---
title: "Evidence labels explained"
url: https://humanpeptides.fyi/knowledge-base/evidence-labels
site: humanpeptides.fyi
last_reviewed: 2026-10-12
---

# Evidence labels explained

Every one of the 48 entries on humanpeptides.fyi carries one of 5 evidence labels. A label describes the strength of the cited evidence for the compound as a whole. It is not advice, and listing a compound is not endorsement.

## Approved (specific use)

Approved by the FDA (or a major regulator) for at least one specific use. Approval covers that use only, not the other benefits listed.

9 compounds carry this label.

- [L-carnitine](https://humanpeptides.fyi/peptides/l-carnitine)
- [Semaglutide](https://humanpeptides.fyi/peptides/semaglutide)
- [HGH (Somatropin)](https://humanpeptides.fyi/peptides/hgh)
- [HCG](https://humanpeptides.fyi/peptides/hcg)
- [PT-141](https://humanpeptides.fyi/peptides/pt-141)
- [Tesamorelin](https://humanpeptides.fyi/peptides/tesamorelin)
- [Tirzepatide](https://humanpeptides.fyi/peptides/tirzepatide)
- [SS-31](https://humanpeptides.fyi/peptides/ss-31)
- [Vitamin B12](https://humanpeptides.fyi/peptides/vitamin-b12)

## Trial-backed

Larger randomized human trials exist, positive or negative, but no US approval for the uses discussed.

5 compounds carry this label.

- [AOD9604](https://humanpeptides.fyi/peptides/aod9604)
- [Cagrilintide](https://humanpeptides.fyi/peptides/cagrilintide)
- [Glutathione](https://humanpeptides.fyi/peptides/glutathione)
- [Thymosin Alpha-1](https://humanpeptides.fyi/peptides/thymosin-alpha-1)
- [Retatrutide](https://humanpeptides.fyi/peptides/retatrutide)

## Early human

Small, short, old, unblinded or single-group human studies.

14 compounds carry this label.

- [CJC-1295 with DAC](https://humanpeptides.fyi/peptides/cjc-1295-dac)
- [GHK-Cu](https://humanpeptides.fyi/peptides/ghk-cu)
- [DSIP](https://humanpeptides.fyi/peptides/dsip)
- [Epithalon](https://humanpeptides.fyi/peptides/epithalon)
- [VIP](https://humanpeptides.fyi/peptides/vip)
- [Melanotan II](https://humanpeptides.fyi/peptides/melanotan-ii)
- [NAD+](https://humanpeptides.fyi/peptides/nad-plus)
- [Sermorelin](https://humanpeptides.fyi/peptides/sermorelin)
- [Snap-8](https://humanpeptides.fyi/peptides/snap-8)
- [Kisspeptin](https://humanpeptides.fyi/peptides/kisspeptin)
- [Selank](https://humanpeptides.fyi/peptides/selank)
- [Semax](https://humanpeptides.fyi/peptides/semax)
- [Thymalin](https://humanpeptides.fyi/peptides/thymalin)
- [ARA-290](https://humanpeptides.fyi/peptides/ara-290)

## Preclinical

Mostly cell and animal studies. Human effects unknown.

10 compounds carry this label.

- [AHK-Cu](https://humanpeptides.fyi/peptides/ahk-cu)
- [BPC-157](https://humanpeptides.fyi/peptides/bpc-157)
- [TB-500](https://humanpeptides.fyi/peptides/tb-500)
- [CJC-1295 without DAC](https://humanpeptides.fyi/peptides/cjc-1295-no-dac)
- [Ipamorelin](https://humanpeptides.fyi/peptides/ipamorelin)
- [FOXO4-DRI](https://humanpeptides.fyi/peptides/foxo4-dri)
- [5-Amino-1MQ](https://humanpeptides.fyi/peptides/5-amino-1mq)
- [IGF-1 LR3](https://humanpeptides.fyi/peptides/igf-1-lr3)
- [MOTS-c](https://humanpeptides.fyi/peptides/mots-c)
- [KPV](https://humanpeptides.fyi/peptides/kpv)

## Unstudied

No direct studies of this product or blend. Anecdote and component data only.

10 compounds carry this label.

- [BPC-157 + TB-500](https://humanpeptides.fyi/peptides/bpc-157-tb-500)
- [CJC-1295 + Ipamorelin](https://humanpeptides.fyi/peptides/cjc-1295-ipamorelin)
- [GLOW](https://humanpeptides.fyi/peptides/glow)
- [KLOW](https://humanpeptides.fyi/peptides/klow)
- [Lipo-C](https://humanpeptides.fyi/peptides/lipo-c)
- [Lemon Bottle](https://humanpeptides.fyi/peptides/lemon-bottle)
- [Adamax](https://humanpeptides.fyi/peptides/adamax)
- [Semax + Selank](https://humanpeptides.fyi/peptides/semax-selank)
- [MIC](https://humanpeptides.fyi/peptides/mic)
- [Tesamorelin + Ipamorelin](https://humanpeptides.fyi/peptides/tesamorelin-ipamorelin)

## Where to read more

- [How evidence labels are assigned](https://humanpeptides.fyi/method#evidence-tiers)
- [Glossary](https://humanpeptides.fyi/glossary#evidence-tiers)

> 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.