---
title: "Peptides discussed for Muscle & Tone"
url: https://humanpeptides.fyi/objectives/muscle
site: humanpeptides.fyi
last_reviewed: 2026-10-11
---


# Muscle & Tone

> humanpeptides.fyi makes no claims of its own. Every statement below reports what a cited source says, with its link. Not medical advice.

Muscle & Tone: 12 peptides and related compounds in this index have at least one researched benefit that sources link to muscle & tone. Those with approved or trial-backed evidence: HGH (Somatropin), L-carnitine, SS-31.

| Peptide | Evidence label | What sources discuss for this goal |
|---|---|---|
| [HGH (Somatropin)](https://humanpeptides.fyi/peptides/hgh) | Approved (specific use) | Leaner body composition |
| [BPC-157](https://humanpeptides.fyi/peptides/bpc-157) | Preclinical | Tendon and bone repair, mostly animal |
| [IGF-1 LR3](https://humanpeptides.fyi/peptides/igf-1-lr3) | Preclinical | Muscle growth, no human data; Growth in catabolic rats |
| [L-carnitine](https://humanpeptides.fyi/peptides/l-carnitine) | Approved (specific use) | Exercise recovery |
| [SS-31](https://humanpeptides.fyi/peptides/ss-31) | Approved (specific use) | Muscle strength in Barth syndrome |
| [Sermorelin](https://humanpeptides.fyi/peptides/sermorelin) | Early human | Lean mass gain, small study |
| [5-Amino-1MQ](https://humanpeptides.fyi/peptides/5-amino-1mq) | Preclinical | Aged muscle regeneration, mice |
| [MOTS-c](https://humanpeptides.fyi/peptides/mots-c) | Preclinical | Exercise capacity, animal |
| [CJC-1295 with DAC](https://humanpeptides.fyi/peptides/cjc-1295-dac) | Early human | Sleep, muscle and fat, unproven claims |
| [CJC-1295 without DAC](https://humanpeptides.fyi/peptides/cjc-1295-no-dac) | Preclinical | Body composition, anecdotal |
| [Ipamorelin](https://humanpeptides.fyi/peptides/ipamorelin) | Preclinical | Sleep and body composition, anecdotal |
| [CJC-1295 + Ipamorelin](https://humanpeptides.fyi/peptides/cjc-1295-ipamorelin) | Unstudied | Body recomposition, anecdotal |

## Questions about muscle & tone

### Which peptides are discussed for muscle & tone?

HGH (Somatropin), BPC-157, IGF-1 LR3, L-carnitine, SS-31, Sermorelin, 5-Amino-1MQ, MOTS-c, CJC-1295 with DAC, CJC-1295 without DAC, Ipamorelin, CJC-1295 + Ipamorelin.

### Which have the strongest evidence for muscle & tone?

Labelled approved or trial-backed: HGH (Somatropin), L-carnitine, SS-31. Approval covers specific uses only.

### Is any of this a recommendation?

No. humanpeptides.fyi makes no claims of its own. Each entry reports what cited sources say, with links. Talk to a licensed clinician.