Articles

Peptides

Semaglutide → Tirzepatide → Retatrutide: The Weight Loss Drug Evolution Explained

Three drugs. Three generations. A 14-percentage-point gap in weight loss between the first and third. Here is what changed at the molecular level, what Phase 3 shows — and what it means in practice.

WellSourced Editorial· April 15, 2026· 24 min read

Peptides

Peptides for Brain Fog: Why It's Not a Focus Problem, It's an Inflammation Problem

Brain fog isn't a focus problem. It's inflammation, gut-brain axis dysfunction, and mitochondrial depletion. This guide covers the four root causes, peptide solutions for each (Semax, Selank, BPC-157, MOTS-c), and a practical protocol that actually addresses the mechanism — not just the symptom.

WellSourced Editorial· April 15, 2026· 24 min read

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PT-141 (Bremelanotide/Vyleesi): The FDA-Approved Libido Peptide — What the Science Says

PT-141 (bremelanotide/Vyleesi) is the FDA-approved peptide for HSDD in premenopausal women. Unlike PDE5 inhibitors, it works centrally via melanocortin receptors in the brain — affecting desire and arousal at the source. Here's the complete picture: clinical data, mechanism, dosing, side effects, and honest assessment.

WellSourced Editorial· April 15, 2026· 12 min read

peptides

PT-141 (Bremelanotide): The FDA-Approved Peptide for Sexual Health

PT-141 (bremelanotide) is FDA-approved as Vyleesi for HSDD in premenopausal women. It works via melanocortin receptors in the brain — not blood vessels like PDE5 inhibitors. The complete guide covers mechanism, clinical data, dosing, and side effects.

WellSourced Editorial· April 15, 2026· 8 min read

Peptides

The GLP-1 Side Effect Survival Guide: Peptides That Help

GLP-1 drugs work. The side effects are real too. Here is what is actually known about managing nausea, muscle loss, Ozempic face, gastroparesis, and gallbladder risk — including which peptide protocols have evidence behind them and which are community-driven.

WellSourced Editorial· April 15, 2026· 18 min read

peptides

SS-31 (Elamipretide): The Mitochondrial Inner Membrane Peptide

SS-31 (Elamipretide) is a precision mitochondrial peptide that targets cardiolipin on the inner mitochondrial membrane. Phase II human trials in heart failure and Barth syndrome have earned it FDA Breakthrough Therapy Designation — making it the most clinically advanced mitochondrial-targeting compound in development.

WellSourced Editorial· April 15, 2026· 18 min read

peptides

The GLP-1 Side Effect Survival Guide — What Peptides Can and Cannot Do

GLP-1 medications like semaglutide and tirzepatide are rewriting obesity medicine. The side effects — nausea, muscle loss, gastroparesis, skin changes — are also very real. This is what the evidence says about peptide support strategies.

WellSourced Editorial Team· April 15, 2026· 22 min read

Peptides

Peptides for Menopause: The 2026 Guide Nobody's Writing Honestly

Menopause is one of the most consequential hormonal transitions a person can experience — and peptide science is finally catching up. This is the comprehensive, no-hype breakdown of what peptides can and cannot do during perimenopause and menopause.

WellSourced Editorial· April 15, 2026· 24 min read

peptides

Semax vs Selank: The Nootropic Peptides Your Psychiatrist Doesn't Know About

Semax boosts focus and BDNF via ACTH-like mechanisms. Selank quiets anxiety without sedation or dependence via selective GABA-A modulation. Both emerged from Soviet-era neuroscience and are approved drugs in Russia. Here's the full honest picture — and how they compare to modafinil, SSRIs, and benzos.

WellSourced Editorial· April 15, 2026· 18 min read

peptides

Peptide Stacking 101: The Wolverine Stack, Longevity Protocol & Cognitive Stack Explained

Peptide stacking is the biggest trend in biohacking right now — covered by National Geographic, Harper's Bazaar, and Goop. Here's the unfiltered breakdown of the three stacks dominating the conversation, and what the evidence actually says about each one.

WellSourced Editorial· April 15, 2026· 20 min read

Peptides

Thymosin Alpha-1: The Immune Peptide That Actually Works

While the US debates it, 35+ countries prescribe it. Thymosin Alpha-1 (Tα1) is backed by more human clinical trial data than almost any other peptide in the wellness space. Here is what the evidence actually shows.

WellSourced Editorial· April 15, 2026· 18 min read

Peptides

Semax: The Complete Guide — Mechanism, Evidence, Dosing, and the NA-Semax-A Variant

Semax is a synthetic ACTH fragment developed by the Russian Academy of Sciences with decades of clinical use for cognitive disorders and stroke recovery. This guide covers the full mechanism, evidence base, NA-Semax-A variant, and dosing protocols.

WellSourced Editorial· April 15, 2026· 18 min read

Peptides

Is Peptide Stacking Safe? What Goop Won't Tell You

Stacking peptides sounds like a productivity hack for your biology. But between the influencer endorsements and the Goop glossaries, the actual risk picture is murky. Here's what the evidence — and the doctors — actually say.

WellSourced Editorial· April 15, 2026· 18 min read

Peptides

MOTS-c — Exercise in a Molecule?

A 16-amino acid peptide encoded in your mitochondria activates the same metabolic master switch as a hard workout. WADA banned it in 2024. The biohacking community is self-experimenting anyway. Here's what the science actually says.

WellSourced Editorial· April 15, 2026· 22 min read

peptides

SS-31 (Elamipretide) — Why This Mitochondrial Peptide Matters for Everyone

In September 2025, the FDA approved the first mitochondria-targeted drug ever — elamipretide, originally known as SS-31. What started as a treatment for a rare genetic disorder is now one of the most talked-about longevity compounds in biohacking circles. Here's everything the science actually shows.

WellSourced Editorial· April 15, 2026· 20 min read

peptides

AOD-9604: The HGH Fragment That Promised Effortless Fat Loss — and What the Trials Actually Showed

AOD-9604 is the lipolytic fragment of human growth hormone — engineered to burn fat without raising IGF-1 or blood glucose. Phase II trials were promising. Phase III failed. Here is what that means for anyone considering it.

WellSourced Editorial· April 15, 2026· 18 min read

peptides

The Gut-Peptide Connection: BPC-157 + KPV for Digestive Healing

BPC-157 repairs gut tissue. KPV quiets the inflammation. Together, they target the two root mechanisms behind most chronic GI conditions — and the research is more compelling than you might expect.

WellSourced Editorial· April 15, 2026· 18 min read

Peptides

GLP-1s, Ozempic & the Culture War — What the Science Says Beyond the Headlines

Between red carpet speculation and insurance battles, the actual science of GLP-1 drugs keeps getting lost. This is the comprehensive, no-moralizing breakdown of what semaglutide and tirzepatide actually do — and what they don't.

WellSourced Editorial· April 15, 2026· 26 min read

Peptides

KPV: The Tiny Anti-Inflammatory Peptide Healing Guts Nobody's Talking About

KPV (Lysine-Proline-Valine) is the C-terminal tripeptide of alpha-MSH. It blocks NF-κB inflammatory signaling in gut epithelial cells, supports tight junction integrity, and shows remarkable results in IBD animal models — with oral bioavailability that most research peptides lack.

WellSourced Editorial· April 15, 2026· 14 min read

peptides

How to Reconstitute Peptides: The Complete Beginner's Guide

Peptides come as a dry powder in a vial — you have to mix them with sterile water before use. This guide walks you through every step, from what to buy to how to calculate your dose, in plain language.

WellSourced Editorial· April 14, 2026· 16 min read

Peptides

The Complete Guide to Peptide Stacking: What You Can (and Can't) Combine

Peptide stacking is one of the most-searched topics in peptide communities — and most of the answers out there are vague, conflicting, or just wrong. This guide changes that.

WellSourced Editorial· April 14, 2026· 14 min read

peptides

GHK-Cu: The Anti-Aging Peptide Exploding in Search — and What the Science Actually Says

From wound healing to hair regrowth to skin remodeling — GHK-Cu has 50 years of research behind it and a rapidly growing following. Here is what you need to know before you buy.

WellSourced Editorial· April 14, 2026· 14 min read

peptides

How to Reconstitute Peptides: The Complete Beginner's Guide

Reconstituting peptides sounds intimidating if you have never done it before. This guide walks you through every step — what reconstitution actually means, what supplies you need, how to mix properly, how to calculate your dose after mixing, and how to store everything safely.

WellSourced Editorial· April 14, 2026· 15 min read

peptides

Peptides 101: A Beginner's Guide to What They Are and How They Work

You heard about peptides on a podcast. Maybe your dermatologist mentioned them, or a wellness influencer posted about BPC-157. Now you're down a rabbit hole, sifting through clinical jargon and conflicting claims. This guide cuts through the noise.

WellSourced Editorial· April 12, 2026· 14 min read

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Understanding Semaglutide: Beyond the Weight Loss Headlines

Semaglutide changed the conversation about metabolic health. But the science goes deeper than the headlines — here is what you should actually know.

WellSourced Editorial· April 8, 2026· 7 min read

peptides

BPC-157: What the Research Actually Says

Everything you need to know about the peptide researchers call "the healing peptide" — what BPC-157 is, what the studies show, and what remains unknown.

WellSourced Editorial· April 4, 2026· 8 min read

peptides

TB-500: What the Research Says About Thymosin Beta-4

TB-500 is the peptide athletes whisper about for recovery. Here is what the research actually shows — tissue repair, inflammation, and the evidence gaps you should know about.

WellSourced Editorial· March 14, 2026· 6 min read