Home → Blog
The Peptide Journal

The science of prescription wellness.

Evidence-based writing on peptides, GLP-1 medicines, prescription skincare, and the future of care delivered at home — from our editorial team of clinicians and science writers.

🧬
Peptides 101

Peptides 101: What They Are and Why Your Body Runs on Them

The building blocks behind hormones, healing, and metabolism — explained without the jargon.
Dr. Elena MarchettiJul 8, 2025
📜
Science & History

A Short History of Peptides: From Insulin to the Longevity Era

A century of discovery, from the first insulin injection to today's longevity research.
Marcus BellJul 17, 2025
✨
Skincare

The Skin Barrier, Explained: Why Peptides Belong in Your Routine

How your skin's outer layer works — and where peptides fit in.
Dr. Priya AnandJul 29, 2025
⚖️
GLP-1

GLP-1 Explained: How Semaglutide Actually Works

The hormone pathway behind the most talked-about class of medicine in a decade.
Dr. Elena MarchettiAug 6, 2025
✨
Skincare

Copper Peptides (GHK-Cu): The Skincare Ingredient Dermatologists Keep Talking About

What GHK-Cu is, what it does for skin, and what the evidence really shows.
Dr. Priya AnandAug 15, 2025
🏛️
Regulation

Compounded vs. Commercial: What a 503A Pharmacy Actually Does

Why compounding pharmacies exist, and how they're regulated.
Dr. Nathan ColeAug 26, 2025
⚖️
GLP-1

Semaglutide vs. Tirzepatide: A Head-to-Head for Metabolic Health

Two blockbuster molecules, one honest comparison of how they differ.
Dr. Elena MarchettiSep 4, 2025
🏋️
Performance

BPC-157 and the Science of Recovery Peptides

What we know — and don't yet know — about the popular recovery peptide.
Marcus BellSep 16, 2025
⚖️
GLP-1

Retatrutide: The 'Triple-G' Next-Generation GLP-1 to Watch

Why the next wave of metabolic medicine hits three receptors instead of one.
Dr. Elena MarchettiSep 25, 2025
✨
Skincare

Tretinoin, Decoded: The Gold Standard of Prescription Skincare

Decades of evidence behind dermatology's most trusted anti-aging molecule.
Dr. Priya AnandOct 3, 2025
🏛️
Regulation

How the FDA Regulates Peptides and Compounded Medications

Approved, compounded, or off-limits — how the rules actually work.
Dr. Nathan ColeOct 14, 2025
🏋️
Performance

The 'Wolverine Stack': What People Mean and What the Science Says

Cutting through the internet hype around the popular recovery combo.
Marcus BellOct 23, 2025
🏋️
Performance

Peptides for Sleep and Recovery: What the Evidence Shows

How recovery, sleep quality, and peptide research intersect.
Marcus BellNov 5, 2025
✨
Skincare

Melasma and Hyperpigmentation: A Prescription-First Approach

Why stubborn pigmentation often needs more than an over-the-counter serum.
Dr. Priya AnandNov 14, 2025
⚖️
GLP-1

GLP-1s Beyond Weight Loss: Metabolic, Cardiac, and Emerging Benefits

The expanding science of what GLP-1 medicines may do beyond the scale.
Dr. Elena MarchettiNov 25, 2025
🛡️
Safety

Understanding Peptide Safety: Sourcing, Dosing, and Why a Prescription Matters

The difference between a prescribed protocol and a gray-market gamble.
Dr. Nathan ColeDec 4, 2025
✨
Skincare

Collagen, Elastin, and Peptides: The Anti-Aging Trio

How skin structure changes with age — and what actually helps.
Dr. Priya AnandDec 12, 2025
⏳
Longevity

The Longevity Movement: Where Peptides Fit In

Separating the durable science from the wellness hype.
Marcus BellDec 22, 2025
⚖️
GLP-1

New Year, New Metabolism: Setting Realistic GLP-1 Expectations

What healthy, sustainable progress on GLP-1 therapy actually looks like.
Dr. Elena MarchettiJan 8, 2026
🏋️
Performance

Ipamorelin and Growth-Hormone Secretagogues, Explained

A clear look at how these peptides signal the body — and the open questions.
Marcus BellJan 19, 2026
🛡️
Safety

Why 'Research Peptides' Sold Online Are a Red Flag

'Not for human consumption' means exactly what it says.
Dr. Nathan ColeJan 28, 2026
🧭
How-To

The Telehealth Model: How Prescription Wellness Reaches Your Door

Intake to delivery — how modern prescription telehealth actually works.
Sofia ReyesFeb 5, 2026
✨
Skincare

The Rise of Injectable and Topical Skin Peptides

Two very different delivery routes, and what each can realistically do.
Dr. Priya AnandFeb 16, 2026
⚖️
GLP-1

Tirzepatide Deep Dive: The Dual-Agonist Advantage

Why hitting two receptors changed the metabolic-medicine conversation.
Dr. Elena MarchettiFeb 25, 2026
🏋️
Performance

Muscle Preservation on GLP-1s: The Protein-and-Training Playbook

How to protect lean mass while losing fat on metabolic therapy.
Marcus BellMar 6, 2026
🏛️
Regulation

FDA Approvals Timeline: The Drugs That Defined the GLP-1 Era

From exenatide to today — the milestones that built a category.
Dr. Nathan ColeMar 17, 2026
✨
Skincare

Niacinamide, Peptides, and Actives: Building a Dermatologist-Backed Routine

How to layer proven ingredients without overwhelming your skin.
Dr. Priya AnandMar 27, 2026
⚖️
GLP-1

Reta, Semaglutide, Tirzepatide: A Plain-English Comparison

Three generations of metabolic medicine, side by side.
Dr. Elena MarchettiApr 7, 2026
🏋️
Performance

Peptides for Joint and Tendon Health: Hype vs. Evidence

What the research supports, and where the marketing gets ahead of it.
Marcus BellApr 16, 2026
🏛️
Regulation

What 'Compounded GLP-1' Really Means After the Shortage

How the end of the shortage list reshaped access and compliance.
Dr. Nathan ColeApr 27, 2026
⏳
Longevity

The Gut-Skin Axis: Why Metabolic Health Shows on Your Face

The growing science connecting metabolism, inflammation, and skin.
Dr. Priya AnandMay 6, 2026
⚖️
GLP-1

Dosing, Titration, and Side Effects: A Patient's Guide to Starting GLP-1s

What to expect in the first weeks, and how titration protects you.
Dr. Elena MarchettiMay 15, 2026
🛡️
Safety

Peptide Myths, Busted: Separating Marketing From Medicine

The most common misconceptions, checked against the evidence.
Sofia ReyesMay 26, 2026
⏳
Longevity

Longevity Peptides: Epitalon, Thymosin, and the Research Frontier

A sober look at the peptides at the edge of longevity research.
Marcus BellJun 4, 2026
✨
Skincare

Prescription Skincare vs. the Beauty Aisle: What You're Really Paying For

Where prescription strength matters — and where it doesn't.
Dr. Priya AnandJun 15, 2026
⏳
Longevity

The Future of Personalized Medicine: Peptides, Data, and Care at Home

Where at-home diagnostics, data, and prescription care are heading.
Dr. Elena MarchettiJun 26, 2026