Sermorelin Dosage Calculator
Sermorelin is typically dosed 200–500 mcg nightly. Enter your vial size and bacteriostatic water volume to convert that into syringe units.
This is a unit converter. It converts an amount you already have into volume and syringe units. It does not tell you what to take, and it is educational only — not medical advice. Confirm every amount with your clinician and your product label.
Example mixes to try the converter
Examples only — not recommended amounts. These fill in a vial size and diluent volume only — never an amount to inject. Enter the dose your clinician gave you yourself.
Calculator inputs
Total compound in the vial.
Volume of bacteriostatic water you reconstitute with.
Enter your target dose as a number.
U-100 = 100 units per mL (standard). U-40 = 40 units per mL.
- Enter your target dose as a number.
Sermorelin concentration reference (mg/mL)
What each vial size becomes at common bacteriostatic water volumes.
| Vial | + 1 mL | + 2 mL | + 3 mL | + 5 mL |
|---|---|---|---|---|
| 2 mg | 2.00 mg/mL | 1.00 mg/mL | 0.67 mg/mL | 0.40 mg/mL |
| 5 mg | 5.00 mg/mL | 2.50 mg/mL | 1.67 mg/mL | 1.00 mg/mL |
| 9 mg | 9.00 mg/mL | 4.50 mg/mL | 3.00 mg/mL | 1.80 mg/mL |
| 15 mg | 15.00 mg/mL | 7.50 mg/mL | 5.00 mg/mL | 3.00 mg/mL |
Sermorelin dosing evidence
No established, regulator-approved human dosing range. DoseRoutine performs arithmetic; it does not choose or recommend a dose. Your prescriber decides yours.
No single dosing table is shown because an established human range is unavailable or depends on the exact approved indication and product label.
Sources
- FDA 503A bulks evaluation resources — U.S. Food and Drug Administration
What trips people up
- 5 mg + 2.5 mL = 2 mg/mL, so 300 mcg = 15 units on a U-100 syringe.
- Sermorelin has a very short half-life (around 10–20 minutes), which is why it is dosed nightly rather than weekly.
- It is a GHRH analogue, so it depends on a working pituitary — it will not work like exogenous HGH.
- Sermorelin is prescription-only in the US when compounded for human use.
How the math works
- Concentration (mg/mL) = vial mg ÷ bacteriostatic water mL.
- Volume per dose (mL) = dose mg ÷ concentration.
- Syringe units = volume × 100 on a U-100 syringe, or × 40 on a U-40 syringe.
- Doses per vial = vial mg ÷ dose mg. Water volume never changes this number.
Sermorelin calculator FAQ
How many units is 300 mcg of sermorelin?
At 2 mg/mL (5 mg vial + 2.5 mL BAC water) it is 0.15 mL = 15 units on a U-100 syringe. At 1 mg/mL it would be 30 units.
How much BAC water for a 5 mg sermorelin vial?
2.5 mL is common and gives 2 mg/mL. Use 5 mL if your dose is 200 mcg or lower and you want a bigger, more readable draw.
When should sermorelin be injected?
At bedtime on an empty stomach. Its short half-life means it works by amplifying the natural nocturnal growth hormone pulse, and food-driven insulin blunts that pulse.
Sermorelin or CJC-1295?
Sermorelin is the shorter-acting original GHRH analogue; CJC-1295 is a modified version with a longer half-life. CJC-1295 with DAC lasts days, which changes the protocol from nightly to weekly.
Educational tool only — not medical advice. Verify every dose with your prescriber and follow sterile technique. See our medical disclaimer.
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Reviewed by the DoseRoutine editorial team. Last reviewed .