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The research library for the modern health stack

Every pen, peptide, and pill, decoded.

How GLP-1s work dose by dose. Which peptides have real research behind them. What is honestly inside the supplement aisle. Plain English, sources shown, weak spots included.

Injection pens and medical vials on a red gradient backdropGLP-1sFrom first dose to plateauSmall glass peptide vials with a dropper bottle in warm lightPeptidesCatalogued and gradedColorful capsules and powder bowls arranged on a coral backdropSupplementsHeld to the evidence
Plain EnglishSources CitedEvidence GradedEducational OnlyNo Brand SponsorsWeak Spots Shown
A woman at a sunlit kitchen counter writing in a tracking notebook, an injection pen resting beside her
Illustration of a chaotic overflowing plate becoming a calm balanced plate with a steady line
Before and after, as the trials measure it

Field One · GLP-1s

GLP-1s, from first dose to plateau

Semaglutide and tirzepatide turned appetite into front-page science. Behind the pens sits a deep pile of trial data, and the collection walks through all of it.

  • Appetite & cravings week over week in the trials
  • Plateaus & rebound what extension studies saw
  • Muscle & metabolism lean mass and resting energy
  • Side-effect timelines what shows up, and when
  • Prescriber questions what to ask before the script
Explore the GLP-1 collection
An athlete resting on a gym bench in warm sunlight, towel around his neck
Illustration of a frayed muscle fiber becoming smooth and whole
Before and after, as the trials measure it

Field Two · Peptides

Peptides, catalogued and graded

BPC-157, TB-500, GHK-Cu: the names travel fast, and the evidence travels slowly. The collection sorts the peptide world class by class and says out loud how mature the research really is.

  • Repair & recovery animal data vs human data
  • Skin & signaling what the copper-peptide studies measured
  • Sleep & the GH axis secretagogues under the microscope
  • Legality & sourcing research-chemical labels and gray markets
  • Evidence maturity a grade for every class
Explore the peptide collection
A woman in a health-store aisle reading a supplement label with a skeptical look
Illustration of a drained battery and restless scribbles becoming a full battery beside a calm moon
Before and after, as the trials measure it

Field Three · Supplements

The aisle, held to the evidence

Every shelf promises the same five outcomes. The studies are far pickier. Category by category, the collection separates compounds with real trial data from marketing with a nice label.

  • Energy & focus what beat placebo, what never did
  • Sleep & recovery magnesium, glycine, melatonin, dose by dose
  • Strength & output creatine's long record, timing myths
  • Gut & absorption forms, fillers, and what survives digestion
  • Label reading third-party seals and proprietary-blend tricks
Explore the supplement collection

Every guide is an educational research summary with cited sources. Nothing on this page or inside the collections is medical advice, and nobody here promises you an outcome. Talk to a qualified health professional before changing your regimen.

The method

Built like a review, not a pitch

  1. Primary sources only

    Peer-reviewed studies, meta-analyses, and systematic reviews, read in full by researchers trained to read them.

  2. Graded by evidence

    Every claim carries an evidence grade, so you can see how much weight any single point deserves.

  3. Weak spots left visible

    Where the research is thin or conflicted, the guides say so plainly. Some of it earns very little weight.

Common questions

Answers before you commit

The questions a careful reader should ask before trusting any source in this space, answered plainly.

Our guides are research summaries, not medical advice. They are compiled by researchers trained in reading and interpreting scientific literature. We always recommend consulting a qualified health professional before making any changes to your health regimen.