Goal guide

Muscle & body composition

Most peptides here work by prompting the body to release more of its own growth hormone. Research ranges from one narrow FDA approval to small early studies.

Foundations first

No peptide replaces these. They drive most of the results.

Resistance trainingEnough total proteinRecovery daysPatience: body composition changes slowly

Peptides researched for muscle & body composition

Ranked from strongest to earliest-stage evidence.

GHRH analog

Tesamorelin

A growth-hormone-releasing hormone analog with a narrow FDA approval.

FDA-approved drug GHRH analog

Sermorelin

A short GHRH fragment with a long research history.

Human clinical trials Long-acting GHRH analog

CJC-1295

A modified GHRH analog engineered to last longer in the body.

Early human research Growth hormone secretagogue

Ipamorelin

A selective ghrelin-receptor agonist that stimulates growth hormone release.

Early human research

Educational content, not medical advice. Talk to a licensed provider before starting anything.