Peptides DB
Research-centric peptide and protocol reference hub
Muscle & body comp

Best peptides for Muscle Growth

Growth hormone secretagogues (Ipamorelin, CJC-1295, MK-677, Hexarelin, GHRP-2, GHRP-6), IGF-1 analogs (IGF-1 LR3, IGF-1 DES, MGF), and myostatin inhibitors (ACE-031, Follistatin-344) dominate the muscle-growth peptide literature. Each entry below links to the full research profile with study counts and trial-phase data.

17
peptides matched
Ranked by approved-study count
HGH (Somatropin): Healing 4.0, Muscle 5.0, Metabolic 4.0, Neuro 3.0, Sleep 2.0, Immune 3.0, Skin 4.0Healing & recovery — 4.0 / 5Muscle & body comp — 5.0 / 5Metabolic & appetite — 4.0 / 5Neuro & mood — 3.0 / 5Sleep & circadian — 2.0 / 5Inflammation & immune — 3.0 / 5Skin & aesthetics — 4.0 / 5
HGH (Somatropin)FDA Approved

Human Growth Hormone | Somatropin

HGH (somatropin) is recombinant human growth hormone, FDA-approved for pediatric and adult GH deficiency and several wasting and short-stature conditions; widely studied for body composition off-label.

11 studiesDominant effect: muscleFull profile →
Tesamorelin: Healing 1.0, Muscle 2.0, Metabolic 4.0, Neuro 1.0, Sleep 0.0, Immune 2.0, Skin 3.0Healing & recovery — 1.0 / 5Muscle & body comp — 2.0 / 5Metabolic & appetite — 4.0 / 5Neuro & mood — 1.0 / 5Inflammation & immune — 2.0 / 5Skin & aesthetics — 3.0 / 5
TesamorelinFDA Approved

GHRH Analog | Visceral Fat Reduction

### Tesamorelin Summary Tesamorelin is a synthetic peptide that functions as a growth hormone-releasing hormone (GHRH) analog, primarily investigated for its potential to reduce visceral fat in individuals with HIV-associated lipodystrophy. Its role in metabolic health and body composition continues to be explored in various clinical contexts.

10 studiesDominant effect: metabolicFull profile →
MK-677 (Ibutamoren): Healing 1.0, Muscle 4.0, Metabolic 3.0, Neuro 2.0, Sleep 3.0, Immune 1.0, Skin 2.0Healing & recovery — 1.0 / 5Muscle & body comp — 4.0 / 5Metabolic & appetite — 3.0 / 5Neuro & mood — 2.0 / 5Sleep & circadian — 3.0 / 5Inflammation & immune — 1.0 / 5Skin & aesthetics — 2.0 / 5

Ghrelin Receptor Agonist | Oral Growth Hormone Secretagogue

### Summary MK-677, also known as Ibutamoren, is a growth hormone secretagogue that has garnered attention for its potential effects on muscle mass and body composition. Research is ongoing to better understand its mechanisms and applications in various contexts, including its detection in biological samples.

10 studiesDominant effect: muscleFull profile →
Hexarelin: Healing 2.0, Muscle 4.0, Metabolic 3.0, Neuro 3.0, Sleep 1.0, Immune 2.0, Skin 1.0Healing & recovery — 2.0 / 5Muscle & body comp — 4.0 / 5Metabolic & appetite — 3.0 / 5Neuro & mood — 3.0 / 5Sleep & circadian — 1.0 / 5Inflammation & immune — 2.0 / 5Skin & aesthetics — 1.0 / 5
HexarelinWell Studied

Examorelin | Synthetic Growth Hormone Secretagogue

### Hexarelin Summary Hexarelin is a synthetic hexapeptide that belongs to the growth hormone secretagogue (GHS) class, known for its ability to stimulate growth hormone release from the pituitary gland. It has been investigated for its potential therapeutic applications in various conditions, including muscle wasting and age-related decline in growth hormone levels.

9 studiesDominant effect: muscleFull profile →
GHRP-6: Healing 2.0, Muscle 4.0, Metabolic 3.0, Neuro 2.0, Sleep 1.0, Immune 2.0, Skin 3.0Healing & recovery — 2.0 / 5Muscle & body comp — 4.0 / 5Metabolic & appetite — 3.0 / 5Neuro & mood — 2.0 / 5Sleep & circadian — 1.0 / 5Inflammation & immune — 2.0 / 5Skin & aesthetics — 3.0 / 5
GHRP-6Well Studied

Growth Hormone Releasing Peptide-6 | Hexapeptide GHS

GHRP-6 is a synthetic hexapeptide growth hormone secretagogue that stimulates pituitary GH release via the ghrelin receptor and is widely studied as a research GHS.

9 studiesDominant effect: muscleFull profile →
IGF-1 DES (Des(1-3) IGF-1): Healing 3.0, Muscle 5.0, Metabolic 2.0, Neuro 1.0, Sleep 0.0, Immune 2.0, Skin 3.0Healing & recovery — 3.0 / 5Muscle & body comp — 5.0 / 5Metabolic & appetite — 2.0 / 5Neuro & mood — 1.0 / 5Inflammation & immune — 2.0 / 5Skin & aesthetics — 3.0 / 5

Truncated IGF-1 Analog | Localized Muscle Growth

IGF-1 DES (Des(1-3) IGF-1) is a truncated IGF-1 analog studied for localized muscle growth and tissue repair, with reduced IGFBP binding and higher local receptor activity.

8 studiesDominant effect: muscleFull profile →
Showing the 6 most-studied of 17 matches

Related reading

Dosing for approved agents comes from the label, not from this site. If you are working out injection volumes, the reconstitution calculator converts mg per vial into syringe units, and how to use peptides covers storage and handling. Neither is a recommendation to use anything.

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Medical disclaimer

Rankings reflect how much indexed research exists, not how safe or effective anything is for you. Nothing here is medical advice. Most peptides on this site are not approved drugs.