Research Reference

Peptide Comparisons

Side-by-side comparisons of the most-researched peptides and incretin therapies. Each page is structured the same way: mechanism, FDA status, dosing, half-life, trial program, and research applications. Citations are restricted to peer-reviewed primary literature.

GLP-1 / GLP-3

Semaglutide vs Tirzepatide

GLP-1 mono-agonist vs dual GIP/GLP-1 agonist

GLP-1 / GLP-3

Semaglutide vs Retatrutide

Single-receptor vs triple-receptor agonism

GLP-1 / GLP-3

Tirzepatide vs Retatrutide

Dual agonist vs triple agonist

GLP-1 / GLP-3

Semaglutide vs Liraglutide

Weekly vs daily GLP-1 receptor agonists

GLP-1 / GLP-3

Tirzepatide vs Cagrilintide

Incretin pathway vs amylin pathway

GLP-1 / GLP-3

Retatrutide vs Cagrilintide

Triple incretin agonist vs long-acting amylin analog

GLP-1 / GLP-3

Orforglipron vs Semaglutide

Oral non-peptide vs injectable peptide GLP-1 RA

Healing Peptides

BPC-157 vs TB-500 (Thymosin Beta-4 fragment)

Two of the most studied healing-research peptides

Healing Peptides

BPC-157 vs GHK-Cu

Systemic healing peptide vs copper-binding tripeptide

Healing Peptides

TB-500 (Thymosin Beta-4 fragment) vs GHK-Cu

Thymosin beta-4 fragment vs copper peptide

Healing Peptides

BPC-157 vs Glutathione

Repair-signaling peptide vs antioxidant tripeptide

Growth Hormone Axis

CJC-1295 vs Sermorelin

Long-acting vs short-acting GHRH analog

Growth Hormone Axis

CJC-1295 vs Ipamorelin

GHRH analog vs ghrelin-receptor agonist

Growth Hormone Axis

MK-677 (Ibutamoren) vs CJC-1295

Oral ghrelin mimetic vs injectable GHRH analog

Growth Hormone Axis

GHRP-2 vs GHRP-6

Two ghrelin mimetics with distinct appetite profiles

Growth Hormone Axis

Tesamorelin vs CJC-1295

FDA-approved GHRH(1-44) vs research GHRH(1-29) with DAC

Growth Hormone Axis

Hexarelin vs GHRP-6

Cardioprotective ghrelin mimetic vs appetite-driving counterpart

Longevity / NAD+

NAD+ vs NMN (Nicotinamide Mononucleotide)

Direct coenzyme administration vs precursor strategy

Longevity / NAD+

NMN (Nicotinamide Mononucleotide) vs NR (Nicotinamide Riboside)

Two oral NAD+ precursors with different metabolic routing

Longevity / NAD+

Epitalon vs NAD+

Pineal tetrapeptide vs mitochondrial coenzyme

Cognitive / Nootropic

Selank vs Semax

Anxiolytic-leaning vs cognition-leaning Russian nootropic peptides

Cognitive / Nootropic

Semax vs Cerebrolysin

Defined heptapeptide vs porcine-brain neurotrophic mixture

Sexual Wellness

PT-141 (Bremelanotide) vs Melanotan II

MC3/MC4-preferring agonist vs non-selective melanocortin agonist

Class Overview

Semaglutide vs Retatrutide

How single-pathway and triple-pathway incretin therapies differ

Class Overview

Semaglutide vs Liraglutide

How GLP-class peptides reframe pharmacologic weight management

For Research Use Only. All comparisons are provided for educational and research purposes only. Investigational compounds discussed are not FDA-approved for therapeutic indications.