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Alkaline Peptides
F-344 1mg
F-344 1mg
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The myostatin counterweight — the protein studied for releasing the brakes on muscle growth. 1mg vial.
Follistatin-344 (F-344) is a naturally occurring glycoprotein best known in research as a potent binder and neutralizer of myostatin — the signal that limits muscle growth.
What Follistatin-344 is
- A 344-amino-acid isoform of follistatin, a natural regulatory glycoprotein
- Binds and neutralizes members of the TGF-beta family, most notably myostatin and activin
- A key tool molecule in muscle-biology and regenerative research
Research suggests Follistatin-344 may help with
- Muscle-growth biology — myostatin-inhibition models
- Muscle regeneration — satellite-cell activation studies
- TGF-beta signaling — activin/inhibin pathway research
- Reproductive biology — FSH regulation studies (its original discovery context)
Research areas at a glance
| Research area | What studies explore |
|---|---|
| Myostatin binding | Neutralizing the muscle-growth "brake" in models |
| Muscle regeneration | Satellite-cell and fiber-growth studies |
| TGF-beta family | Activin and related signaling pathways |
How Follistatin-344 is studied to work
1. Myostatin sequestration
- Binds myostatin directly, preventing it from activating its receptor
- With the brake signal blocked, muscle-growth pathways run less inhibited in studies
2. Activin/TGF-beta modulation
- Also binds activin, linking it to broader TGF-beta-family research
👉 Think: removing a limiter, not adding an accelerator

Product specifications
| Specification | Detail |
|---|---|
| Vial size | 1mg Follistatin-344 |
| Form | Lyophilized (freeze-dried) powder |
| Storage | Cool, dry place away from light; refrigerate after reconstitution |
| Intended use | Laboratory research only — not for human consumption |
Summary
In research settings, Follistatin-344 is studied for:
- Myostatin-neutralizing glycoprotein
- Muscle-growth and regeneration research
- TGF-beta family signaling studies
Follistatin-344 is NOT a muscle-building drug — it is studied as a growth-signal optimizer.
Most molecules push the accelerator. This one is studied for lifting the brake — a fundamentally different research question.
F-344 1mg — limited research stock. Secure yours today.
For laboratory research only. This product is not approved for human consumption, therapeutic use, or diagnostic applications. It has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease. Nothing on this page is medical advice.
Product Details
Product Details
The myostatin counterweight — the protein studied for releasing the brakes on muscle growth. 1mg vial.
Follistatin-344 (F-344) is a naturally occurring glycoprotein best known in research as a potent binder and neutralizer of myostatin — the signal that limits muscle growth.
What Follistatin-344 is
- A 344-amino-acid isoform of follistatin, a natural regulatory glycoprotein
- Binds and neutralizes members of the TGF-beta family, most notably myostatin and activin
- A key tool molecule in muscle-biology and regenerative research
Research suggests Follistatin-344 may help with
- Muscle-growth biology — myostatin-inhibition models
- Muscle regeneration — satellite-cell activation studies
- TGF-beta signaling — activin/inhibin pathway research
- Reproductive biology — FSH regulation studies (its original discovery context)
Research areas at a glance
| Research area | What studies explore |
|---|---|
| Myostatin binding | Neutralizing the muscle-growth "brake" in models |
| Muscle regeneration | Satellite-cell and fiber-growth studies |
| TGF-beta family | Activin and related signaling pathways |
How Follistatin-344 is studied to work
1. Myostatin sequestration
- Binds myostatin directly, preventing it from activating its receptor
- With the brake signal blocked, muscle-growth pathways run less inhibited in studies
2. Activin/TGF-beta modulation
- Also binds activin, linking it to broader TGF-beta-family research
👉 Think: removing a limiter, not adding an accelerator

Product specifications
| Specification | Detail |
|---|---|
| Vial size | 1mg Follistatin-344 |
| Form | Lyophilized (freeze-dried) powder |
| Storage | Cool, dry place away from light; refrigerate after reconstitution |
| Intended use | Laboratory research only — not for human consumption |
Summary
In research settings, Follistatin-344 is studied for:
- Myostatin-neutralizing glycoprotein
- Muscle-growth and regeneration research
- TGF-beta family signaling studies
Follistatin-344 is NOT a muscle-building drug — it is studied as a growth-signal optimizer.
Most molecules push the accelerator. This one is studied for lifting the brake — a fundamentally different research question.
F-344 1mg — limited research stock. Secure yours today.
For laboratory research only. This product is not approved for human consumption, therapeutic use, or diagnostic applications. It has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease. Nothing on this page is medical advice.
Reconstitution / BAC Water
Reconstitution / BAC Water
All vial peptides are supplied in lyophilized powder form for research purposes. Reconstitution / BAC Water requires bacteriostatic (BAC) water, and the amount used depends on the concentration required for your research protocol.
Storage & Handling
Storage & Handling
Before reconstitution, keep sealed vials cool, dry, and away from direct light. For longer-term storage, freezing is recommended to preserve stability.
After reconstitution, store refrigerated and use within 30 days for best stability.
Who Is It For?
Who Is It For?
This page is intended for buyers already familiar with peptide research products who want a fast, simple way to choose in-stock items and complete checkout quickly.

F-344 1mg
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