INDEPENDENT RESEARCH RESOURCE SOURCE-LED PLAIN ENGLISH NO PEPTIDES SOLD HERE
PJ PeptidesPJ PEPTIDESResearch, made understandable.

THE CLEARER SIDE OF PEPTIDE RESEARCH

SCIENCE IS COMPLEX.LEARNING ITSHOULDN’T BE.

Plain-English guides to peptide science, evidence levels, research status and the questions scientists are still working to answer.

Independent educational resource · No peptides sold here
PJ Peptides — Engineered for Dominance
17 research topics
17 Guides20 Products3 Languages

THE PJ STANDARD

Learn what a compound is, what researchers are studying, how strong the evidence is—and what remains unknown.

CLARITY / CONTEXT / SOURCES

FEATURED / WATCH NOW

Go deeper.
See the science.

A featured video from the PJ Peptides research journey—presented here as an additional educational resource.

Watch on YouTube ↗

01 / PEPTIDE INFORMATION

Understand the signal.
Skip the hype.

Each guide begins with the simplest useful explanation, then separates human research from animal or laboratory findings.

View all 17 topics →

02 / RESEARCH MATH

A clean calculator.
No guesswork.

Convert the numbers you enter into concentration, milliliters and U-100 unit markings. The calculator never chooses or recommends an amount.

Open full calculator guide →
U-100 syringe marking—units
THE MATH

Concentration = vial amount ÷ liquid volume. Volume = desired amount ÷ concentration. On a U-100 scale, 1 mL equals 100 unit marks.

Calculation only—not a dose recommendation.

This tool converts entered numbers into volume and U-100 markings. It does not verify a product, choose an amount, account for individual health, or provide preparation or administration instructions. Never use it as a substitute for a licensed clinician or pharmacist.

03 / SUPPLIES

Useful tools,
clearly labeled.

See all supplies →
IT’S ALL GENETICS shirt mockupNEWEST DESIGN

04 / MERCHANDISE

OBSIDIAN THREAD CO. × PEPTIDE CULTURE

IT’S ALL
GENETICS.

The first featured piece in our science-and-fitness collection. Printed and fulfilled through the Obsidian Thread Co. storefront.

$16.99View shirt at ObsidianSee the complete edit →

05 / LATEST NEWS

New findings.
Read carefully.

News & publishing standard →
Phase 3 update

Retatrutide reports additional Phase 3 results

Lilly reported results from two additional obesity trials. Retatrutide remains investigational; company announcements are not the same as FDA approval or a peer-reviewed final publication.

Read source · Eli Lilly ↗
Peer-reviewed research

Cagrilintide + semaglutide results published

Two large trials reported body-weight outcomes in adults with obesity, including a trial in people with type 2 diabetes. The combination remains distinct from cagrilintide alone.

Read source · PubMed / NEJM ↗
Safety and regulation

FDA flags evidence gaps for several bulk substances

FDA's continuously maintained review identifies limited human safety information or other concerns for compounds including BPC-157, GHK-Cu, MOTS-C and Melanotan II.

Read source · U.S. FDA ↗