin is popular in research.
Yes. Ipamorelin is legal to buy in the UK as a research chemical. It is not a licensed medicine and must be sold without dosing instructions or health claims.
Ipamorelin is widely sold, so prices vary a lot. Choose on quality, not just price. Look for:
UK Peptides (ukpeptides.info) tests every ipamorelin batch at an independent laboratory, with the Certificate of Analysis linked on the product page.
Store the freeze-dried powder frozen and away from light and moisture, following the product page guidance.
In the UK, ipamorelin is sold only for laboratory research. Scientists use it to study growth hormone release and the ghrelin receptor.
No. Ipamorelin is a peptide, a short chain of amino acids. Steroids are a different type of molecule.
No. It signals the pituitary gland to release its own growth hormone.
It acts on the "hunger hormone" receptor, but studies report a much weaker hunger effect than older peptides such as GHRP-6.
Related guides: Tesamorelin UK Guide · Kisspeptin UK Guide
View Ipamorelin on UK Peptides → https://www.ukpeptides.info/product/ipamorelin-10mg
For laboratory research use only. Not for human or veterinary use.
This article is provided for educational purposes to support laboratory research. All products supplied by UK Peptides are for in-vitro research use only and are not medicines, supplements, or intended for human or veterinary consumption.
