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The research peptide directory

Compare verified research peptide suppliers — purity, COAs, pricing, and live deals — all in one place.

4.8 avg · 12k+ researcher orders COA-verified · ships to all 50 states
PP
Purple Peptides
Premium research-grade peptides
4.9(1,820)
$39/mo
ResearchPeptides
PS
Peptide Supply
Reliable peptide sourcing
4.6(940)
$29/mo
ResearchPeptides
AP
Apollo Peptide Sciences
Mission-grade peptide science
4.9(1,110)
$45/mo
ResearchPeptides
PPPurple Peptidesfrom $39
HPHealius Peptidesfrom $42
PSPeptide Supplyfrom $29
GSGenoSciencefrom $49
BIBioInfinity Labfrom $35
APApollo Peptide Sciencesfrom $45
LWLiveWell Peptidesfrom $32
OPOffline Peptidesfrom $28
P3Prime Performance Peptidesfrom $38
MFMedFit Peptidesfrom $34
SPSynthesis Peptidesfrom $36
PLPolaris Peptidesfrom $31
PPPurple Peptidesfrom $39
HPHealius Peptidesfrom $42
PSPeptide Supplyfrom $29
GSGenoSciencefrom $49
BIBioInfinity Labfrom $35
APApollo Peptide Sciencesfrom $45
LWLiveWell Peptidesfrom $32
OPOffline Peptidesfrom $28
P3Prime Performance Peptidesfrom $38
MFMedFit Peptidesfrom $34
SPSynthesis Peptidesfrom $36
PLPolaris Peptidesfrom $31
The PepSmarts index
01
12
Suppliers listed
02
12k+
Researcher orders
03
50
States shipped
04
31
Active deals
Indexing the research peptide shelf — purity · COAs · sourcing · live deals
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r/The research hub

We did the research, so you don't have to — we brought everything into one place.

Real threads, lab results, and reorder reports — pulled from the peptide research community for each of our top-rated suppliers.

r/
Community threads

What Reddit says about our top suppliers

Verified
reddit.com/r/PeptideResearch
506
r/PeptideResearchPosted by u/peptide_prof12h ago 2
Vendor Review

Purple Peptides actually delivered on the COAs — surprisingly legit

Got my order from Purple Peptides last week and ran the COAs against an outside lab. Purity matched within tolerance, packaging was discreet, and shipping was 3 days to the east coast. Honestly the smoothest reorder I've had in months.

101 comments Share
reddit.com/r/Nootropics
462
r/NootropicsPosted by u/hplc_henry1d ago 1
Discussion

Anyone else stop bouncing between vendors after trying Purple Peptides?

I used to rotate through 4-5 suppliers depending on what I needed for research. After two clean orders from Purple Peptides I just consolidated. Catalog covers what I need, prices are reasonable, and support actually answered an email in under 24h.

196 comments Share
Aggregated from r/Peptides · r/PeptideResearchView Purple Peptides
Frequently asked

Questions, answered.

The fast facts on suppliers, COAs, shipping, and how PepSmarts works.

Are these suppliers vetted?

Every featured supplier is verified — we confirm they publish third-party COAs (HPLC + mass spec), use cold-chain shipping where appropriate, and have an active researcher community track record.

How does pricing compare to other directories?

Prices shown are pulled from each vendor's public catalog and reflect typical market rates per vial. Deals listed are real promo codes — copy & apply at checkout on the supplier's site.

Are research peptides legal?

Yes — research peptides are legal in the US when sold strictly for laboratory research. They are not for human consumption and are not FDA-approved for clinical use.

How fast do suppliers ship?

Most listed suppliers ship within 24–48 hours of order, with 2–5 day domestic delivery. Cold-chain and international options vary by vendor — see each provider's profile.