ThePeptide.expert
The independent reference

The definitive research guide to peptides

Evidence-graded, regulatory-accurate, plain-language. For curious consumers, health enthusiasts, and wellness practitioners.

40+ peptides coveredFDA status updated 2026Evidence-gradedResearch language throughout
Why this exists

The Unbiased Resource the Peptide Space Was Missing

Every other peptide resource is either a vendor selling products or a forum sharing opinions. We built the thing that was missing: an independent, evidence-graded, regulatory-accurate reference platform with zero commercial agenda.

Editorially independent

Our research ratings, evidence tiers, and regulatory content are never influenced by commercial relationships. AminoClub is a licensed, quality-controlled supplier we have evaluated for purity standards and compliance — that relationship is disclosed openly throughout the site. What we will never do is inflate a rating, hide a risk, or favor a compound because of any financial relationship. The research always speaks for itself.

Evidence-graded by research quality

Every compound is rated 1–5 based on published research quality — not popularity, not vendor claims. Primary sources: PubMed, FDA documents, ClinicalTrials.gov, and peer-reviewed journals.

Regulatory status updated in real time

FDA category status is updated as changes occur. The July 2026 PCAC hearing is tracked live. What was true last year may not be true today — we track every change.

Our evidence rating system

How we grade the research

Before you browse the database, understand what the evidence dots mean. This rating system appears on every peptide profile. It reflects published research quality — not safety or suitability for any individual.

Phase III / FDA approved

The highest evidence standard. These compounds have completed the full FDA drug approval process or Phase III randomized controlled trials. The science is as solid as it gets.

Examples: Tesamorelin, Sermorelin, PT-141, Gonadorelin

Strong clinical data

Multiple published human studies with meaningful evidence. Not yet FDA-approved but with a strong evidence base. Often approved in other countries. Mechanism well-characterized.

Examples: Thymosin Alpha-1, GHK-Cu, Argireline, Matrixyl

Human data exists

Human pharmacological or Phase I/II trial data published. The compound is being actively researched in humans. Mechanism well-understood but not yet at clinical approval stage.

Examples: BPC-157, Semax, Ipamorelin, MOTS-c, Epitalon

Limited human data

Primarily preclinical data with limited human studies. Mechanism is plausible but human evidence is early-stage. More research needed before meaningful conclusions.

Examples: GHRP-2, GHRP-6, IGF-1 LR3, Melanotan II

Preclinical only

Animal or in vitro data only. No published human clinical trials. Mechanistically interesting but human evidence is entirely absent. Approach with significant caution.

Examples: Dihexa, very early-stage research compounds

Evidence tier reflects published research quality only — not safety, suitability, or a recommendation for any individual. A 5-dot compound is not automatically right for you. A 1-dot compound is not automatically unsafe.

The compounds in this database are research peptides — not consumer products, not supplements, and not medications available over the counter. Many are sold exclusively for laboratory and scientific research purposes. Understanding their legal status and evidence base is the starting point, not the finish line.

ThePeptide.expert does not sell peptides. We have no financial relationship with any vendor except a disclosed affiliate arrangement with one sourcing option for Pro members. Our content is independent.

Always consult a qualified healthcare provider before making any decisions about research compounds.

Why trust us

Built on primary sources. Zero vendor influence.

40+
Research compounds covered
Editorial independence
Ratings never influenced by commercial relationships
2026
FDA regulatory status — current
Primary
Sources — PubMed, FDA, ClinicalTrials.gov

ThePeptide.expert was built because the person searching at midnight deserved better than vendor blogs and Reddit threads. Every piece of content is sourced from primary research, every rating is based on published evidence, and every regulatory status is pulled from official FDA documents. We have one agenda: accuracy.

Featured expert content
Featured: Dr. Alex Tatem — UrologistReferenced: Huberman Lab — Stanford
Start here

Your knowledge, your starting point.

Find your entry point based on where you are in your research journey.

New to peptides

New to peptides

Just heard about peptides and want to understand what they are, whether they are legal, and where to start. We will show you the most researched and accessible compounds first.

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Some research done

I've done some research

You know the basics. Now you want GH optimization, recovery stacks, and metabolic compounds without the noise.

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Active protocol

I have an active protocol

You are already researching peptides and want complete mechanisms, stacking data, evidence tiers, and the full regulatory picture.

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Clinical practice

I work with a clinician

Working with or are a healthcare provider. Pro unlocks complete protocols, regulatory tracking, sourcing guides, and the AI research Q&A.

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Explore by area

Research categories.

Featured profiles

Recently summarized.

BPC-157

Body Protection Compound-157

Cat 1 — 2026
injectableoral
Evidence

15-amino acid peptide derived from human gastric juice. Promotes tissue repair, gut healing, and angiogenesis. Among the most-researched repair peptides available.

TB-500

Thymosin Beta-4 fragment

Cat 1 — 2026
injectable
Evidence

Synthetic fragment of Thymosin Beta-4. Promotes systemic tissue repair through actin regulation and stem cell activation. Often stacked with BPC-157.

Sermorelin

GHRH(1-29) / Geref

FDA approved
injectable
Evidence

The original FDA-approved GHRH analogue. Stimulates natural GH production through your own pituitary gland. Most natural approach to growth hormone optimization available.

Tesamorelin

Egrifta / Stabilized GHRH / GHRH analogue

FDA approved
injectable
Evidence

The most clinically validated GHRH analogue available. FDA-approved for visceral fat reduction. Emerging data for cognitive protection in early Alzheimer's and MCI. Widely prescribed off-label for body composition and longevity.

Ipamorelin

Growth Hormone Secretagogue (selective)

Cat 1 — 2026
injectable
Evidence

The most selective GH secretagogue available. Stimulates strong growth hormone release with minimal cortisol or prolactin side effects. Considered the gold standard secretagogue.

GHK-Cu

Copper peptide / Glycyl-L-histidyl-L-lysine-Cu²⁺

Cat 1 — 2026
injectabletopical
Evidence

Naturally occurring copper-binding peptide found in human plasma. Declines significantly with age. Influences over 4,000 genes. Strongest evidence base for topical skin applications.

Featured research video

Understand the research landscape

Board-certified Urologist Dr. Alex Tatem explains what peptides are, how they work, and what the 2026 FDA regulatory changes mean for researchers.

Dr. Alex Tatem on Diary of a CEO — April 2026. 1.9M views.

Featured for educational purposes. ThePeptide.expert is an independent platform not affiliated with Dr. Tatem.

Weekly digest

New research, distilled.

Every Sunday — one peptide, what was published this week, what it may mean.