Fs344 Bodybuilding 1mg/ Vial Injection

Fs344 Bodybuilding 1mg/ Vial Injection
Peptide Follistatin 344 F344 1mg Polypeptides Fst 344 Human Growth Peptides with 99% Purity
Product Details

Peptides Follistatin 344

Name: Follistatin 344

Synonyms: FST, FS, Activin-binding protein.

CAS: 129954-34-3

Molecular Formula: C33h57n11o9

Molecular Weight: 751.9

Purity (by HPLC): 99.0%

Appearance: Sterile Filtered White Lyophilized (Freeze-Dried)

What is Peptides Follistatin 344

Follistatin is fascinating protein that can increase muscle mass beyond natural potential by suppressing myostatin. Scientists first identified follistatin while examining porcine (re: pig) follicular fluid in the ovaries. Follistatin is naturally found in the skeletal muscle of almost all mammals with advanced or developed characteristics, such as humans, rodents, and cows. Follistatin is high in the non-essential amino acid cystine but unlike most proteins discussed in the fitness world, follistatin has carbohydrates attached to it.


Follistatin, specifically Follistatin 344 (FS344), quickly gained popularity in the bodybuilding community as a potential supplement to rapidly increase lean tissue mass. Another protein, follistatin-related gene (FLRG) acts on similar pathways as FS344 regarding its muscle building properties. Increased lean tissue mass could give a bodybuilder an advantage in a competitive setting and be the differentiating factor between first and second place.

Follistatin and Muscle Growth:


Follistatin works by binding to and inhibiting transforming growth factor-β (TGF-β) peptides such as myostatin which is responsible for regulating and limiting muscle growth. It's also worth pointing out that myostatin may have a regulatory role in skeletal muscle fibrosis; too much myostatin can impair tissue function and cause chronic disease in vital organs, tissues, and bone marrow.


In additional to suppressing the degenerative properties of myostatin, follistatin also suppresses the pituitary gland synthesis and secretion of follicle-stimulating hormone (FSH). High FSH levels in men may indicate that testicles are not functioning correctly; this condition limits muscle growth, recovery, and normal hormonal function.However, FSH levels that are too low can also negatively impact health and reproductive capabilities.

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