Recovery & Repair · Recovery & Repair peptide (research)
Follistatin-344
- Drug class
- Recovery & Repair peptide (research)
- Status
- Compounded (503A)
- Also known as
- follistatin, fst-344, fs-344, myostatin inhibitor, folistatin
- Reviewed
- 2026-06-01 · Dr. Ana Lisa Carr, MD
What Follistatin-344 is studied for
- Muscle preservation (research)
- Myostatin inhibition (research)
- Sarcopenia research (research)
Mechanism of action
Follistatin-344 is being studied in the recovery & repair category. Myostatin inhibitor studied for lean muscle preservation in midlife. Mechanism of action varies by study model; refer to the kindr clinical library for a deeper writeup.
Frequently asked questions
What is Follistatin-344?
Follistatin-344 is a recovery & repair peptide. Myostatin inhibitor studied for lean muscle preservation in midlife.
What is Follistatin-344 studied for?
Published research has examined Follistatin-344 for muscle preservation, myostatin inhibition, sarcopenia research. Human clinical evidence varies by indication.
Is Follistatin-344 FDA-approved?
No. Follistatin-344 is not FDA-approved for the indications listed. It is available compounded by 503A pharmacies under clinician supervision, or for international research use only on this catalog.
How is Follistatin-344 used in research?
Protocols vary by study. Follistatin-344 is typically administered subcutaneously in research settings. No validated human therapeutic dose exists outside FDA-approved indications.
What are the known risks?
Long-term human safety data for Follistatin-344 is limited. Theoretical risks vary by mechanism. Any human use should be supervised by a licensed clinician.