Follistatin-344
Animal studies onlyAlmost all the research is in animals. We do not know if the same thing happens in people.
Also called FS-344
Blocks a protein that limits muscle growth. Dramatic results in mice, no human trials.
Can a doctor prescribe this?
No. Pharmacies are not on record as being allowed to make this into a medicine.
The FDA has not approved this as a medicine.
Not approved and not on the compounding list.
Official status: Not on the 503A bulks list. Checked 2026-08-04.
Lab suppliers we list: 4
Doses used in research
Taken word for word from the studies and trials listed on this page. This is not a recommendation and not a dose for anyone to take.
No dosing information has been published in the research indexed here.
- The transgenic expression of human follistatin-344 increases skeletal muscle mass in pigs.
Animal study, rats or mice
Transgenic research · 2017
- Detection of black market follistatin 344.
Drug testing and analysis · 2020
- Central serous chorioretinopathy associated with high-dose follistatin-344: a retrospective case series.
International ophthalmology · 2020
- Detection of black market follistatin 344.
Drug testing and analysis · 2019
- Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance
Review of earlier work
Journal not recorded · 2026
- Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance.
Review of earlier work
Sports medicine (Auckland, N.Z.) · 2026
- Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance
Review of earlier work
Journal not recorded · 2025