Source comparison
Sermorelin Muscle Growth Complete Guide 2026: Protocol Comparison
Monotherapy (no training) 200 mcg nightly 25–35% from baseline 0.5–1.2 kg (mostly water retention) Statistically detectable but clinically insignificant for muscle. IGF-1 elevation without mechanical stimulus produces minimal contractile tissue gain Combined w
This comparison does not assign a generated winner or score.
- Monotherapy (no training)
- 200 mcg nightly
- 25–35% from baseline
- 0.5–1.2 kg (mostly water retention)
- Statistically detectable but clinically insignificant for muscle. IGF-1 elevation without mechanical stimulus produces minimal contractile tissue gain
- Combined with resistance training (3x/week)
- 250 mcg nightly
- 40–50% from baseline
- 2.1–3.4 kg lean mass
- Amplifies training adaptation. The majority of lean mass gain persists 90 days post-discontinuation if training continues
- Pulse dosing (5 days on, 2 days off)
- 300 mcg on training nights only
- 30–42% from baseline
- 1.8–2.9 kg lean mass
- Preserves receptor sensitivity and reduces cost. Comparable outcomes to daily dosing when aligned with training frequency
- High-dose daily (above clinical range)
- 500+ mcg nightly
- 45–55% from baseline
- 2.5–3.8 kg lean mass
- Marginal gains do not justify increased side effect risk (joint pain, edema, insulin resistance). The dose-response curve flattens above 300 mcg