Research Comparison
Ipamorelin vs Tesamorelin
A side-by-side research comparison of Ipamorelin and Tesamorelin drawn from Cedar Peptides' peptide database records.
Ipamorelin
Ipamorelin is a selective growth hormone releasing peptide (GHRP) that stimulates endogenous growth hormone (GH) secretion via activation of ghrelin (GHS-R1a) receptors in the pituitary. It is characterized by a highly selective profile, producing GH release without significant stimulation of cortisol or prolactin. This selectivity distinguishes it from earlier GHRPs, making it a preferred compound in research focused on body composition, recovery, sleep, and anti-aging. Its ability to preserve physiological GH pulsatility while minimizing off-target endocrine effects has positioned it as a core peptide in GH optimization protocols.
Tesamorelin
Tesamorelin is an FDA-approved synthetic growth hormone-releasing hormone (GHRH) analog designed for treating HIV-associated lipodystrophy. This 44-amino acid peptide with a trans-3-hexenoic acid modification at the N-terminus selectively reduces visceral adipose tissue while preserving subcutaneous fat, making it unique among growth hormone therapies. Approved under the brand name Egrifta, tesamorelin stimulates pulsatile GH release through GHRH receptor binding, elevating IGF-1 and driving selective visceral fat reduction. It has additionally been studied off-label for metabolic health, NAFLD treatment, cognitive enhancement, and anti-aging body composition protocols.
Reading a comparison
A comparison places two records side by side; it does not merge them. Each description above is drawn from that compound's own record, and the two were not necessarily characterised by the same methods, at the same time, or to the same level of detail. Before comparing any attribute, it is worth establishing that both records describe the substance you think they describe — names are not identifiers, and two entries sharing a name can differ in salt form, stereochemistry or the convention used to state a mass. Where a figure carries no method beside it, the comparison is between two reported numbers rather than between two measurements.