Side-by-Side Comparison · 2026

GHRH vs Vasopressin

GHRH vs Vasopressin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

GHRH
Hypothalamic Hormone

Growth hormone-releasing hormone (GHRH) is a 44-amino acid hypothalamic peptide that stimulates GH synthesis and pulsatile release from anterior pituitary somatotrophs. It acts via GHRH receptor (GHRHR), a Gs-coupled GPCR, to elevate cAMP and drive GH secretion....

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Vasopressin
Hypothalamic Hormone

Arginine vasopressin (AVP), also called antidiuretic hormone (ADH), is a 9-amino acid cyclic neuropeptide synthesized in hypothalamic magnocellular neurons and released from the posterior pituitary. AVP serves dual master roles: regulating water homeostasis via renal V2 receptors...

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Key Parameters
Parameter GHRH Vasopressin
Category Hypothalamic Hormone Hypothalamic Hormone
Research FDA Approved (via analogs) Clinical
Half-Life ~7 min (plasma) 10-20 min (plasma)
Typical Dose Sermorelin: 0.2-0.3 mg SC at bedtime 0.01-0.04 U/min IV (vasopressor); 10-40 mcg intranasal
Frequency Daily (sermorelin) Variable
Route IV, SC Intravenous, Subcutaneous, Intranasal
FDA Status Sermorelin (GHRH 1-29) FDA approved for pediatric GH deficiency Approved (vasopressor, diabetes insipidus)

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Frequently Asked Questions
What is the difference between GHRH and Vasopressin?
GHRH: Growth hormone-releasing hormone (GHRH) is a 44-amino acid hypothalamic peptide that stimulates GH synthesis and pulsatile release from anterior pituitary somatotrophs. It acts via GHRH receptor (GHRH... Vasopressin: Arginine vasopressin (AVP), also called antidiuretic hormone (ADH), is a 9-amino acid cyclic neuropeptide synthesized in hypothalamic magnocellular neurons and released from the posterior pituitary. A...
Which has a longer half-life, GHRH or Vasopressin?
GHRH half-life: ~7 min (plasma). Vasopressin half-life: 10-20 min (plasma).
Can you stack GHRH and Vasopressin?
GHRH and Vasopressin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.