Follistatin 344
Your body has a natural brake pedal on muscle growth called myostatin. It's your body's way of keeping muscle development in check—think of it like a governor on a truck that prevents the engine from over-revving. Follistatin 344 is a protein that essentially disables that brake.
People use follistatin 344 because it lets your muscles grow beyond what your genetics would normally allow. When you lift weights, your muscles respond, but myostatin is constantly telling them to slow down. By neutralizing myostatin, follistatin removes that "pump the brakes" signal, so your muscle cells can build bigger and faster than they otherwise would.
Here's how it works: follistatin circulates through your bloodstream and directly grabs onto myostatin molecules, binding to them and rendering them inactive—like putting a lock on that brake pedal. It's the full-length, most active version of the protein, which is why it's particularly potent. The result is that your skeletal muscle fibers get the green light to expand. Beyond muscles, follistatin also affects other systems in your body, including how your body regulates certain hormones and manages inflammation, though muscle growth is the primary effect people are after.
Dosage Information
Typical Dose
100 mcg
Frequency
Once daily
Administration
Subcutaneous injection
Half-Life
~2 hours
estimatedNotes
Typically run in cycles of 10-30 days. Effects on muscle growth become apparent within 10 days. The 315 variant has a shorter half-life and more targeted muscle effects than the 344 variant.
Why this matters
Similar to follistatin; subcutaneous injection in research protocols.
Protocol cycle
Dose Calculator
Calculate your draw amount for an insulin syringe (U-100)
Draw to the
4
unit mark
Draw 4 units for your 100mcg dose of Follistatin 344
This calculator is for educational purposes. Always verify your calculations and consult a healthcare professional.
Where does Follistatin 344 sit?
See how this peptide compares across all 150 peptides in our database.
Evidence Score
0.19
Potential Side Effects
Follistatin 344 discussions
Stacking Compatibility
Quick Facts
- Administration
- Subcutaneous injection
- Typical Dose
- 100 mcg
- Frequency
- Once daily
- References
- 2 curated + 10 from PubMed
- Evidence Score
- 0.2 / 100
Frequently Asked Questions about Follistatin 344
What is Follistatin 344?
Follistatin 344 is a naturally occurring glycoprotein that acts as an antagonist to myostatin, the protein that limits muscle growth. By neutralizing myostatin, Follistatin removes the natural "brake" on muscle development, enabling enhanced muscle growth and fat loss. The 344 variant is the full-length, most bioactive form.
How does Follistatin 344 work?
Follistatin binds directly to myostatin (GDF-8), activin, and other TGF-β superfamily members, neutralizing their biological activity. Myostatin is the primary negative regulator of muscle growth, and its inhibition leads to significant skeletal muscle hypertrophy. Follistatin also promotes follicle stimulating hormone (FSH) regulation and has effects on reproduction and inflammation.
What is the recommended dosage for Follistatin 344?
The typical dose is 100 mcg. Once daily. Administration: Subcutaneous injection. Typically run in cycles of 10-30 days. Effects on muscle growth become apparent within 10 days. The 315 variant has a shorter half-life and more targeted muscle effects than the 344 variant.
What are the side effects of Follistatin 344?
Injection site irritation. Possible impact on reproductive hormones. Joint tightness. Muscle cramping
What is the Follistatin 344 cycle protocol?
Follistatin 344 is typically cycled 10-30 days. Effects apparent within 10 days
Questions reflect common community inquiries. This is not medical advice.