most confidently repeated claim that falls apart when you check it?
Not outright lies. The confidently repeated things that fall apart when you follow the source. Mine: "it's been used safely for decades". Follow that back and it usually means it …
Peptide Research Community
Discussion of published peptide research — what studies found, how good the evidence is, and what is still unknown.
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Categories
- General DiscussionOpen discussion about peptide research, and anything that does not fit elsewhere.
- Beginner QuestionsNew to reading peptide research? Ask the questions nobody explains properly.
- Peptide ComparisonsHead-to-head discussion: what actually separates two compounds.
- GLP-1 & MetabolicSemaglutide, tirzepatide, retatrutide and the wider metabolic research space.
- Recovery & RepairBPC-157, TB-500, growth-hormone secretagogues and tissue-repair research.
- Longevity & MitochondrialMOTS-c, SS-31, epitalon and the longevity research space.
- Skin, Hair & CosmeticGHK-Cu, AHK-Cu, melanotan and cosmetic-adjacent research.
- Cognitive & NeuroSemax, Selank, dihexa and nootropic peptide research.
- Studies & EvidenceRead a paper? Post it here. Evidence tier gets labelled every time.
- News & New CompoundsNewly published research, regulatory changes and compounds gaining attention.
- Research LogsStructured logs and templates for tracking a research plan over time.
- Tracking & CalculatorDosing arithmetic, reconstitution maths, and how people use the tracker.
- Storage, Reconstitution & SuppliesBacteriostatic water, lyophilised vs reconstituted storage, and research supplies.
- Peptide Library App & Feature RequestsWhat the app should do next. Feature requests and product discussion.
- PollsQuick community polls. The lowest-effort way to join a discussion.
- Community & GuidelinesHow this community works, what is expected, and meta discussion.
Recent discussions
if these need a fridge how does anything survive being shipped?
Question that follows naturally from the storage threads. Answer: powder and solution have very different tolerances and shipping happens in the powder state. Without water, hydro…
anyone have a decent source on peptide penetration through skin?
the topical discussions keep hitting this and i cant find anything that treats it properly rather than in passing
PSA: TB-500 and thymosin beta-4 are not the same thing
Came up in the bpc/tb500 thread and deserves its own post. Thymosin beta-4 is a 43 amino acid protein, naturally occurring, well characterized, with a real research literature inc…
which thread here changed how you read something?
curious which ones actually stuck. for me it was the tb4 / tb500 naming one. id repeated that conflation myself and never checked
Poll: which part of the app do you actually open most?
not which is most useful in principle, which one you actually open
what does "research use only" actually mean
Term is everywhere and misunderstood in both directions. What it means: the material isn't authorized for human or veterinary use. It's a classification about permitted use. What …
is there a current summary anywhere of which incretin agents are at which stage
keeps changing and i cant find one thats current. registries are accurate but impossible to read as an overview
a meta-analysis of weak studies is a weak meta-analysis
Meta-analysis sits high on most evidence hierarchies and gets treated as authoritative regardless of what went into it. What it does well: increases precision when combining compa…
notification settings i'd actually want
reply notifications on, upvote notifications off. thats basically it. upvote notifications are the ones that train you to ignore the badge because theres never anything to do abou…
compounded vs branded is a regulatory question not a pharmacology one, right?
these get discussed like theyre different drugs and i dont think thats the right frame. the molecule can be the same. what differs is the pathway: an approved product has a review…
the best threads here are the ones where people disagreed
The threads that have been most useful here are the ones where people disagreed. The overrated thread, the bpc/tb500 one, the GIP puzzle. What seems to make the difference: say wh…
which peptides are actually light sensitive and how much does it matter?
Amber vials and "keep away from light" are everywhere but the specifics never are. What I understand: photodegradation is driven mainly by certain residues (tryptophan, tyrosine, …
why do some compounds have like 4 names
every one has a code, a chemical name, sometimes a trade name and sometimes a nickname. is there a reason or is it just a mess
show your setup: how are you structuring a research log?
Structure I've landed on after several rewrites, offered as a starting point not a recommendation. Per vial: compound, mass, reconstitution date, diluent and volume, resulting con…
the three questions that come up most often here
Having answered a lot of these now, almost everything reduces to three: what do the units mean, how do I store this, and how good is the evidence for X. All three have dedicated t…
boring supplies checklist, what am i forgetting?
not the exciting part of this hobby but the part that decides whether anything else works. stuff that comes up repeatedly: alcohol swabs, the right syringes, a sharps container, s…
suggestion: evidence tier as a dropdown instead of a convention
the studies category convention works but relies on people remembering. a dropdown on the composer would make it consistent and filterable
why is there so little human data on most of these?
Genuine question, not rhetorical. If some of these compounds have been around for decades, why has nobody run a proper trial?
new here? say what you're reading about
Low stakes intro thread. Not a bio, just: what brought you here and what are you currently trying to understand. Makes the place easier to navigate if people know who's interested…
p values in underpowered preclinical work
a significant result from an n=8 animal study tells you less than most people assume, and a null result from n=8 tells you almost nothing at all. the asymmetry is worth holding on…
paper thread: post one you read this month and say what tier it is
Recurring thread. Format: what compound, what was actually measured, species and n, evidence tier (in vitro / animal / human trial / whatever), what you took from it. The format m…
the number on the vial is the total not the concentration, right?
got a vial that just says 5mg on it. took me embarassingly long to work out thats the total amount of powder in there, not a concentration. concentration only exists once you add …
PSA: the printed expiry date is not the date that matters once you open it
Small distinction that causes real confusion. Expiry date: set by the manufacturer for the unopened product stored as directed, backed by stability testing on that product in that…
registry results reporting compliance is worse than i expected
Went looking for completed trials with posted results and the gap between completion and reporting is large across the board. Not specific to this space but relevant to how much w…
the 5 peptide dosing math mistakes that cause most of the confusion here
Collected from the threads in this category over the last few months. 1. Treating syringe units as a mass. They're a volume marking. Meaningless without a concentration. 2. mg/mcg…
how do you handle temperature when traveling for a few days?
the storage threads all assume a fridge you control. what do people do when that isnt available for a few days
question of the week: what's one thing you changed your mind about?
Starting a weekly question since the threads that go best here are the ones with a specific prompt. This week: what's something you believed about this space that you no longer be…
pet peeve: "GLP-1" is not a category name
GLP-1 agonist means an agonist at the GLP-1 receptor. Semaglutide is one. Tirzepatide is a dual GLP-1/GIP agonist. Retatrutide is a triple. Calling those "GLP-1s" is like calling …
melanotan 1 vs 2, the difference is selectivity not strength
Melanotan 1 (afamelanotide) is comparatively selective for MC1R, the pigmentation receptor. It's actually approved for one rare photosensitivity condition (erythropoietic protopor…
Discussions are educational and cover published research. Nothing here is individualised medical advice.