What is the difference between Follistatin 344 and Myostatin Propeptide?

Follistatin 344: Binds and neutralizes myostatin (GDF-8) and activin; removes the natural brake on muscle growth allowing supraphysiological hypertrophy Myostatin Propeptide: Endogenous N-terminal fragment of myostatin precursor; binds and neutralizes mature myostatin (GDF-8); naturally produced to regulate the extent of muscle inhibition

Is Follistatin 344 FDA approved?

Follistatin 344 is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

Is Myostatin Propeptide FDA approved?

Myostatin Propeptide is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is Follistatin 344 administered in research settings?

In research settings, Follistatin 344 is typically administered via the intramuscular route. PeptideBase does not provide dosing or administration instructions.

How is Myostatin Propeptide administered in research settings?

In research settings, Myostatin Propeptide is typically administered via the subcutaneous or intramuscular routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Follistatin 344 vs Myostatin Propeptide

Peptide Comparison

Follistatin 344 vs Myostatin Propeptide

Name: Follistatin 344 vs Myostatin Propeptide — Per-mg Price Comparison
Creator: PeptideBase
License: https://peptidebase.io/terms

Both are Muscle & Myostatin peptides.

Follistatin 344

FST-344

PerformanceNot EvaluatedResearch Only

Half-life: ~24-36 hours

14 providers listed

Full Follistatin 344 profile →

Myostatin Propeptide

GDF-8 propeptide

PerformanceNot EvaluatedResearch Only

Half-life: Unknown

1 providers listed

Full Myostatin Propeptide profile →

Bottom line

Follistatin 344 carries stronger published evidence (RCT, 2 key studies) than Myostatin Propeptide (Animal, 2); both are research compounds.

Quick Verdict

Follistatin 344

Evidence

Emerging Clinical

Half-life

~24-36 hours

Myostatin Propeptide

Evidence

Preclinical

Half-life

Unknown

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Follistatin 344
More provider options (14 vs 1)	Follistatin 344

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Follistatin 344

Myostatin Propeptide

Mechanism Family

Muscle & Myostatin

Half-life

~24-36 hours

Unknown

FDA Status

not evaluated

Admin Routes

intramuscular

subcutaneous, intramuscular

Availability

Research Only

Providers

14 listed

1 listed

Avail. Notes

Myostatin inhibitor. No FDA approval. Gene therapy forms in early trials but recombinant protein is a research chemical. WADA prohibited. No NDA or IND for peptide form.

N-terminal propeptide of myostatin that inhibits myostatin signalling. No FDA approval, no NDA or IND. Research tool compound. Not on any FDA list. No active clinical development program.

Research Evidence

Follistatin 344

Emerging ClinicalRCT · 2 key studies · most recent 2017

Myostatin Propeptide

PreclinicalAnimal · 2 key studies · dated evidence base — most recent 2004

Research Citations

Follistatin 344

Animal2017 · Transgenic Research

The transgenic expression of human follistatin-344 increases skeletal muscle mass in pigs

RCT2015 · Molecular Therapy

A phase 1/2a follistatin gene therapy trial for Becker muscular dystrophy

Myostatin Propeptide

Animal2004 · Proceedings of the National Academy of Sciences

Activation of latent myostatin by the BMP-1/tolloid family of metalloproteinases

Animal2001 · Proceedings of the National Academy of Sciences

Regulation of myostatin activity and muscle growth

About Follistatin 344

Binds and neutralizes myostatin (GDF-8) and activin; removes the natural brake on muscle growth allowing supraphysiological hypertrophy

Research Areas

myostatin and activin A neutralization — dual TGF-β inhibitionskeletal muscle hypertrophy in transgenic animal modelssatellite cell activation and muscle protein synthesis reliefgene therapy context: Becker MD phase 1/2a trial safety established

About Myostatin Propeptide

Endogenous N-terminal fragment of myostatin precursor; binds and neutralizes mature myostatin (GDF-8); naturally produced to regulate the extent of muscle inhibition

Research Areas

myostatin inhibitionmuscle hypertrophystrength gainlean mass increase

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Follistatin 344

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Myostatin Propeptide

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Price (per mg)

Follistatin 344

$132.12/mg

$76.81 – $139.99 range

9 vendors

View price index →Find providers →

Myostatin Propeptide

Not enough vendor pricing yet.

Find Providers

Where to source these peptides

Providers offering

Follistatin 344

14 listed

Browse directory →

Providers offering

Myostatin Propeptide

1 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More Muscle & Myostatin Comparisons

Browse all peptides →

Educational research tools — not medical advice.

Cite this page

Data last updated July 20, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). Follistatin 344 vs Myostatin Propeptide — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/follistatin-344/myostatin-propeptide

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