The Mass Builder Stack
Remove the ceiling. Build the muscle.
$697/mo
$579/mo
Save $118/mo vs. buying individually
3 protocols included
How This Stack Works
Follistatin binds and neutralizes myostatin and activin, removing the biological brake on muscle growth. IGF-1 LR3 (with extended half-life) binds IGF-1 receptors on muscle cells, stimulating both mTOR-driven protein synthesis and satellite cell-mediated fiber growth. HGH Fragment 176-191 activates hormone-sensitive lipase in fat cells, driving lipolysis and inhibiting lipogenesis — exclusively targeting fat metabolism.
Why This Combination
Building muscle past a certain point means overcoming biology's built-in limits. Myostatin is the signal that tells your muscles 'stop growing' — and follistatin neutralizes it. With that ceiling raised, IGF-1 LR3 provides a long-acting growth factor that promotes both muscle fiber hypertrophy and hyperplasia, directly stimulating protein synthesis and satellite cell activation. HGH Fragment 176-191 adds targeted fat metabolism without the blood sugar or organ growth effects of full growth hormone — supporting the lean, defined composition that makes muscle gains visible. Three mechanisms: remove the limit, provide the growth signal, clear the fat.
Ideal For
Serious muscle building goals
Breaking through long-standing plateaus
Advanced body composition
Those who train hard and want the results to match
What to Expect
Week 1–2
Signals
Myostatin inhibition begins. Growth factor signaling activates. Recovery improves.
Week 4–6
Response
Training response increases beyond previous capacity. Fat metabolism accelerates.
Week 8–12
Growth
Measurable lean mass gains. Body composition shifts. Strength improvements accelerate.
Week 12–16
Results
Plateau broken. Lean mass and definition at new levels. Continued with training.
Ready to start?
The Mass Builder Stack — $579/mo. Save $118 vs. buying separately. Care team reviewed. Ships free.
HSA/FSA eligible · Cancel anytime · Ships in 3-5 days