Verified ComparisonLast updated: 7 March 2026
Best Peptides for Strength Research
Strength research examines peptides that promote muscle protein synthesis, force production, and fiber recruitment. This overview ranks by strength-specific evidence.
Follistatin 344
Recovery
4.0/ 5
B+
IGF-1 LR3
Growth Hormone
4.1/ 5
A−
Editor's note
Follistatin and IGF-1 LR3 both show very high strength-promotion potential via different mechanisms.
| Criterion | Follistatin 344 | IGF-1 LR3 |
|---|---|---|
| Muscle strength gains | Very high (myostatin block) | Very high (IGF-1 direct) |
| Mechanism specificity | Myostatin-focused | Multi-pathway IGF-1 |
| Preclinical strength data | Substantial | Extensive |
| Power development | Strong | Strong |
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