Peptibase
Hormonal

Follistatin

Also known as: FST, FS344, FS315

Clinical Trials
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Key Facts: Follistatin

Category
Hormonal
FDA Status
Not FDA Approved
Clinical Status
Investigational - Gene therapy trials
Administration
Subcutaneous injection
Typical Dose
Limited community data available
Frequency
See research protocols
Evidence Level
Human Trials
Duration
Variable protocols
Also Known As
FST, FS344, FS315

What to Expect

A naturally occurring protein that inhibits myostatin. Studied for muscle growth and dystrophy conditions.

Mechanism of Action

Follistatin binds and neutralizes myostatin, a protein that limits muscle growth. By blocking myostatin signaling, it allows increased muscle development. Also binds activins and affects FSH release.

Research Summary

Animal studies show dramatic muscle growth with follistatin overexpression. Gene therapy trials ongoing for muscular dystrophy. Research peptide versions have variable efficacy.

Clinical Status:Investigational - Gene therapy trials
Trial Progress:Preclinical
Pre
I
II
III
IV
FDA

Dosing Information

Human Trials·Human studies conducted, not FDA approved

Typical Dosingⓘ

Community experience

Common Dose

Limited community data available

Range

See research dosing

Frequency

See research protocols

Research Dosingⓘ

Scientific studies

Doses from research use

Duration

Variable protocols

Administration

Subcutaneous injection

Timing & Administration

Best Time to Take

Morning

Once daily

Food Recommendation

With or without food

Why This Timing?

Follistatin inhibits myostatin. Consistent daily timing supports stable levels.

Possible Side Effects

Not everyone experiences these effects. Individual responses vary based on dosage, duration, and personal factors.

  • ●Muscle soreness
  • ●Injection site reactions
  • ●Flu-like symptoms
  • ●Slight LDL cholesterol increase
  • ●Potential FSH suppression
  • ●Product quality concerns (black market)

References

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Educational Information Only

This information is provided for educational purposes only and is not intended as medical advice. Always consult with qualified healthcare providers before making any decisions about peptides or other substances. The protocols listed reflect doses observed in research studies, not recommendations.

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