Peptide library

Plain-language reference for every research peptide we carry — mechanism, applications, half-life, and FAQs. Research or professional use only.

A plain-language reference for every peptide we carry: what it is, how it works, typical applications, half-life, reconstitution guidance, and frequently asked questions. Editorial content only — no pricing on these pages.

Every peptide in the library

Peptide	Category	Summary
BPC-157	Healing & Recovery	A 15-amino-acid peptide widely studied for tissue repair and gut integrity.
TB-500	Healing & Recovery	Synthetic fragment of Thymosin Beta-4 studied for cellular repair and migration.
Semaglutide	Metabolic & Weight	A long-acting GLP-1 receptor agonist extensively studied for metabolic health.
Tirzepatide	Metabolic & Weight	Dual GIP and GLP-1 receptor agonist studied for metabolic and weight outcomes.
Retatrutide	Metabolic & Weight	Triple-receptor (GLP-1 / GIP / glucagon) agonist in late-stage clinical trials.
CJC-1295	Growth Hormone Support	A growth hormone–releasing hormone analog studied for endogenous GH support.
Ipamorelin	Growth Hormone Support	Selective ghrelin-receptor agonist studied for clean GH pulses.
Sermorelin	Growth Hormone Support	GHRH (1-29) analog used in long-running clinical and research literature.
GHK-Cu	Skin, Hair & Aesthetic	Copper-binding tripeptide widely studied in skin and hair research.
NAD+	Longevity & Cellular	Foundational cellular coenzyme studied for energy metabolism and longevity.
Glutathione	Longevity & Cellular	The body's master intracellular antioxidant — extensively studied for cellular defense.
MOTS-c	Longevity & Cellular	Mitochondrial-encoded peptide studied for metabolic regulation and exercise mimicry.
Epitalon	Longevity & Cellular	Tetrapeptide studied for telomerase activity and circadian/pineal research.
PT-141	Libido & Wellbeing	Melanocortin-receptor agonist studied for sexual-response pathways.
MK-677	Growth Hormone Support	Orally-active small-molecule ghrelin-receptor agonist studied for sustained GH/IGF-1 elevation.
DSIP	Longevity & Cellular	Nonapeptide first isolated from cerebral venous blood — studied for delta-wave sleep and stress-response research.

Head-to-head comparisons

• Semaglutide vs Tirzepatide — Side-by-side comparison of the two leading incretin peptides: mechanism, half-life, head-to-head trial data, and how to think about them.
• BPC-157 vs TB-500 — The two most-cited peptides in recovery research. Comparing mechanism, target tissue, half-life, and why they are routinely stacked.
• CJC-1295 vs Ipamorelin — The canonical GHRH + GHRP pair — how each works alone, why they are almost always studied together, and what the no-DAC distinction means.
• Sermorelin vs CJC-1295 — Two GHRH analogs from different eras. Sermorelin is the original GHRH (1-29) fragment; CJC-1295 is the engineered, longer-acting evolution.
• Ipamorelin vs Ibutamoren (MK-677) — Ipamorelin vs ibutamoren (MK-677) side by side: mechanism, half-life, GH pulse pattern, oral vs injectable, and typical cycle length.
• Semaglutide vs Retatrutide — Single-receptor incretin vs the leading triple-receptor next-generation molecule. What the early phase-2 retatrutide data actually shows.
• Tirzepatide vs Retatrutide — Dual-receptor vs triple-receptor: how the leading approved incretin compares to the most-watched next-generation molecule, side by side.
• Semaglutide vs Mazdutide — Single-receptor GLP-1 vs dual GLP-1/glucagon: how the established incretin compares to Innovent's Asia-first next-generation candidate.
• Tirzepatide vs Mazdutide — The two leading dual-agonist incretins, one western (GIP+GLP-1), one Asia-first (GLP-1+glucagon). What their trials actually show.
• GHK-Cu vs BPC-157 — Both are 'repair' peptides — but they operate on completely different tissues and pathways. When each is used, and why they are complementary.
• Sermorelin vs Ipamorelin — GHRH analog vs GHRP: two ways to raise growth hormone, hitting two different receptors. Why the answer is almost always 'both'.
• NAD+ vs Glutathione — Two flagship 'wellness IV' molecules with completely different jobs — coenzyme energy metabolism vs master antioxidant detoxification.
• PT-141 vs Tadalafil — Central-nervous-system libido pathway vs peripheral vascular pathway. How they differ, why they are often studied together.

Important

All peptide products referenced are intended solely for research, investigational, or licensed professional use. They are not FDA-approved and are not intended to diagnose, treat, cure, or prevent any disease. Consult a licensed medical practitioner before any personal or clinical use.