r/Peptides · 312 comments · 11hpositive
“Two months on retatrutide — sharing my labs”
OP reports 11.4% bodyweight loss, no adverse hepatic markers. Comments flag missing baseline.
Wed · May 7, 2026 · 06:42 ETFDA’s PCAC delays Cat 2 review on tirzepatide compounds; vendors quietly recalibrating.
Editor’s full note →The pulse · Issue №347
The peptide market, read carefully.
Studies, regulatory shifts, vendor scoring, community signal. Updated daily by editors who actually read the methods sections.
1,847
studies indexed
312
peptides tracked
47
vendors scored
14,231
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Newest studies
NEW
BPC-157 attenuates colitis-induced inflammation in a murine model
MixedJ. Gastroenterol Res.n=48 MouseMay 6
Retatrutide 12mg weekly: 24-week glycemic and weight outcomes
SupportedNEJMn=312 HumanMay 5
GHK-Cu topical efficacy on photoaged skin: a sham-controlled RCT
Weak / noneJAADn=96 HumanMay 4
Updated 11h ago
Regulatory watch
FDAMay 6
PCAC defers Cat 2 vote on tirzepatide compounds to July session
Compounders extended status quo through Q3. Industry letter notes shortage list still active.
USPMay 4
Draft monograph for sermorelin published for public comment
Comment window 60 days. Defines impurity thresholds at 0.5%.
DEAMay 3
Methylene blue scheduling rumor — what's actually true
Editor: there is no proposed rule. The viral post misread a 2023 letter.
Updated 26m ago
From the community
NEW
r/PeptideHarm · 148 comments · 1dmixed
“Reconstitution sterility — what people get wrong”
Discussion converges on bac-water vs. sterile-water debate. Cited mostly hearsay.
r/Nootropics · 74 comments · 2dmixed
“Selank for anxiety — dose-response thread”
50+ replies. Anecdotal, no labs. Editor: trial-quality evidence remains limited.
Search trends, 7d
Trending peptides
Retatrutide
+148%
Tirzepatide
+24%
BPC-157
−6%
Methylene Blue
+312%
Cagrilintide
+11%
TB-500
−18%
Featured
The investigation
[ INVESTIGATION HERO ]
INVESTIGATION · 18 min read
Inside the gray-market reconstitution-water shortage that nobody is talking about
Six manufacturers, three FDA inspections, and the supply-chain bottleneck quietly raising contamination risk for tens of thousands of users.
By Sarah Chen · May 4
[ PRIMER HERO ]
PRIMER · 22 min read
Reading a peptide trial like an editor: a working primer
What N=12 actually means, why species matters more than dose, and the four phrases in an abstract that should make you keep scrolling.
By Dr. M. Olawale · May 1
Updated weekly
Top vendors
1
Limitless Life
SAB-3 letter posted
COA + service
A−
2
Peptide Sciences
Stable
COA + research-only
A
3
Pure Rawz
New COA partner
Fast ship · COA gaps
B+
4
Modern Aminos
Out of stock 4 SKUs
Inconsistent COA
B
5
Amino Asylum
Quietly raised pricing
Service problems
C
312 indexed
Browse by peptide
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