Peptide Librarymy checklist for a compound i've never heard of
Runs in order, stops early most of the time. 1. What's its actual name and are there others? 2. Is it a fragment, an analog, or a novel molecule? Of what? 3. Does any human data e…
Peptide Research Community
Discussion of published peptide research — what studies found, how good the evidence is, and what is still unknown. Ask a question in Community Q&A.
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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
why are the trial escalation schedules so slow compared to the half life?
Reading the published protocols, the escalation schedules are noticeably gradual and the reasoning is tolerability, not efficacy. The GI effects in this class are dose related and…
5 amino 1MQ
Why do you use it? Typical injectable protocols? How has it helped you? Did you have any side effects?
why hair claims are structurally hard to test
something ive come to appreciate reading this stuff. hair grows on a cycle with phases lasting months to years. any intervention has to be assessed over a timescale long enough fo…
peptide vs protein, where's the actual line?
Common first question and the answer is less precise than people expect. Both are chains of amino acids. The distinction is basically length and it's a convention, not a law. The …
which compound surprised you most once you actually read the research?
either direction, better than you expected or a lot worse. mine was tb-500, and worse. id absorbed the impression there was human data. there is, for thymosin beta-4, which is a d…
dihexa: the enthusiasm is way ahead of the evidence
The claims around dihexa are dramatic, potency figures relative to reference compounds get quoted freely. The literature behind them is thin: a limited number of preclinical paper…
how to actually find the primary source behind a claim
Since citation chasing keeps coming up as the highest value habit, here's the mechanical version. 1. Get the compound's actual name. Trade names, development codes and common name…
show your tracker setup
Screenshots optional. Mostly interested in how people have organized it. How many active items, what naming convention, whether you use categories. Mine is deliberately minimal: o…
healthspan is the better target and the harder one to measure
Lifespan is easy to measure and mostly not what people want. Healthspan is what people want and much harder to define. The measurement problem is real: function over time requires…
what repeated freeze thaw actually does to a peptide in solution
Since it came up in the storage thread, the mechanism in a bit more detail. Three things happen during freezing that are hard on a peptide in solution. Cryoconcentration: as water…
if systemic dosing works in the rat studies, does injecting near the injury even matter?
common assumption that putting it near an injury concentrates the effect there. worth checking against what the studies did. in the rodent literature both local and systemic route…
what NOT to track
Less discussed than what to track and arguably more important. Daily subjective ratings on a fine scale. You know what you took, so the rating is contaminated by expectation. A da…
six months in and still feel like a beginner, is that normal
been reading pretty consistently for about six months and i still feel like i dont have a handle on it. every time i think i understand something i find out the evidence is thinne…
what would you add to the calculator?
The calculator handles the core conversion fine. Things I'd find useful on top: 1. Syringe type selector, U-100 vs U-40, since that silently breaks every shortcut. 2. Reverse mode…
what are you reading about right now?
recurring open thread. whatever youre in the middle of, doesnt need to be a conclusion, half formed is fine. ive been going back through unanswered threads here and noticing how m…
terminated and withdrawn registrations are information nobody reads
Registries record terminations and withdrawals, sometimes with a reason. Almost nobody looks. Reasons vary enormously in what they imply. Slow recruitment, funding, business decis…
KPV vs BPC-157 for inflammation reading, does narrow beat broad?
KPV is the C-terminal tripeptide of alpha-MSH. The proposed mechanism is anti inflammatory and relatively specific, which I find easier to reason about than something claimed to d…
how much should industry funding change how you read a trial? i think i overcorrected
genuine question because i think i overcorrected on this for a while. for ages i basically discounted anything with a commercial funder. then i realised that means discounting mos…
sub-q vs IM, what does the route actually change?
Trying to understand what actually differs beyond the obvious anatomy. As I understand it sub-q is into the fat layer, less blood flow, so absorption is slower and more sustained.…
the melanocortin receptor family, briefly
Context for the MT-1 / MT-2 discussion. There are five melanocortin receptors with quite different distributions and roles: pigmentation, appetite and energy balance, steroidogene…
mazdutide and survodutide, anyone following these or is it all reta?
Everyone is focused on retatrutide but there are several other agents at similar or earlier stages with different receptor combos. Survodutide is GLP-1/glucagon. So glucagon recep…
secretagogue vs just giving the hormone, why does the distinction matter?
Adding to the glossary thread because this one has real consequences. Giving a hormone directly overrides the body's regulation of it. The level is whatever you supplied. A secret…
Poll: which recovery compound do you read about most?
curious whether attention here matches the general pattern
NAD+ Experience
Can anyone describe their NAD + protocols and experience? Just started mine this week at 75 mg a week
the calculator says 3.72 units. a syringe does not do 3.72 units
a calculator will happily return 3.72 units. a syringe will not deliver 3.72 units. realistic resolution on a standard U-100 is around one unit, maybe half with good technique and…
what's the hardest thing to stay honest about in this space?
Not the hardest to understand. The hardest to stay honest about. Mine: the funding argument. "There are no trials because nobody can patent it" is genuinely true as a description …
what cardiolipin actually does, for anyone following the ss-31 stuff
Background since it comes up and rarely gets explained. Cardiolipin is a phospholipid found almost exclusively in the inner mitochondrial membrane. It has an unusual four tail str…
what do you guys actually use to store vials?
boring logistics question but it comes up. what are people actually keeping vials in? things that seem to matter from what ive read: light protection, not having them rattle aroun…
what does a certificate of analysis actually tell you?
COAs get cited like they settle things and I'm slowly realising they're narrower than people think. What one typically reports: identity (often mass spec, confirms the molecular w…
Discussions are educational and cover published research. Nothing here is individualised medical advice.