Muscle and body composition

What human evidence and regulatory status actually support.

Old sermorelin products and tesamorelin's narrow approval do not support the broader claims made for adult growth-hormone “optimization” stacks, including more muscle, better sleep or faster recovery.

Source-based editorial review; independent clinical review pending. Read the sources.

Evidence by peptide

• Sermorelin: Sermorelin is a growth-hormone-releasing hormone analog. The former FDA-approved Geref products were discontinued for reasons other than safety or effectiveness, but discontinuation does not create approval for adult anti-aging, muscle gain, sleep, or fat-loss treatment. No currently marketed FDA-approved sermorelin product is identified here. [1,2]

Common Questions

• Does this page recommend a dose or stack?

  No. Trial protocols describe research, and approved-product instructions apply only to the named formulation and labeled population.

• Can animal, cell or mechanistic findings prove a human benefit?

  No. They can justify further research but cannot be rewritten as a demonstrated outcome in people.

Sources and study limits

1. Determination That GEREF (Sermorelin Acetate) Products Were Not Withdrawn for Reasons of Safety or Effectiveness U.S. Food and Drug Administration (2013)
2. Unapproved Drugs U.S. Food and Drug Administration
3. Egrifta SV prescribing information U.S. Food and Drug Administration

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Educational evidence summary. FDA approval, investigational status, and compounding are separate categories. Use the current label and a licensed clinician for patient-specific decisions.

vialprep research · Sources: PubMed, FDA, peer-reviewed trials · How we verify