Follistatin-344
Myostatin antagonist.
- Sizes available
- 1mg
- Lab certificate (COA)
- Arrives with shipment
· Research-grade only · Not for human consumption · 21+ ·
Inhibits myostatin to drive muscle growth. Still at the animal-research stage.
Mechanism · Follistatin 344-aa isoform. Activin / myostatin binding inhibitor.
Best for. Not for.
Best for
- Myostatin inhibition research (animal and early human).
- Users on a short (10-day) cycle.
- Breaking through a muscle-hypertrophy plateau.
Not for
- Concern for cardiac muscle hypertrophy (myostatin has a systemic role).
- Active malignancy, pregnancy, or children.
- Long-term continuous use.
Mechanism, dose, ramp, risk.
- Mechanism
- Binds myostatin, releasing the brake on muscle growth.Source · PEPVERA editorial
- Target dose
- 100 mcg / day.Source · PEPVERA editorial
- Ramp
- 10-Day cycles.Source · PEPVERA editorial
- Risks
- Cardiac muscle hypertrophy concern.Source · PEPVERA editorial
Compared to its siblings.
Follistatin-344
Inhibits myostatin to drive muscle growth. Still at the animal-research stage.
Pros
- · Tissue-binding isoform with site-targeted action.
- · Shorter exposure window than Follistatin-315 may limit systemic risk.
Cons
- · Shorter serum half-life than Follistatin-315.
- · Cardiac muscle hypertrophy concern shared with Follistatin-315.
Follistatin-315
Serum circulating isoform. Longer half-life.
Pros
- · Sustained myostatin block
Cons
- · Same cardiac concern
See Follistatin-315 →
COA per supplier
Published, in-house, or shipment-time
Each supplier declares its own HPLC floor and COA policy. The per-supplier verifier appears on the certificate page; refund and shipping terms vary by supplier and are shown on the supplier listing.
Compare 1 suppliers
| Supplier | Price | COA | Ships | |
|---|---|---|---|---|
| Pure Peptide UKUK | $75$75.00/mg · 1mg | In-house COA | 4 days | Out of stock |
Direct from foundry. Slower than domestic resellers; consistency is the trade. Insulated packaging, tracked from departure to doorstep. Replacement issued on damage.
Risk
Cardiac muscle hypertrophy concern. These pass with discipline. They do not pass with bravado.
Source · PEPVERA editorialDiscipline
10-Day cycles.
Source · PEPVERA editorialWellness
Hydrate. Eat protein. Sleep eight. Hold a dose for at least two weeks before ascending.
Anti-patterns
- · Do not pair with stimulants late in the day.
- · Do not break the cycle without a planned taper.
- · Do not exceed the dose to chase a deeper sleep response.
Crisis
If the ramp triggers severe anxiety, anhedonia, or persistent gastrointestinal disturbance, stop. Resume after two weeks at half the prior dose. The discipline is the slow climb.
Week 1–2
100 mcg / day.
Initiation
Week 3–4
100 mcg / day.
Signal emerges
Week 5–8
100 mcg / day.
Hold
Week 9–12
Cycle review
Assess
Draw 20 units.
0.1 mg = 0.20 mL at 0.50 mg/mL. 10.0 doses per vial.
apex · XI
Follistatin-344 · 1mg