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Basics & Technique

How do I reconstitute a 2 mg sermorelin vial?

Updated 2026-05-05

Add 2 mL of bacteriostatic water to a 2 mg sermorelin vial. That gives you 1 mg per mL. On a U-100 insulin syringe, 10 units equals 100 mcg of sermorelin. Common starter dose is 100-300 mcg once a day at bedtime, on an empty stomach. Pour water down the wall, swirl gently, and store in the fridge.

IfIf your dose is 100 mcg
Thenthen draw 10 units on a U-100 insulin syringe
IfIf your dose is 300 mcg
Thenthen draw 30 units on a U-100 insulin syringe
IfIf you ate within the last 2 hours
Thenthen wait - food blunts the natural growth-hormone pulse sermorelin triggers
IfIf you feel a flush or warmth at injection
Thenthen this is normal for GHRH peptides - it usually fades after the first week
Key facts
  • 2 mg vial + 2.0 mL bac water = 1 mg/mL concentration
  • On a U-100 syringe at 1 mg/mL, 1 unit = 10 mcg
  • Sermorelin half-life is about 10-20 minutes; the goal is to trigger your own pulse, not flood you with peptide
  • Inject at bedtime on an empty stomach for the strongest natural growth-hormone response
  • Mixed vial keeps in the fridge ~28 days
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