Follistatin 344

Myostatin inhibitor. Allows muscle to grow past natural genetic limits.

Route: SubQ (or IM at site)Shelf life once mixed: ~30 daysCategory: Muscle / Growth

What Follistatin 344 is

Follistatin 344 is a naturally occurring glycoprotein, with this specific isoform being a potent antagonist of myostatin. Myostatin is a growth differentiation factor belonging to the TGF-beta superfamily, primarily known for inhibiting muscle growth. Follistatin 344 binds directly to myostatin, thereby preventing myostatin from interacting with its receptors on muscle cells and signaling pathways that limit muscle development. This inhibition consequently reduces myostatin's negative regulatory effect, allowing for an environment conducive to increased muscle mass and strength. It also acts as an antagonist for other related proteins like activin A, which similarly can inhibit muscle growth.

In research settings, Follistatin 344 has been investigated for its potential to facilitate muscle growth and increase strength, with noticeable effects typically observed over several weeks of consistent administration. Researchers often combine its study with specific resistance training protocols to observe synergistic effects on muscle hypertrophy. Typical investigative cycles might range from 8 to 12 weeks, though protocols vary significantly. Considerations include the method of administration, which can influence localized versus systemic effects, and the ongoing investigation into potential long-term physiological adaptations. It is important to remember that Follistatin 344 is a research peptide and is not approved for human therapeutic use or consumption.

Commonly reported effects

Muscle growth
Reduced myostatin
Fat loss

Reported side effects & considerations

Joint pain
Possible organ growth if abused

Storage & handling

LYOPHILIZED (unopened): store at 2-8°C (fridge) or -20°C (freezer) long-term. Protect from light.

AFTER RECONSTITUTION: refrigerate 2-8°C. Do NOT freeze. Discard after 30 days OR if the solution becomes cloudy, discolored, or contains particulates.

What people track

Because individual responses vary so much, the useful thing is your own record: what you logged and when, how much is left in the vial, and how your chosen metrics move over the weeks. Peptide Wizard keeps all of that in one place, alongside a 3D reference vial for Follistatin 344.

FAQ

What is Follistatin 344?

Myostatin inhibitor. Allows muscle to grow past natural genetic limits.

What do people commonly report with Follistatin 344?

Commonly reported effects include muscle growth, reduced myostatin, fat loss.

How should Follistatin 344 be stored?

LYOPHILIZED (unopened): store at 2-8°C (fridge) or -20°C (freezer) long-term. Protect from light.

How do I keep track of Follistatin 344 in my research log?

Peptide Wizard lets you record each entry, keep a vial ledger so you know what's left, and chart your own metrics over time. It is a logbook and reference only — it does not calculate or recommend doses.