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Follistatin 344 peptide: Metabolic / Longevity research guide

In short: Follistatin 344 (FST344) is the 344-residue follistatin isoform, studied in primate and rodent work on muscle-directed gene delivery and myostatin antagonism. It is studied in preclinical (cell and animal) research and is supplied strictly for laboratory use, not for human or clinical use.

Not medical advice. Follistatin 344 is a research compound. This guide does not provide dosing, diagnosis, therapy recommendations, or claims about effects in humans.

Follistatin 344 at a glance

Compound type

Research peptide

Research category

Metabolic / Longevity

Also known as

FST344, FST-344, FS344, Follistatin-344, follistatin 344 isoform

Evidence context

Preclinical / research use only

Regulatory status

Not an approved medicine. Supplied as a research compound

Last reviewed

26 October 2026

What to know first

Compound Follistatin 344 Research class Metabolic / Longevity Available pack sizes 10 × 1 mg Storage Lyophilised powder: store in freezer (−20 °C). Reconstituted: refrigerate 1–6 °C, away from sunlight.

Details and limits sit in the sections below. Research use only. No unsupported scientific claims are added here.

What Follistatin 344 is

Follistatin 344 is the 344-residue follistatin isoform, best known from primate and rodent work on muscle-directed gene delivery.

One-paragraph overview from our research datasheet. Still scientific, but faster to read than the full mechanism list below.

Follistatin 344 (FST344) is the 344-residue follistatin isoform, studied in primate and rodent work on muscle-directed gene delivery and myostatin antagonism.

Research contexts

Peer-reviewed papers discuss Follistatin 344 in specific lab settings. The points below reflect research questions, not health claims.

Research vs. personal use: Literature describes experiments in cells and animals. That is distinct from real-world use. Our products are for laboratory research only.

Typical study contexts

Mitochondrial stress, NAD+/redox biology and nutrient-sensing pathways.

Enzyme activity, gene expression or endurance-style animal readouts.

The 344-residue follistatin isoform, distinct from the shorter follistatin 288 isoform.

Cited primate work used an AAV1 vector carrying FS344 in macaque muscle, not the peptide supplied here.

Reference material for follistatin and myostatin pharmacology in preclinical research.

1 mg vial; sealed 10-vial pack or one-vial sample.

Why Metabolic / Longevity research matters

Researchers study these compounds for mitochondrial function and cellular energy stress. Ageing and metabolic disease models are common.

Mechanisms (technical review)

Our datasheet lists mechanistic themes from preclinical work. These are research endpoints, not health claims.

The 344-residue follistatin isoform, distinct from the shorter follistatin 288 isoform

Cited primate work used an AAV1 vector carrying FS344 in macaque muscle, not the peptide supplied here

Reference material for follistatin and myostatin pharmacology in preclinical research

1 mg vial; sealed 10-vial pack or one-vial sample

Lab handling & preparation

Storage: Lyophilised powder: store in freezer (−20 °C). Reconstituted: refrigerate 1–6 °C, away from sunlight.. See the storage guide.

Published pharmacokinetic context: Laboratory research material. No amount, schedule or administration guidance is published or recommended on this page.

Purity check: Use the COA reading guide and the published Certificates of Analysis (no current certificate is listed for Follistatin 344 yet).

Common Questions People Are Asking

What does the research actually say about Follistatin 344?

This guide summarises peer-reviewed preclinical literature: experiments in cells and animals, not human clinical trials. Scientists study this peptide in specific research models. Those findings do not automatically transfer to real-world outcomes.

Is this page medical advice? Can I use Follistatin 344 for my health?

No, and no. This article is educational only. We do not provide dosing, medical recommendations, or health claims. Our products are sold strictly for laboratory research, not for personal use of any kind.

Where do I find Follistatin 344 specs, purity certificates and pricing?

Open the shop listing via “View product details.” There you will see concentration, purity grade, and available SKUs with current pricing. No current Certificate of Analysis is published for Follistatin 344 yet; published certificates are listed at /coa.

Related peptide guides

Other compounds researchers often read about alongside Follistatin 344.

Tesamorelin: HGH / Somatropin research guide

HGH 191 AA: HGH / Somatropin research guide

MOTS-C: Metabolic / Longevity research guide

5-Amino-1MQ: Metabolic / Longevity research guide

Epitalon: Metabolic / Longevity research guide

Continue Follistatin 344 research

Analytical evidence, comparisons and current research for this compound. Research use only.

Research area Tissue repair & recovery research The tissue-repair research area - cytoprotective and growth-factor peptides studied in wound healing, tendon, muscle and gut-lining… Explore the research area →

Scientific sources & further reading

Primary literature and registries for Follistatin 344, plus mainstream coverage of the peptide category. Research use only - not medical advice.

Databases & literature:

PubMed: peer-reviewed literature on Follistatin 344

ClinicalTrials.gov: registered studies on Follistatin 344

Follistatin 344: Wikipedia (search)

Peptides in the news:

WebMD: consumer health reference

BBC News: Health

CNN Health: “Peptides: what to know about the wellness trend”

Sky News: “Can peptides make America healthy again?”

Sky News: “Inside the exploding US peptides craze” (video)

Sky News Australia: “Black market peptide trade explodes as influencers fuel uptick in use”

Sky News Australia: “Backyard peptide boom sparks alarm” (video)

Sky News Australia: “Oprah reveals struggle with shame of weight-loss drugs”

Ready to order? View full product specs

Access concentration, batch info, variants, and current pricing on our shop.

Also known as: FST344, FST-344, FS344, Follistatin-344, follistatin 344 isoform

PRECISION. PURITY. PERFORMANCE.

Research peptides. Third-party Certificates of Analysis (Janoshik Analytical & Freedom Diagnostics) are published on the website. Supplied strictly for laboratory research use.

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