Growth Hormone · Myostatin / activin pathway

Follistatin-344Follistatin isoform discussed in activin/myostatin research.

A protein studied in myostatin/activin pathway inhibition and skeletal muscle biology research.

Also known as FST-344; FS344. CAS No. 129653-61-8.

3 papers·Research / unapproved·COA Unverified·0 saved

Lowest /mg now

$70.00

Pure Rawz

$70.00–$139.99 range

Scientific name

Follistatin isoform discussed in activin/myostatin research.

CAS No.

129653-61-8

Category

Growth Hormone

US status

Research only

Evidence last verified May 9, 2026

2 results

Product	Vendor	Size	Price	$/mg	Purity	COA
Follistatin-344	CPure Rawz	1mg	$74	$74/mg	99%	Finnrick mixed	Visit
Follistatin-344	CPure Rawz	2mg	$139.99	$70/mg	99%	Finnrick mixed	Visit
Follistatin-344	CPure Rawz	5mg	$396.54	$79.31/mg	99%	Finnrick mixed	Visit
Follistatin-344	BSwiss Chems	1mg	$139.99	$139.99/mg		Finnrick14d	Visit

Scientific Details

Quick Facts

Activin/myostatin signaling

Gray-market identity and purity issues are common

Mechanism of Action

Activin binding

Myostatin pathway modulation

Key Pathways

Myostatin signaling

Activin signaling

Muscle growth regulation

Scientific Research

Year	Title / Journal	Type	Cites
2015	Mendell 2015 — Follistatin Gene Therapy Trial for Becker Muscular Dystrophy Molecular Therapy	Clinical Trial	326
2015	Mendell 2015 - Phase 1/2a Follistatin Gene Therapy Trial for Becker Muscular Dystrophy Molecular Therapy	Clinical Trial	326
2009	Kota 2009 - Follistatin Gene Delivery Enhances Muscle Growth and Strength in Nonhuman Primates Science Translational Medicine	Preclinical	233

Showing 3 of 3 papers

Regulatory Status

USResearch only

EUNot approved

UKResearch only

AUResearch only

Regulatory status may change. Always verify current regulations in your jurisdiction before purchase.