Understand the source comparison
How to Use Peptides for Endurance: Full Protocol Comparison
| Peptide Class | Primary Mechanism | Standard Dose | Injection Frequency | Cycle Length | Key Co-Factors | Bottom Line ||—|—|—|—|—|—|| TB-500 | Angiogenesis (VEGF upregulation, capillary formation) | 2.5–5mg | 2× weekly loading, 1× weekly maintenance | 6–8 we
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- | Peptide Class | Primary Mechanism | Standard Dose | Injection Frequency | Cycle Length | Key Co-Factors | Bottom Line ||—|—|—|—|—|—|| TB-500 | Angiogenesis (VEGF upregulation, capillary formation) | 2.5–5mg | 2× weekly loading, 1× weekly maintenance | 6–8 weeks on, 4 weeks off | Vitamin C (collagen synthesis), copper (angiogenesis cofactor) | Best for oxygen delivery limiters. Works slowly but compounds over weeks || EPO-Mimetics | Erythropoiesis (red blood cell production, hemoglobin increase) | 2000–4000 IU | 2–3× weekly | 6–8 weeks maximum | Iron (18–27mg/day), B12 (500–1000mcg), folate (400–800mcg) | Highest performance gain for systemic oxygen transport. Requires blood monitoring || SLU PP 332 | Mitochondrial biogenesis (PGC-1α activation, ATP capacity increase) | 5–10mg | 1× daily | 6–8 weeks on, 4 weeks off | L-carnitine (2–3g/day), CoQ10 (200–300mg), magnesium | Best for lactate threshold improvement. Effects manifest after 3–4 weeks || MK 677 (Ibutamoren) | GH secretagogue (