Protocols/Fortis
Performance & Body Composition

FortisFollistatin 344

Block the brake on muscle growth.

$299/month
HSA/FSA eligible Ships free Cancel anytime
Follistatin 344

About

What it is

Follistatin binds and neutralizes myostatin — the protein that limits how much muscle your body builds. By reducing myostatin signaling, follistatin removes the biological ceiling on muscle development.

How it works

Follistatin binds activin and myostatin — proteins that limit muscle growth. By sequestering myostatin before it can signal muscle cells to stop growing, follistatin effectively removes the biological ceiling on muscle development.

Benefits

Blocks myostatin, the muscle growth limiter
Raises the ceiling on muscle development
Supports lean mass gains
Works alongside training for enhanced results

Who it's for

Maximum muscle development
Breaking through training plateaus
Advanced body composition goals
Those interested in myostatin science

What to expect

Week 1–4

Myostatin levels begin decreasing. Foundation phase.

Week 4–8

Muscle growth response increases with training. Recovery improves.

Week 12–16

Measurable lean mass gains beyond previous plateaus.

Safety & tolerability

Follistatin is a naturally occurring protein. Its primary function is myostatin inhibition. Our care team reviews your training goals and health profile, and monitors your response throughout the protocol.

How we compound

Single-source API

Every peptide is sourced from one vetted pharmaceutical-grade supplier — no blending from multiple sources.

Third-party tested

Independent labs verify purity, potency, sterility, and endotoxin levels before any batch is released.

Care team reviewed

A real person reviews your profile, your protocol, and your progress. Not an algorithm.

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$299/mo