// journal
Field notes.
Long-form on peptide mechanisms, research evidence, and the protocols we are building Pepmod around. No sponsored content. No affiliate links.
How to read a peptide Certificate of Analysis
A COA is the single most important document a peptide supplier publishes. Almost none of them do. The ones that do are often missing the tests that actually matter.
6 min read · COA · purity · endotoxin · identityRetatrutide, demystified
Phase II data on Retatrutide suggests we have barely started to understand what is possible when peptides target multiple metabolic axes at once.
7 min read · 2 citations · GLP-1 · GIP · GlucagonMercury: cellular metabolism, recalibrated
The metabolic conversation in 2025 was almost entirely about GLP-1s. It skipped over a more interesting question: what if the real dysregulation is happening upstream, at the cellular energy level?
6 min read · 3 citations · 5-Amino-1MQ · AOD-9604Sentinel: the two peptides quietly reshaping immune modulation
Thymosin Alpha-1 and LL-37 are both older than most readers know. Both are doing something interesting again in 2025-2026 research.
6 min read · 3 citations · Thymosin Alpha-1 · LL-37Atlas: how CJC-1295 and Ipamorelin restore your GH pulse
The literature is clear: what matters for body composition, sleep quality, and tissue repair is restoring the natural pulse architecture that declines with age.
6 min read · 2 citations · CJC-1295 · IpamorelinThe Wolverine stack, mechanistically
Walk into any peptide-curious Discord and you will find someone asking about the Wolverine stack. The name comes from anecdotal reports. The underlying biology is more interesting than the marketing.
7 min read · 3 citations · BPC-157 · TB-500