Richard Hayes
Editor-in-Chief, PeptideMark
Richard founded PeptideMark to create an independent, evidence-based peptide reference free from vendor influence. He oversees editorial standards, content strategy, and ensures every claim on the site is properly cited and evidence-rated. His work focuses on translating complex pharmacological research into accessible, well-sourced educational content.
20
Compound Profiles
16
Guides Published
39
Educational Articles
96
News & Analysis
Areas of Focus
Peptide pharmacologyEvidence-based health contentFDA & regulatory analysisClinical trial interpretationGLP-1 receptor agonistsGrowth hormone secretagoguesRegenerative peptide researchScientific publishing standardsWADA prohibited substances
Compound Profiles (20)
Evidence-rated compound profiles reviewed and approved by Richard.
BPC-157·healing recoverySemaglutide·weight lossTirzepatide·weight lossTB-500·healing recoveryCJC-1295·growth hormoneIpamorelin·growth hormoneGHK-Cu·skin hairPT-141·sexual healthSermorelin·growth hormoneTesamorelin·growth hormone
View all 20 compounds Guides (16)
- What Are Peptides? A Science-Based Introduction
- Peptides for Weight Loss: What the Research Shows
- FDA Regulation of Peptides: What You Need to Know
- Understanding Our Evidence Ratings
- Growth Hormone Secretagogues Explained
- GLP-1 Receptor Agonists: From Semaglutide to Retatrutide
- How to Reconstitute Peptides: Step-by-Step
- Peptide Storage & Handling Best Practices
- How to Read Peptide Research Papers
- Peptide Therapy: What You Need to Know Before Starting
- Peptides for Muscle Growth: What the Research Actually Shows
- Are Peptides Safe? What the Evidence Shows
- Peptide Injection Sites: Subcutaneous vs Intramuscular Guide
- Peptide Half-Life Reference: Dosing Frequency & Duration
- Peptide Needle & Syringe Guide: Gauge, Length, and Sizing
- Peptide Dosing Timing: When to Inject and Why It Matters
Educational Articles (39)
- Peptides for Injury Recovery: What Actually Works for Healing in 2026
- Growth Hormone Peptides: CJC-1295, Ipamorelin, MK-677 & Sermorelin Compared
- Peptide Cycling: When to Take Breaks, How Long to Run, and On/Off Protocols
- How to Find a Legitimate Peptide Compounding Pharmacy in 2026
- How to Inject Peptides: A Complete Beginner's Guide to Subcutaneous Injections
- BPC-157 Dosage Guide: Published Protocols, Timing, and What the Evidence Actually Shows
- Tirzepatide for Weight Loss: What the Clinical Trials Actually Show
- Peptides for Women: Safety, Benefits, and What’s Different
- Peptide Stacking: What the Research Actually Shows
- Oral vs Injectable Peptides: Bioavailability Guide
- Peptide Half-Lives Explained: Why Duration Matters
- Peptide Therapy Cost Guide 2026: What to Expect
- Peptides vs SARMs vs Steroids: Key Differences Explained
- The Complete History of the FDA Peptide Crackdown
- Compounding Pharmacy Regulation: What Changed and What It Means for Peptides
- The GLP-1 Market: How Semaglutide and Tirzepatide Created a $50B Industry
- Peptide Research Funding: Who Is Paying for Clinical Trials?
- WADA, Sports, and Peptides: The Complete Anti-Doping Guide
- Telehealth Peptide Prescriptions: How Online Clinics Are Changing Access
- Insurance Coverage for Peptide Therapy: A State-by-State Analysis
- How Peptides Are Manufactured: From Lab Synthesis to Clinical Grade
- International Peptide Regulation: US vs EU vs Australia vs Russia
- The Science of Peptide Stability: Storage, Reconstitution, and Degradation
- Are Peptides Safe? Side Effects, Risks & What the Evidence Shows
- Best Peptides for Muscle Growth & Recovery: What the Research Shows
- Best Peptides for Anti-Aging & Longevity: What the Evidence Actually Shows
- Peptides for Hair Growth & Hair Loss: What the Research Actually Shows
- Peptides for Gut Health & IBS: Evidence Review 2026
- Peptides for Sleep & Recovery: Clinical Evidence 2026
- Peptides for Cognitive Function & Brain Health: Evidence Review 2026
- Anti-Inflammatory Peptides: Evidence-Based Review 2026
- GHK-Cu: Why This Copper Peptide Is the Fastest-Growing Peptide Search of 2026
- How AI Is Revolutionizing Peptide Drug Discovery in 2026
- CagriSema Explained: Why Novo Nordisk Is Combining Semaglutide With Amylin
- How Long Do Peptides Take to Work? A Compound-by-Compound Timeline
- Are Injectable Peptides Safe for Anti-Aging? What the Evidence Actually Shows in 2026
- Do Peptides Build Muscle? What the Science Actually Says in 2026
- NAD+ and MOTS-c: What the Longevity Peptide Research Actually Shows in 2026
- GLP-1 Drugs and Addiction: Could Ozempic Treat Substance Use Disorders?
News & Analysis (96)
- PCAC July 23-24: FDA Recommends Against All 7 Peptides — What the Briefing Documents Reveal
- VK2735: The Oral Weight Loss Pill Showing 12% Loss in 13 Weeks
- Medicare GLP-1 Bridge Just Launched: $50/Month Wegovy and Zepbound — Who Qualifies
- Nature Asked If the Peptide Craze Is Backed by Science. Here's What the Evidence Actually Shows.
- Ozempic vs Mounjaro vs Retatrutide: Which Weight Loss Drug Wins in 2026?
- Natural Alternatives to Ozempic: Do Any Peptides or Supplements Actually Work?
- Stanford Discovers "Natural Ozempic" Peptide That Cuts Appetite 50% Without GI Side Effects
- New Study: Tirzepatide Causes More Muscle Loss Than Semaglutide in 8,000-Patient Analysis
- Semaglutide Fails Alzheimer's Trial: What the EVOKE Results Mean for GLP-1 Brain Claims
- MK-677 (Ibutamoren) Legal Status and FDA Approval in 2026: The Complete Picture
- FDA Sets July 23–24 Meeting to Review BPC-157, TB-500, and 5 More Peptides for Compounding Access
- RFK Jr. Announces 14 Peptides Moving Back to Category 1: What It Means
- Ozempic Side Effects: What 5 Years of Real-World Data Actually Shows
- Oral Wegovy Pill Gets FDA Approval: What You Need to Know
- Retatrutide Phase 3: Triple Agonist Delivers 71 lbs Average Weight Loss