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Muscle Growth5 cited studies

Sermorelin

Synthetic GHRH(1-29) — stimulates pituitary GH release for anti-aging and recovery.

SummaryMechanismDosingSafetyStudies
Research use only — not for human consumption.

What it is

Sermorelin Acetate is a synthetic peptide that encourages the pituitary gland to increase growth hormone (GH) production, leading to gains in lean tissue, fat metabolism, energy, sleep, and tissue repair. Commonly used in hormone-replacement and anti-aging protocols for its natural support of vitality and overall wellness.

Mechanism of action

Sermorelin is the first 29 amino acids of human GHRH — the active fragment that binds GHRH receptors on the anterior pituitary, triggering pulsatile GH release. Because it works upstream of the pituitary, it preserves negative feedback and reduces overshoot.

Half-life: ~10–20 minutes.

Evidence summary

Decades of pediatric GH-deficiency data establish efficacy in stimulating natural GH secretion. Adult anti-aging use is largely off-label; published work supports HPA preservation and a favorable safety profile.

Typical dosing protocols

Typical dose
200–300 mcg
Frequency
Once daily
Cycle length
12 weeks
  • 200–300 mcg subcutaneous, once daily before bed
  • Often stacked with Ipamorelin for synergistic GH release
  • 12-week cycles, repeat after 4–8 weeks off

Side effects & safety

  • Injection-site redness or itching
  • Transient flushing or headache
  • Generally well-tolerated relative to direct GH

Cited studies

  1. (1996). Once daily subcutaneous growth hormone-releasing hormone therapy accelerates growth in growth hormone-deficient children during the first year of therapy. Geref International Study Group. Journal of Clinical Endocrinology & Metabolism.
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  2. (1993). Growth response to growth hormone-releasing hormone(1-29)-NH2 compared with growth hormone. Acta Paediatrica Supplement.
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  3. (1993). Pharmacokinetics of growth hormone-releasing hormone(1-29)-NH2 and stimulation of growth hormone secretion in healthy subjects after intravenous or intranasal administration. Acta Paediatrica Supplement.
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  4. (1988). Growth hormone releasing hormone or growth hormone treatment in growth hormone insufficiency?. Archives of Disease in Childhood.
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  5. (1999). Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency. BioDrugs.
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Disclaimer

All content is for research and educational purposes. Peptides described are sold for laboratory research use only and are not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before beginning any protocol.