If you've gone looking for information on research peptides, you've probably noticed who it's written for. The language is gym-coded, the framing assumes a performance goal, and the things you're actually researching (skin, aging, weight, hormonal health, hair, longevity) are either missing entirely or buried under content aimed at someone else.
This page is built around what you're actually searching for. Below are the peptides with substantial research interest in the areas that matter to you, each linking to research notes written with you as the reader, not an afterthought. The evidence behind these compounds varies a lot: some are FDA-approved pharmaceuticals with large trials behind them, others are studied mostly in cell cultures. You'll get a straight answer about which is which on every page.
Skin, Collagen, and Anti-Aging Research
These peptides appear most frequently in research on skin remodeling, collagen synthesis, and cellular aging. The evidence base is primarily in vitro and animal models, with cosmetic applications more studied than systemic ones.
Copper peptide with one of the largest in vitro evidence bases in skin research. Studies have examined its role in collagen synthesis, fibroblast activation, and gene expression patterns linked to aging. Serum levels decline significantly with age, from roughly 200 ng/ml at 20 to 80 ng/ml by 60.
A synthetic tetrapeptide studied in the context of telomere biology and cellular longevity. Research has examined its potential role in influencing telomerase activity and age-related tissue changes, primarily in animal models and some older human studies conducted in Russia.
Weight and Metabolic Health Research
GLP-1 receptor agonists are the most clinically advanced peptides in this category. Both have FDA-approved pharmaceutical forms available by prescription; the research notes on these pages cover the compound class as studied in published literature.
GLP-1 receptor agonist studied for weight management, metabolic health, and cardiovascular outcomes. The landmark STEP 1 trial demonstrated significant weight reduction; the SELECT trial showed cardiovascular risk reduction in people with obesity. Marketed as Ozempic (T2D) and Wegovy (obesity).
Dual GIP and GLP-1 receptor agonist with weight reduction outcomes in the SURMOUNT trial series that exceeded earlier GLP-1 agents. Marketed as Mounjaro (T2D) and Zepbound (obesity). The highest-volume weight research peptide currently in use.
Hormonal Health and Libido Research
PT-141 is the most clinically advanced peptide in this category with a women-specific FDA approval. It is the only research peptide approved specifically for a condition defined in women.
Melanocortin receptor agonist approved by the FDA in 2019 as Vyleesi specifically for hypoactive sexual desire disorder (HSDD) in premenopausal women. This is the only research peptide with a women-specific FDA indication. Existing content on PT-141 almost entirely ignores this context.
Gut Health, Healing, and Tissue Repair
BPC-157 has significant research interest across a broad audience. Its gut healing angle resonates particularly with researchers focused on gastrointestinal health, inflammation, and recovery.
Body protection compound studied for gut lining repair, tendon and ligament healing, and systemic anti-inflammatory effects. Frequently researched alongside TB-500. The gut health research angle is well-studied in animal models; human evidence is limited but growing.
Synthetic fragment of thymosin beta-4, studied for tissue repair, wound healing, and anti-inflammatory activity. Often researched alongside BPC-157 in tissue repair protocols. Most evidence is preclinical; ocular surface repair has the most advanced human data.
Cognitive and Mood Research
Selank and Semax are Russian-origin peptides with growing research interest in anxiety, cognitive function, and mood regulation. Interest among women researchers has grown alongside broader interest in nootropic peptides.
Synthetic analog of the endogenous peptide tuftsin, studied in Russian clinical research for anxiolytic (anxiety-reducing) and cognitive effects. Has been used in Russia as an approved pharmaceutical; Western research literature is more limited.
Enter any peptide, compare cost per mg across vendors, and find the best value for your research budget. Free, private, works with any vendor.