Peptide Research Blog
Evidence-based articles, stacking guides, industry news, and research deep dives — published weekly.
The Complete Guide to Peptide Stacks: How to Combine Peptides Safely
Peptide stacking combines two or more compounds to target complementary pathways. This guide covers the principles, the most popular stacks, and how to get started safely.
Peptides for Skin & Hair: GHK-Cu, Collagen & Anti-Aging Stacks
From GHK-Cu copper peptide to collagen-boosting stacks, peptides offer research-backed options for skin rejuvenation and hair restoration. This guide covers the top compounds, protocols, and how to combine them.
Selank vs Semax: Which Nootropic Peptide Is Better for You?
Selank and Semax are Russian-developed nootropic peptides with distinct mechanisms. This head-to-head comparison covers their differences in benefits, dosing, side effects, and who should use which.
OS-01 Peptide: Anti-Aging Eye Drops That Reverse Biological Age
OS-01 is a mitochondria-targeted antioxidant peptide delivered as eye drops that showed epigenetic age reversal in human eyes. This article reviews the research, mechanism, and what it means for longevity science.
DSIP for Sleep: Delta Sleep-Inducing Peptide Dosage & Protocol
DSIP is a nonapeptide studied for its ability to modulate sleep architecture and promote delta wave sleep. This guide covers dosing protocols, timing, cycle length, side effects, and stacking options.
Melanotan II Complete Guide: Dosage, Tanning Results & Safety
Melanotan II is a synthetic alpha-MSH analog studied for its melanogenesis effects. This guide covers dosing protocols, expected results, side effects, safety concerns, and how it compares to Melanotan I.
What Is Pinealon? Nootropic Peptide Benefits, Dosage & Safety
Pinealon is a short regulatory tripeptide studied for neuroprotection, sleep quality, and cognitive function. This guide covers its mechanism, dosing protocols, benefits, side effects, and what the research shows.
Mazdutide: China's GLP-1 Weight Loss Drug — What We Know
Mazdutide is Innovent Biologics' GLP-1/glucagon dual agonist developed in China. With GLORY trial data showing competitive weight loss results, this article covers what we know about the drug and its global implications.
Survodutide: GLP-1/Glucagon Dual Agonist — Results & Dosage
Survodutide is a dual GLP-1/glucagon receptor agonist that takes a different approach than tirzepatide. This guide covers the SYNCHRONIZE trials, dosing, side effects, and where survodutide fits in the evolving weight loss landscape.
Peptide Side Effects: A Complete Safety Guide by Compound
Every peptide carries a unique side effect profile. This guide organizes adverse effects by compound category and includes a master reference table covering 20+ peptides.
Are Peptides Safe? What 50+ Clinical Studies Actually Show
Are peptides safe? The answer depends on the compound, the source, and the user. This article reviews 50+ clinical studies to separate evidence from hype across every major peptide category.
Tesofensine for Weight Loss: Dosage, Results & Side Effects
Tesofensine is a triple monoamine reuptake inhibitor that produced striking weight loss in phase 2 trials. This article examines the evidence, dosing, side effects, and how it compares to GLP-1 receptor agonists.
KPV Peptide: Anti-Inflammatory Benefits & Gut Healing Research
KPV is a tripeptide fragment of alpha-MSH with potent anti-inflammatory activity. This guide covers the NF-kB mechanism, gut healing studies, dosing protocols, and how it compares to BPC-157.
Peptide Dosage Chart 2026: Every Compound in One Reference Table
One chart, every major peptide, every standard dose. This 2026 reference table covers 25+ compounds with dosing ranges, frequency, route, cycle length, and practical notes.
GLP-3 Receptor Agonists: What Is Retatrutide & How Does It Work?
Searches for GLP-3 peptides often lead to retatrutide, but the truth is more nuanced. This article explains what GLP-3 actually refers to, why retatrutide is really a GLP-1/GIP/glucagon triple agonist, and what the clinical data shows.
How to Store Peptides: Refrigeration, Freezing & Shelf Life
Improper storage is the number-one reason peptides lose potency. This guide covers lyophilized storage, reconstituted shelf life, travel protocols, and how to spot degradation.
Peptide Injection Sites: Complete Body Map & Best Practices
Choosing the right injection site affects absorption, comfort, and consistency. This body-map guide covers every major site, compares SubQ vs IM routes, and provides a rotation schedule.
AOD-9604 vs Semaglutide: Which Fat Loss Peptide Is Right for You?
AOD-9604 and semaglutide represent two fundamentally different approaches to fat loss. This article compares their mechanisms, clinical evidence, dosing, cost, and side effect profiles to help you understand which may be the better fit.
Peptide Cycle Length Guide: How Long Should You Run Each Compound?
Peptide cycle length varies dramatically by compound — from 4-week healing cycles to indefinite GLP-1 therapy. This guide covers recommended durations, on/off protocols, and the reasoning behind each.
Subcutaneous vs Intramuscular Injection: When to Use Each for Peptides
Subcutaneous and intramuscular injections deliver peptides differently. This guide explains when to use each route, how absorption differs, and which peptides are best suited to each method.
BPC-157 + TB-500 Stack: The Complete Healing Protocol
BPC-157 and TB-500 are the most commonly stacked healing peptides. This guide provides the complete protocol — dosing, timing, cycle length, and what the research says about combining them.
Is BPC-157 Legal? FDA Status, Category 2 & What It Means in 2026
BPC-157's legal status shifted in 2025 when the FDA placed it on the Category 2 bulk drug substances list. This article explains what that means for compounding, research, and access.
Bacteriostatic Water vs Sterile Water: Which to Use for Peptides
Choosing the wrong diluent can destroy your peptide or create a contamination risk. This guide explains the critical differences between bacteriostatic water and sterile water and when to use each.
Peptide Dosing by Body Weight: The Complete Calculation Guide
Should peptide doses scale with body weight? This guide explains when weight-based dosing matters, how to calculate mcg/kg doses, and which peptides use flat dosing vs weight-scaled protocols.
Peptide Compounding Pharmacy Ban: What It Means for Consumers
FDA enforcement against peptide compounding pharmacies intensified in 2025-2026. This article explains what happened, which compounds are affected, and what options remain for consumers.
Cerebrolysin: Nootropic Peptide Research Review
Cerebrolysin is a multi-peptide nootropic preparation derived from porcine brain tissue, approved in over 40 countries for neurological conditions. This article reviews what the clinical evidence actually shows.
BPC-157 for Gut Healing: What 47 Studies Show
BPC-157 was originally discovered in human gastric juice and most of its research involves the gastrointestinal tract. This article reviews what 47 published studies reveal about its gut-healing potential.
Survodutide vs Tirzepatide: The Next-Gen GLP-1 Comparison
Survodutide and tirzepatide represent two different dual-agonist strategies for weight loss. This article compares their mechanisms, trial results, and what the data suggests about their relative strengths.
BPC-157 Dosage Guide: Oral vs Injectable, Loading vs Maintenance
BPC-157 dosing is one of the most frequently asked questions in the peptide community. This guide covers the research on oral vs injectable delivery, loading protocols, maintenance dosing, and practical calculation methods.
Oral Semaglutide vs Injectable: Cost, Dosage & Effectiveness Compared
With oral Wegovy now approved, the question is no longer whether oral semaglutide works but how it compares to the injectable. This article breaks down the clinical data, cost, and practical differences.
FDA Peptide Regulations 2026: What Changed and What's Coming
The FDA's peptide regulatory landscape shifted dramatically in 2025-2026. From the compounding crackdown to new bulk drug substance categories, here is what changed and what comes next.
Ipamorelin: The Safest Growth Hormone Secretagogue?
Ipamorelin is often called the safest growth hormone secretagogue due to its selective mechanism. This article examines the clinical evidence behind that claim, its dosing protocols, and how it compares to alternatives.
IGF-1 LR3: Muscle Growth Peptide Complete Guide
IGF-1 LR3 is a modified insulin-like growth factor with a dramatically extended half-life. This guide examines the research behind its anabolic properties, dosing protocols, and safety profile.
Hexarelin: Growth Hormone Release, Dosage & Side Effects
Hexarelin is one of the most potent growth hormone secretagogues ever studied. This guide covers its mechanism, dosing protocols, cardioprotective research, and how it compares to other GH peptides.
Compounded Semaglutide vs Brand Name: Is It Safe? What to Know in 2026
Compounded semaglutide surged in popularity during the Ozempic shortage. With supply stabilizing and FDA scrutiny increasing, here is what you need to know about compounded vs brand-name GLP-1 medications in 2026.
AOD-9604 for Fat Loss: Does the Research Actually Support It?
AOD-9604 is marketed as a fat-loss peptide derived from growth hormone. But does the published research actually support its use? This article examines the evidence critically.
Retatrutide Phase 3 Results: What We Know So Far (2026)
Retatrutide is the first GLP-1/GIP/glucagon triple agonist in late-stage clinical trials. Phase 2 data showed unprecedented weight loss. Here is what we know about the phase 3 program and what to expect next.
Semaglutide vs Tirzepatide: Which GLP-1 Is Better for Weight Loss?
Semaglutide and tirzepatide are the two leading GLP-1 medications for weight management. This article compares their clinical trial results, mechanisms, side effect profiles, and practical considerations.
How to Reconstitute and Inject Peptides: The Complete Beginner's Guide
Reconstituting and injecting peptides can seem intimidating at first, but the process is straightforward once you understand the basics. This hands-on guide walks through every step from opening the vial to proper storage.
Retatrutide: The Triple Agonist That Could Redefine Weight Loss
Retatrutide is the first triple agonist targeting GLP-1, GIP, and glucagon receptors simultaneously. Phase 2 trials showed up to 24 percent body weight loss, surpassing every other obesity medication tested to date. Here is what the research reveals.
GHK-Cu Copper Peptide: A Comprehensive Review of the Research
GHK-Cu is one of the most studied peptides in skin science and regenerative medicine. From Loren Pickart's original discovery to modern gene expression studies, this article covers what the research actually shows about this copper-binding tripeptide.
CJC-1295 + Ipamorelin Stack: The Science Behind the Gold-Standard GH Protocol
CJC-1295 and Ipamorelin target two distinct pathways to amplify natural growth hormone release. This article examines the published research behind the combination, how synergy works at the receptor level, and what the evidence says about dosing and timing.
Oral Wegovy Is Here: What You Need to Know About Oral GLP-1 Peptides in 2026
The FDA approved oral Wegovy in January 2026, making injectable-free GLP-1 therapy a reality. Here is everything the research says about oral semaglutide and what comes next.
BPC-157 + TB-500: The Research Behind the Most Popular Healing Stack
BPC-157 and TB-500 are the most commonly stacked healing peptides. This article examines what the published research actually shows about each compound and their combination.
Peptides vs SARMs vs Steroids: Understanding the Differences
Many newcomers confuse peptides with SARMs and steroids. This guide breaks down the fundamental differences in how they work, their legal status, and their safety profiles.