Follistatin vs Palmitoyl Tetrapeptide-7
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Follistatin
Follistatin is a glycoprotein that inhibits myostatin, the protein responsible for limiting muscle growth. By blocking myostatin, follistatin can theoretically allow for increased muscle development beyond natural limits.
Full details →Palmitoyl Tetrapeptide-7
Palmitoyl Tetrapeptide-7 is an anti-inflammatory peptide that reduces IL-6 secretion. Combined with Palmitoyl Tripeptide-1, it forms Matrixyl 3000, addressing both collagen production and inflammation.
Full details →Side-by-Side Comparison
| Aspect | Follistatin | Palmitoyl Tetrapeptide-7 |
|---|---|---|
| Dose Range | 50 mcg–100 mcg | 500 mcg–2 mg |
| Frequency | 1x daily | 2x daily |
| Cycle Length | 2–4 weeks | 4–12 weeks |
| Route | subcutaneous | topical |
| Mechanism | Binds to and neutralizes myostatin and activin, both of which are negative regulators of muscle mass. This removes the natural brake on muscle growth, allowing for enhanced hypertrophy. | Suppresses interleukin-6 (IL-6) production, reducing inflammation that contributes to skin aging. The anti-inflammatory effect complements collagen-stimulating peptides. |
| Typical Dosage | Research protocols typically use 100-300mcg daily, though optimal dosing is not well established. Gene therapy approaches have also been studied. | Topical: Usually combined with Palmitoyl Tripeptide-1 at similar concentrations (2-4%) in the Matrixyl 3000 complex. |
| Administration | Subcutaneous injection. Different isoforms exist (FS344, FS315) with varying properties. Requires careful sourcing due to complexity. | Topical application with other anti-aging actives. The palmitoyl group enhances delivery into the skin. |
| Side Effects | Limited human data. Theoretical concerns about effects on other organs where activin signaling is important. | Excellent tolerability profile. Anti-inflammatory properties may actually soothe sensitive skin. |
| Best For |
Key Differences
Unique to Follistatin:
Unique to Palmitoyl Tetrapeptide-7:
Key Studies
Follistatin
- Heart to Heal: Unveiling Follistatin's Potential for Myocardial Regeneration.
Circulation research, 2025
- Fructose and follistatin potentiate acute MASLD during complete hepatic insulin resistance.
Nature communications, 2025
- Follistatin drives neuropathic pain in mice through IGF1R signaling in nociceptive neurons.
Science translational medicine, 2024
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