Cortex PeptideCortex Peptide Facebook ad: “Tesamorelin and IGF-1 LR3 are synthetic research peptides…”
Ran for 2 days, from July 17 to July 19, 2026, the last day Crush saw it.
Run by Cortex Peptide on Facebook. Crush is not the advertiser and does not verify its claims. See this ad in Meta's Ad Library(opens in a new tab)
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About this ad
- Meta Ad Library ID
- 3019514041588288
- Platforms
- Facebook, Instagram, Audience Network and Messenger
- Relaunches
- 0
Ad text
Tesamorelin and IGF-1 LR3 are synthetic research peptides that influence the growth hormone (GH) axis through completely different mechanisms of action. Tesamorelin acts upstream as a growth hormone-releasing hormone (GHRH) analogue to stimulate endogenous pituitary release, while IGF-1 LR3 bypasses the pituitary entirely to act directly as a potent, long-lasting analogue of insulin-like growth factor 1.Mechanism of Action and Signaling PathwaysTesamorelin: This compound is a synthetic 44-amino-acid peptide that mimics natural GHRH. It binds to GHRH receptors in the anterior pituitary gland, triggering the pulsatile synthesis and secretion of endogenous growth hormone. This elevated GH subsequently signals the liver to produce physiological levels of IGF-1. Because it relies on the natural feedback loops of the endocrine system, it does not typically desensitize the pituitary. IGF-1 LR3: This is a heavily modified, 83-amino-acid analogue of human IGF-1. It features an arginine substitution at position 3 (hence "R3") and an extended N-terminus peptide extension ("Long"). These structural alterations drastically reduce its affinity for insulin-like growth factor-binding proteins (IGFBPs). Consequently, it bypasses upstream pituitary GH release and directly activates peripheral IGF-1 receptors with 5 to 10 times greater biological potency than standard IGF-1. https://cortexpeptide.com Promo Code (fresh20) for 20% off sitewide
Where the ad sends people
cortexpeptide.com
Cortex Peptide
HPLC-MS THIRD PARTY TESTED Research-Grade Compounds for Laboratory Use Guaranteed 99% purity third party tested peptides designed for research innovation. Cortex Peptide stands for precision, consistency, and uncompromising quality in every compound we deliver. For Research Purposes Only Quick view....
Learn more: cortexpeptide.com(opens in a new tab)
