Side-by-Side Comparison · 2026

Ipamorelin vs Tesamorelin

Ipamorelin vs Tesamorelin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Ipamorelin
Growth Hormone

Ipamorelin is a synthetic 5-amino acid growth hormone releasing peptide (GHRP) that selectively stimulates pituitary GH secretion without raising cortisol, prolactin, or appetite hormones. Acts on ghrelin receptors (GHSR-1a) for clean pulsatile GH release. Phase I/II research sta...

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Tesamorelin
Growth Hormone

Tesamorelin is an FDA-approved synthetic GHRH analog (Egrifta) modified with trans-3-hexenoic acid to resist DPP-IV enzymatic cleavage, doubling its effective half-life. It restores pulsatile GH secretion and preferentially reduces visceral adipose tissue. Approved in 2010 for HI...

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Key Parameters
Parameter Ipamorelin Tesamorelin
Category Growth Hormone Growth Hormone
Research Extensively Studied FDA Approved
Half-Life ~2 hours ~26–38 min
Typical Dose 100–300 µg 1–2 mg
Frequency 1–3× daily Once daily
Route Subcutaneous Subcutaneous
FDA Status Not Approved Approved

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Frequently Asked Questions
What is the difference between Ipamorelin and Tesamorelin?
Ipamorelin: Ipamorelin is a synthetic 5-amino acid growth hormone releasing peptide (GHRP) that selectively stimulates pituitary GH secretion without raising cortisol, prolactin, or appetite hormones. Acts on ghr... Tesamorelin: Tesamorelin is an FDA-approved synthetic GHRH analog (Egrifta) modified with trans-3-hexenoic acid to resist DPP-IV enzymatic cleavage, doubling its effective half-life. It restores pulsatile GH secre...
Which has a longer half-life, Ipamorelin or Tesamorelin?
Ipamorelin half-life: ~2 hours. Tesamorelin half-life: ~26–38 min.
Can you stack Ipamorelin and Tesamorelin?
Ipamorelin and Tesamorelin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.