The open peptide
research platform
Open reviews, goal-based protocols, and free tools. No paywalls. No prescriptions. No fluff.
Platform tools
Five Free Tools
Open to everyone
Built for researchers, open and ungated
Calculator
Reconstitution math done right. Single peptide or blend mode with animated syringe visualizer.
Open calculator→Protocol Library
10 goal-based pages with compounds, dosing ranges, timing, and community outcome data.
Browse protocols→Stack Builder
Pick 1 or 2 goals and your experience level. Full research stack built in seconds.
Build a stack→Vendor Reviews
Open, ungated vendor intelligence. COA status, Peptul Scores, community reviews.
View vendors→Price Comparison
Live vendor prices normalised to price per mg, across every peptide we track.
Compare prices→Start with the calculator
Reconstitution math in under 30 seconds.
Real prices, yesterday and today
The real price of each compound's closest-to-10mg listing, yesterday and today, so you can see exactly how it moved. Collected nightly from vendor storefronts.
Community
What researchers are saying
Sarah M.
Nurse Practitioner
“Finally a resource that doesn't feel like it's trying to sell me something. The vendor reviews are transparent and the information is educational. Bookmarked immediately.”
Tyler B.
Biohacker
“ngmi without proper research fr. peptul is the only site where i can cross-check vendors, build a stack AND calculate my dose without opening 6 different tabs. gg”
Marcus D.
Personal Trainer
“The calculator alone saved me so much confusion. I was always second-guessing my reconstitution math and now it's done in seconds.”
Amanda L.
Wellness Coach
“I was so overwhelmed trying to find reliable information. This broke everything down in a way that actually made sense to me. The stack builder is so smart.”
Danny C.
Gym Owner
“stack builder + calculator combo is cracked. built my clients a full protocol in under 5 minutes. used to take me a whole evening cross-referencing sources”
Sarah M.
Nurse Practitioner
“Finally a resource that doesn't feel like it's trying to sell me something. The vendor reviews are transparent and the information is educational. Bookmarked immediately.”
Tyler B.
Biohacker
“ngmi without proper research fr. peptul is the only site where i can cross-check vendors, build a stack AND calculate my dose without opening 6 different tabs. gg”
Marcus D.
Personal Trainer
“The calculator alone saved me so much confusion. I was always second-guessing my reconstitution math and now it's done in seconds.”
Amanda L.
Wellness Coach
“I was so overwhelmed trying to find reliable information. This broke everything down in a way that actually made sense to me. The stack builder is so smart.”
Danny C.
Gym Owner
“stack builder + calculator combo is cracked. built my clients a full protocol in under 5 minutes. used to take me a whole evening cross-referencing sources”
Zach W.
Longevity Enthusiast
“ser this site is built different. no paywalls, no affiliate nonsense shoved in your face, just clean info. been using it every cycle since i found it”
Jake R.
Fitness Coach
“bro i used to spend like 2 hours on reddit trying to figure out what to stack. found peptul and had my whole protocol built in 10 mins. actually insane”
Priya K.
Software Engineer
“I approached this the same way I approach any research - I want data, not opinions. Peptul delivers that. The protocol pages are thorough and the vendor section doesn't hide anything.”
Dr. Lisa T.
Sports Medicine
“As someone who gets asked about these compounds regularly, I appreciate having a resource I can point patients to that's educational, not promotional. The vendor transparency is particularly well done.”
Ryan K.
CrossFit Athlete
“used to have 15 tabs open every time I researched a new compound. peptul killed that habit immediately. one place for everything, no cap”
Zach W.
Longevity Enthusiast
“ser this site is built different. no paywalls, no affiliate nonsense shoved in your face, just clean info. been using it every cycle since i found it”
Jake R.
Fitness Coach
“bro i used to spend like 2 hours on reddit trying to figure out what to stack. found peptul and had my whole protocol built in 10 mins. actually insane”
Priya K.
Software Engineer
“I approached this the same way I approach any research - I want data, not opinions. Peptul delivers that. The protocol pages are thorough and the vendor section doesn't hide anything.”
Dr. Lisa T.
Sports Medicine
“As someone who gets asked about these compounds regularly, I appreciate having a resource I can point patients to that's educational, not promotional. The vendor transparency is particularly well done.”
Ryan K.
CrossFit Athlete
“used to have 15 tabs open every time I researched a new compound. peptul killed that habit immediately. one place for everything, no cap”
Why Peptul
Built on transparency
No paywalls
Every review, protocol, and tool is publicly accessible.
No products sold
We are an information platform, not a vendor or shop.
Community outcome data
Real reports from the research community, not marketing.
Transparent by design
Disclosed commissions. Editorial independence is non-negotiable.
For educational and research purposes only. Not medical advice. Always consult a qualified healthcare provider before using any research compound.