How many units is 300 mcg of sermorelin?

With a 5 mg vial in 2.5 mL of bacteriostatic water (2 mg/mL), 300 mcg equals 0.15 mL — 15 units on a U-100 insulin syringe.

How much BAC water should I add to a 5 mg sermorelin vial?

2.5 mL yields 2 mg/mL, where every 5 units equals 100 mcg. 2.0 mL yields 2.5 mg/mL if you prefer a smaller draw volume.

How long does one 5 mg vial last at 300 mcg nightly?

5 mg covers roughly 16 doses at 300 mcg, so about two weeks of nightly use — usually well inside a 28-day refrigerated window. Adjust the shelf-life field if your storage discipline differs.

Sermorelin Reconstitution Calculator

Pre-loaded with a 5 mg / 2.5 mL mix and a 300 mcg nightly dose.

Delivery method

Diluent

Standard for injectable peptides.

Peptide in vial (mg)

BAC water (mL)

Discard vial after (days from mixing)

Common: 28 days refrigerated. Set your personal shelf-life limit — it drives the supply checklist so you always have a fresh vial on hand.

Target dose

Syringe

Reconstitution math

Concentration

5 mg ÷ 2.5 mL BAC water = 2.00 mg/mL

2.00 mg/mL

Per unit

2000 mcg/mL ÷ 100 units/mL (U-100)

20.0 mcg per unit

Units to draw

(300 mcg ÷ (5 mg × 1000)) × 2.5 mL × 100

15.0 units (0.150 mL)

Doses per vial

⌊(5 mg × 1000) ÷ 300 mcg⌋ = 16

16 doses

Time of day

Research & Reconstitution Literature Summary

Sermorelin is a 29-amino-acid analogue of growth-hormone-releasing hormone with a short circulating half-life, which is why research protocols favour a single consistent nightly administration. The lyophilised powder is reconstituted with bacteriostatic water and refrigerated at 2–8 °C; 5 mg in 2.5 mL gives 2 mg/mL.

Reference information for reconstitution math and reagent handling only. Not medical advice, and not a dosing recommendation.

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