Peptide Guides
In-depth, research-backed articles on peptides, dosing, safety, and more.
Foundayo's Oral GLP-1: Supplement Marketing vs. Real GLP-1 Science
An honest look at Foundayo's Oral GLP-1 supplement, what it actually contains, how it compares to prescription GLP-1 receptor agonists like retatrutide, and why the branding is misleading.
Reducing Systemic Inflammation: A Peptide-Based Approach
How peptides like BPC-157, KPV, thymosin alpha-1, and LL-37 target systemic inflammation at the molecular level. Evidence-based protocols, mechanisms, and practical guidance.
Peptides for Immune Support: Thymosin Alpha-1, LL-37, Selank, and More
An evidence-based guide to immune-modulating peptides including Thymosin Alpha-1, LL-37, Selank, and TB4. Mechanisms, dosing, stacking, and research-backed protocols.
Are Peptides Legal? FDA Regulations, the RFK Factor, and What It All Means in 2026
A comprehensive guide to peptide legality, FDA regulations, and the impact of RFK Jr.'s policy changes on compounded peptides in 2026.
Peptides and Fasting: How to Combine Them for Maximum Results
How intermittent fasting and peptides may fit together for fat loss, autophagy signals, and recovery. Timing ideas, fasted vs fed peptides, safety, and FAQs.
Tesamorelin + Ipamorelin Stack: Dual-Pathway GH Guide
Research-backed guide to the tesamorelin + ipamorelin stack: dual-pathway GH signaling, clinical evidence, dosing themes, side effects, and regulatory context.
Selank and Semax: Russian Nootropic Peptides Explained
A complete guide to Selank and Semax, two nootropic peptides developed in Russia for anxiety, cognition, and neuroprotection. Mechanisms, dosing, stacking, and safety.
The Longevity Stack: Epithalon + NMN + Thymosin Alpha-1 for Cellular Renewal
A science-backed protocol combining telomere support, NAD+ boosting, and immune restoration for multi-pathway anti-aging benefits. Mechanisms, dosing, synergy, and safety explained.
The Metabolic Stack: Tesamorelin + 5-Amino-1MQ + AOD-9604 for Fat Loss
A research-focused breakdown of combining tesamorelin, 5-amino-1MQ, and AOD-9604 for body recomposition. Mechanisms, dosing structure, timeline expectations, safety monitoring, and practical guidance.
The Skin Rejuvenation Stack: GHK-Cu, BPC-157, and Epithalon
A skin-focused peptide stack combining GHK-Cu for collagen, BPC-157 for vascular repair, and Epithalon for telomere maintenance. Mechanisms, dosing protocols, evidence gaps, and regulatory status.
The KLOW Stack: BPC-157, TB-500, GHK-Cu and KPV for Complete Tissue Repair
The KLOW peptide stack combines four compounds - BPC-157, TB-500, GHK-Cu, and KPV - to address distinct healing and anti-inflammatory pathways. Mechanisms, dosing protocols, synergy, timelines, and safety explained.
Best Peptides for Fat Loss: The 2026 Guide
The most effective peptides for fat loss in 2026 including retatrutide, tirzepatide, semaglutide, AOD-9604, and tesamorelin. Evidence-based comparison with dosing protocols.
Best Peptides for Hair Growth: GHK-Cu, Thymosin Beta-4, and More
A research-focused guide to peptides people use for hair growth - GHK-Cu and thymosin beta-4 (TB-500), plus topical protocols, stacking, and safety notes.
The Best Peptides for Joint Health: What the Research Actually Shows
An evidence-based review of the top peptides for joint repair and inflammation: BPC-157, TB-500, AOD-9604, and GHK-Cu, with protocols and dosing guidance.
The Cognition Stack: Semax + Selank + Dihexa: Mechanisms, Evidence, and Practical Protocols
A deep dive into the Semax, Selank, and Dihexa peptide stack for cognitive enhancement, examining their individual mechanisms, human and animal evidence, and theoretical synergistic effects.
Advanced Fat Burning Stack: Retatrutide + 5-Amino-1MQ + Cardarine
A deep look at the research stack combining Retatrutide's triple-receptor appetite control, 5-Amino-1MQ's fat cell reprogramming, and Cardarine's PPAR-delta fat oxidation for advanced metabolic studies.
Best Peptides for Muscle Growth: Evidence-Based Guide (2026)
An evidence-based guide to the best peptides for muscle growth, detailing their mechanisms, efficacy, side effects, and legal status.
Peptides and Testosterone: How to Combine Peptides with TRT
Learn how peptides work with testosterone replacement therapy for enhanced results. GH peptides, kisspeptin, and protocols for men optimizing hormones.
Retatrutide vs Semaglutide: Triple Agonist Head-to-Head Comparison
Retatrutide posted 24% weight loss in Phase 2, nearly 60% more than semaglutide. Clinical trial data, side effects, liver fat reduction, and practical guidance compared head to head.
The Wolverine Stack: BPC-157 and TB-500 for Accelerated Healing
The Wolverine Stack combines BPC-157 and TB-500 to target complementary healing pathways - angiogenesis and structural repair. Mechanisms, dosing protocols, recovery timelines, and safety explained.
Best Peptides for Gut Health: BPC-157, KPV, and LL-37 for Digestive Repair
The best peptides for gut health including BPC-157, KPV, and LL-37. Learn how these peptides repair leaky gut, reduce IBS symptoms, and restore digestive function.
Best Peptides for Skin and Hair: The 2026 Evidence-Based Guide
Scientific breakdown of the most effective peptides for skin rejuvenation and hair growth, including GHK-Cu, Matrixyl, BPC-157, and practical routines.
CJC-1295, Ipamorelin & BPC-157: The Performance & Recovery Stack, PeptideRundown
A detailed comparison of peptides, SARMs, and anabolic steroids: mechanisms, risks, legality, and practical differences.
Semaglutide vs Tirzepatide: The Ultimate Comparison
Head-to-head comparison of semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) for weight loss and diabetes. Mechanisms, clinical data, side effects, costs, and which to choose.
BPC-157 vs TB-500: Which Healing Peptide Is Right for You?
A comprehensive guide comparing BPC-157 and TB-500, two popular healing peptides, to help you choose the right one for different injury types and understand their unique mechanisms of action.
Microdosing Peptides for Longevity: The Complete Guide
Your complete guide to microdosing peptides for longevity and anti-aging. Learn about Epithalon, MOTS-c, SS-31, BPC-157, GHK-Cu, and NAD+ protocols for optimal healthspan.
Best Peptides for Sleep: Natural Options for Better Rest
Explore peptides like DSIP, CJC-1295, Ipamorelin, and Selank for improved sleep quality and overnight recovery. Mechanisms, protocols, and safety explained.
BPC-157 vs GHK-Cu: Which Healing Peptide Fits Your Goal?
Head-to-head comparison of BPC-157 and GHK-Cu for tissue repair, gut health, skin regeneration, and joint recovery. Mechanisms, dosing, safety, and how to choose based on your goals.
Ipamorelin vs Sermorelin: Comparing Growth Hormone Secretagogues
Ipamorelin and sermorelin both stimulate natural growth hormone release, but through entirely different receptor pathways. Mechanisms, dosing, side effects, research findings, and which one fits your goals.
Peptides for Brain Injury and TBI Recovery: A Complete Guide
Complete guide to therapeutic peptides that support brain injury recovery, including BPC-157, Cerebrolysin, Dihexa, and others for TBI rehabilitation.
Anti-Aging Peptides: Best Peptides for Longevity
The best anti-aging and longevity peptides compared: Epithalon, GHK-Cu, BPC-157, Thymosin Alpha-1, CJC-1295/ipamorelin, and NAD+. Mechanisms, evidence, stacking, and costs.
How to Make Your Own GHK-Cu Copper Peptide Cream at Home
Step-by-step guide to making your own topical GHK-Cu copper peptide cream at home. Save money and get clinical-grade results with this DIY recipe.
CJC-1295 vs Sermorelin: Comparing Growth Hormone Peptides
CJC-1295 and Sermorelin both stimulate natural growth hormone release, but differ in half-life, dosing frequency, cost, and physiological effects. A side-by-side breakdown.
Peptides for Immune Health: Thymosin Alpha-1, LL-37, and Selank, Complete Guide
A detailed comparison of peptides, SARMs, and anabolic steroids: mechanisms, risks, legality, and practical differences.
Melanotan 2: Tanning Peptide Benefits, Risks, and Dosing
An honest guide to Melanotan 2 (MT-2), also known as the 'Barbie peptide' or 'Barbie drug.' How it works, dosing protocols, side effects, safety concerns including melanoma risk, and legal status.
Peptides for Athletes: Recovery, Performance, and What to Watch For
A research-focused guide to peptides athletes discuss for recovery and performance. BPC-157, TB-500, GH secretagogues, and practical risk management.
Peptides for Women: Complete Guide to Female-Specific Protocols
Evidence-based guide to peptides for women's health, covering fertility, skin rejuvenation, fat loss, and hormone balance with protocols optimized for female physiology.
Retatrutide vs Tirzepatide: Triple vs Dual Agonist Comparison
Head-to-head comparison of retatrutide and tirzepatide for weight loss. Mechanisms, clinical trial data, side effects, dosing, and practical considerations explained clearly.
LL-37: The Antimicrobial Peptide Your Body Makes on Its Own
Complete guide to LL-37 (Cathelicidin), covering antimicrobial mechanisms, wound healing, the vitamin D connection, dosing research, safety, and clinical trial status.
Dihexa: The Nootropic Peptide 10 Million Times Stronger Than BDNF
A complete guide to Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide), the angiotensin IV analog studied for cognitive enhancement via the HGF/c-Met pathway.
GHK-Cu: The Science-Backed Guide for Skin and Hair Renewal
Explore how GHK-Cu copper peptide works for skin rejuvenation and hair growth. Evidence-based usage guide with practical application tips.
Ipamorelin: The Selective Growth Hormone Secretagogue
Complete guide to ipamorelin, a selective ghrelin receptor agonist that boosts growth hormone without unwanted side effects. Mechanism, dosing, research, and comparisons.
Peptides vs. SARMs vs. Steroids: What's Actually Different — A No-BS Comparison
A clear, no-hype breakdown of how peptides, SARMs, and anabolic steroids differ in structure, mechanism, risks, legality, and real-world use cases.
CJC-1295 with DAC: Benefits, Risks and Evidence Review
CJC-1295 with DAC explained: what the Drug Affinity Complex does, its 6-8 day half-life, research-backed benefits, side effects, and how it compares to CJC-1295 without DAC and ipamorelin.
Survodutide: Complete Guide to the Dual GLP-1/Glucagon Agonist
Survodutide is a next-generation dual GLP-1/glucagon receptor agonist for weight loss and metabolic health. Mechanisms, clinical trials, dosing, and safety explained.
MK-677 (Ibutamoren): Oral Growth Hormone Secretagogue Guide
Evidence-based MK-677 (ibutamoren) guide covering mechanism, human data, insulin-resistance risk, typical dosing patterns, cycling ideas, and key safety considerations.
Tirzepatide: The Dual-Action GLP-1/GIP Agonist Behind Mounjaro and Zepbound
A complete guide to tirzepatide covering mechanism, weight loss data, dosing, side effects, semaglutide comparison, FDA status, and FAQs.
Selank: The Anxiolytic Peptide That Sharpens Your Mind
Selank is a synthetic tuftsin-derived peptide with powerful anxiolytic and nootropic effects. Mechanisms, dosing, clinical research, and safety explained.
NAD+ and Peptides: Boosting Cellular Energy for Longevity
How NAD+ peptides like MOTS-c, 5-Amino-1MQ, and SS-31 support cellular energy production and combat age-related decline. Protocols, research, and safety explained.
AOD-9604: The Fat Loss Fragment of Growth Hormone
A complete guide to AOD-9604, the modified HGH fragment 176-191 peptide researched for fat loss without growth hormone side effects. Dosing, studies, and legal status.
Hexarelin: The Complete Guide
Hexarelin is the most potent growth hormone releasing peptide ever developed, with unique cardioprotective effects through CD36 receptors. Complete guide to mechanisms, dosing, and evidence.
IGF-1 LR3: Complete Guide to the Engineered Growth Factor
IGF-1 LR3 is a modified insulin-like growth factor with a 20-30 hour half-life. Mechanisms, dosing, muscle growth effects, fat loss, recovery, side effects, and safety explained.
MOTS-c: The Mitochondrial Peptide for Metabolism and Longevity
Everything you need to know about MOTS-c, the mitochondrial-derived peptide being studied for metabolism, exercise mimetic effects, and longevity.
Tesamorelin: The FDA-Approved Growth Hormone Peptide: Complete Guide
A science-backed guide to tesamorelin (Egrifta): mechanism as a GHRH analog, clinical trial evidence for visceral fat reduction, dosing, side effects, contraindications, and legal status.
FOXO4-DRI: The Senolytic Peptide Guide
A complete guide to FOXO4-DRI, the peptide targeting senescent cells. Mechanism, research, dosing, and how it compares to other senolytics.
Sermorelin: A Complete Guide to Growth Hormone Support
Sermorelin stimulates natural growth hormone production through the GHRH receptor pathway. Dosing, mechanisms, side effects, comparisons, and clinical evidence explained.
Semaglutide for Weight Loss: An Evidence-Based Guide
Everything you need to know about semaglutide (Ozempic, Wegovy, Rybelsus) for weight loss: mechanisms, clinical trial data, dosing, side effects, costs, and who qualifies.
DSIP: Understanding the Sleep-Regulating Peptide
Complete guide to delta sleep-inducing peptide (DSIP). What it is, how it may affect sleep architecture and stress signals, dosing themes, safety, and FAQs.
Follistatin 344: Guide to Myostatin Inhibition and Muscle Growth
Follistatin 344 binds myostatin to reduce muscle growth limits. Mechanisms, research evidence, isoform differences, dosing context, and safety monitoring explained.
KPV Peptide: The Anti-Inflammatory Peptide for Gut Health
A guide to KPV peptide, the alpha-MSH fragment showing promise for gut inflammation, IBD, colitis, and skin health.
Kisspeptin: The Reproductive Peptide Guide
A complete guide to kisspeptin, the peptide that regulates GnRH and plays a key role in puberty, fertility, and testosterone production. Mechanism, research, dosing, and clinical applications.
Thymosin Beta-4 (TB-4): The Complete Guide
A detailed guide to Thymosin Beta-4 (TB-4), its mechanisms, benefits for wound healing, cardiac repair, hair growth, dosing, and how it compares to TB-500.
Methylene Blue: The Mitochondrial Enhancer (Not Just a Dye)
A complete guide to methylene blue for cognitive enhancement, mitochondrial support, and anti-aging. Covers mechanism, dosing, safety, drug interactions, and FAQs.
Retatrutide: The Triple-Action GLP-1 That's Revolutionizing Weight Loss
Your complete guide to retatrutide, the breakthrough triple agonist targeting GLP-1, GIP, and glucagon receptors. Clinical trial results, mechanism of action, and what 28.7% weight loss means for obesity treatment.
Cerebrolysin: The Neuropeptide Complex for Brain Recovery
A guide to Cerebrolysin, the porcine brain-derived neuropeptide complex used for stroke, TBI, and Alzheimer's recovery. Mechanism, research, dosing, side effects, and availability.
GHK-Cu: The Copper Peptide for Skin, Hair, and Healing
A complete guide to GHK-Cu, the naturally occurring copper peptide with proven benefits for skin rejuvenation, hair growth, wound healing, and anti-aging. Mechanisms, dosing, and research.
Thymosin Alpha-1: The Immune-Boosting Peptide Approved in 35+ Countries
A complete guide to thymosin alpha-1 (Zadaxin), the immune-modulating peptide used for hepatitis, cancer support, and infections. Mechanism, dosing, research, and legal status.
BPC-157: A Complete Evidence-Based Guide
A science-backed guide to BPC-157 (Body Protection Compound-157) covering mechanisms of action, research-backed benefits, dosage protocols, reconstitution, side effects, and legal status.
Peptide Side Effects: What to Know Before You Start
Common peptide side effects explained: injection reactions, water retention, appetite changes, glucose issues, blood pressure shifts, and when to stop and talk to a clinician.
Peptide Vendor Red Flags: How to Spot Fake or Low-Quality Peptides
A systematic guide to identifying fake, contaminated, or mislabeled peptides. COA verification, third-party testing, vendor vetting, and the 10-minute evaluation workflow.
PT-141 (Bremelanotide): The FDA-Approved Peptide That Targets Desire
Complete guide to PT-141 bremelanotide, the FDA-approved melanocortin receptor agonist for sexual dysfunction. Mechanism, clinical trials, dosing, side effects, and comparisons to Viagra and Cialis.
TB-500 (Thymosin Beta-4, TB-4): Complete Peptide Guide
TB-500 vs thymosin beta-4 (TB-4): what each is, how they differ, and what research shows on tissue repair, plus dosing, safety, storage, and how TB-500 compares to BPC-157.
What Are Peptides? A Beginner's Guide to Peptide Therapy
Complete guide explaining what peptides are, how they work in your body, and why they're the fastest-growing category in pharmaceutical development.
Epithalon: The Telomerase-Activating Peptide Behind 30 Years of Anti-Aging Research
A complete guide to Epithalon (Epitalon), the synthetic tetrapeptide that activates telomerase. Research, dosing protocols, cycling, side effects, and legal status.
How to Reconstitute Peptides: Best Solution and Steps
How to reconstitute peptides, step by step: why bacteriostatic water is the best solution for most vials, when sterile water or acetic acid applies, dose math, and storage.
How to Store Peptides: Lyophilized and Reconstituted
How to store peptides before and after reconstitution. Temperature, light, bacteriostatic water vs sterile water, shelf life expectations, and travel tips.
SS-31 (Elamipretide): The Mitochondrial Peptide Targeting Cellular Energy
A complete guide to SS-31 (elamipretide), the cardiolipin-targeting peptide studied for Barth syndrome, heart failure, and mitochondrial aging.
Peptide Delivery Forms: Injectable vs Nasal vs Oral vs Topical
A practical guide to peptide delivery forms covering how injectable, nasal, oral, and topical peptides differ in absorption, stability, and real-world tradeoffs.
Semax: Complete Guide to the Nootropic Neuropeptide
Semax is a synthetic ACTH-derived peptide with powerful nootropic and neuroprotective effects. Mechanisms, variants, dosing, clinical research, and safety explained without the hype.
Complete Guide to Peptide Stacking: How to Combine Peptides for Better Results
Learn how to safely stack peptides for enhanced results. Popular combinations, timing strategies, dose adjustments, and compatibility matrices for every goal.
Are Peptides Legal? FDA Regulations Explained (2026)
Plain-English overview of peptide legality in the US: FDA rules, research-only language, compounding vs supplements, import risk, and what has changed in 2026.
How to Read a Peptide Certificate of Analysis (COA)
Learn to decode every section of a peptide COA to verify identity, purity, and content. Essential guide for quality control in peptide research.
Peptide Bloodwork Guide: Essential Labs Before and During Peptide Use
A practical guide to bloodwork for peptide users. Baseline labs, peptide-specific add-ons, timing, red flags, and how to track changes safely.
Peptide Myths Debunked: What Peptides Can and Can't Do
Peptides are often marketed with big promises. This myth-busting guide explains common misconceptions, how to evaluate claims, and safer ways to approach research compounds.
How to Travel with Peptides: TSA Rules, Storage Tips, and Packing Guide
A practical guide to traveling with peptides covering TSA rules, international customs, cold chain storage, packing tips, and what documentation to carry.
Peptide Cycling Guide: When to Cycle, When to Stay On, and How to Do It Right
A practical guide to peptide cycling with recommended on/off schedules by category, sample protocols, and signs you need a break.
Peptide Dosing Calculator: Reconstitution Math Made Simple
Learn how to calculate peptide doses, reconstitution volumes, and read insulin syringes. Step-by-step math with worked examples for BPC-157, semaglutide, ipamorelin, and more.
How to Inject Peptides Subcutaneously: A First-Timer's Guide
Step-by-step subcutaneous injection guide for peptides covering supplies, site selection, technique, dosing hygiene, pain minimization, and safe sharps disposal.