---
title: "Knowledge base"
url: https://humanpeptides.fyi/knowledge-base
site: humanpeptides.fyi
last_reviewed: 2026-10-12
---


# Knowledge base

> humanpeptides.fyi makes no claims of its own. Every benefit, side effect, nickname and quote reports what a cited source says, with its link. Not medical advice.

Plain explainers built only from this site's own sourced data: how evidence is labelled, regulatory status line by line, compound families, and a side-by-side compare.

- [How every statement here is documented](https://humanpeptides.fyi/knowledge-base/how-statements-are-documented): How a statement gets onto this index: each benefit, side effect and quote links its source, quotes are word for word, and each of 48 compounds carries an evidence label and a recorded regulatory statement with its source. humanpeptides.fyi makes no claims of its own. Every benefit, side effect, nickname and quote reports what a cited source says, with its link.
- [How to read a source type](https://humanpeptides.fyi/knowledge-base/source-types): What each of the 10 source-type labels means, how many of the 693 cited pages in the index carry it, and example websites, ordered from most to least formal. A citation is not an endorsement.
- [From cell dish to clinic: study types](https://humanpeptides.fyi/knowledge-base/study-types): How to read the kinds of studies the humanpeptides.fyi index cites, from in vitro and animal work to randomized trials and meta-analyses, using the glossary's own definitions.
- [Evidence labels explained](https://humanpeptides.fyi/knowledge-base/evidence-labels): How the 5 evidence labels on humanpeptides.fyi work, what each one means, and which of the 48 compounds carries each.
- [Regulatory status, line by line](https://humanpeptides.fyi/knowledge-base/regulatory-status): The regulatory statement recorded for each of 48 compounds, verbatim, with the source link for each. Statements can change; the source is the authority.
- [Compound families](https://humanpeptides.fyi/knowledge-base/families): How the 48 compounds in this index group into 9 families, with the evidence label each carries.
- [Repair & Recovery family](https://humanpeptides.fyi/knowledge-base/families/repair): 4 compounds listed under Repair & Recovery in this index, with the evidence label each carries and the goals discussed.
- [Weight & Metabolic family](https://humanpeptides.fyi/knowledge-base/families/metabolic): 6 compounds listed under Weight & Metabolic in this index, with the evidence label each carries and the goals discussed.
- [Growth Hormone Axis family](https://humanpeptides.fyi/knowledge-base/families/gh-axis): 9 compounds listed under Growth Hormone Axis in this index, with the evidence label each carries and the goals discussed.
- [Skin, Hair & Tan family](https://humanpeptides.fyi/knowledge-base/families/aesthetic): 6 compounds listed under Skin, Hair & Tan in this index, with the evidence label each carries and the goals discussed.
- [Mind & Mood family](https://humanpeptides.fyi/knowledge-base/families/mind): 5 compounds listed under Mind & Mood in this index, with the evidence label each carries and the goals discussed.
- [Longevity & Mitochondria family](https://humanpeptides.fyi/knowledge-base/families/longevity): 6 compounds listed under Longevity & Mitochondria in this index, with the evidence label each carries and the goals discussed.
- [Immune & Gut family](https://humanpeptides.fyi/knowledge-base/families/immune): 4 compounds listed under Immune & Gut in this index, with the evidence label each carries and the goals discussed.
- [Sexual Health & Hormones family](https://humanpeptides.fyi/knowledge-base/families/sexual): 3 compounds listed under Sexual Health & Hormones in this index, with the evidence label each carries and the goals discussed.
- [Lipotropics & Nutrients family](https://humanpeptides.fyi/knowledge-base/families/nutrient): 5 compounds listed under Lipotropics & Nutrients in this index, with the evidence label each carries and the goals discussed.
- [Compound database](https://humanpeptides.fyi/knowledge-base/database): A structured table of all 48 compounds in this index: other names, type, family, evidence label, regulatory statement and goals discussed, from the site's own cited data.
- [Compare two compounds](https://humanpeptides.fyi/knowledge-base/compare): Pick two compounds and see type, family, evidence label, goals discussed and regulatory statement side by side, from this site's cited data.

Also: [Glossary](https://humanpeptides.fyi/glossary), [Browse by goal](https://humanpeptides.fyi/objectives), [How this index is made](https://humanpeptides.fyi/method).