How it works.
Vasoactive intestinal peptide (VIP) is a 28-residue member of the secretin/glucagon peptide superfamily. It signals through the class-B G-protein-coupled receptors VPAC1 and VPAC2, coupling primarily to adenylate cyclase and cAMP. In published research it is characterized for vasodilatory effects, anti-inflammatory and immunomodulatory activity, roles in the suprachiasmatic-nucleus circadian pacemaker via VPAC2, and neuroprotective signaling. Its broad receptor expression makes it a widely studied endogenous regulatory peptide.
Verified buyer notes.
Initials only — every quote is verified against an order record. We don’t ghost-write reviews.
“COA matched what we ran in-house. Powder reconstituted clean, no haze. Did exactly what we needed it to.”
“Switched after two bad lots from a previous source. Three orders in, zero issues.”
“Asked support a purity question and got the raw HPLC trace back within the hour. That transparency is why we reorder.”
The shared signature.
A foundational redox cofactor studied for its role in mitochondrial function, sirtuin signaling, and cellular energy metabolism.
A 16-amino-acid mitochondrial-derived peptide encoded within the 12S rRNA region of mitochondrial DNA, studied for its role in AMPK signaling, metabolic homeostasis, and the cellular stress response.
Sold outA cell-permeable mitochondria-targeting tetrapeptide studied for its association with the inner-membrane phospholipid cardiolipin and its effects on mitochondrial bioenergetics.
Sold outA cyclic heptapeptide analog of α-MSH studied as a broad melanocortin-receptor agonist, with documented effects on melanogenesis pathways in research models.