Sermorelin dosage chart
5, 10 and 15 mg vials at three water volumes, every reported nightly dose from 100 to 500 mcg converted to the mark on a U-100 syringe.
25 printable pages: dosing cards for the twelve most-used compounds at three water volumes, titration planners, a vial log, and five pages on what to do when it has already gone wrong.
Sermorelin is a 29 amino acid fragment of growth hormone releasing hormone, dosed in micrograms out of a vial labelled in milligrams. It was once a licensed diagnostic and paediatric product and is now mostly seen through compounding pharmacies and research vendors. The half-life is roughly 11 to 12 minutes, which is why it is dosed close to sleep, when the natural growth hormone pulse occurs, and why the timing gets more attention than the exact unit count.
5 mg vial (5000 mcg)
| BAC water | Concentration | 100 mcg | 200 mcg | 300 mcg | 400 mcg | 500 mcg |
|---|---|---|---|---|---|---|
| 1 mL | 5000 mcg/mL | 2 | 4 | 6 | 8 | 10 |
| 2 mL | 2500 mcg/mL | 4 | 8 | 12 | 16 | 20 |
| 3 mL | 1667 mcg/mL | 6 | 12 | 18 | 24 | 30 |
10 mg vial (10000 mcg)
| BAC water | Concentration | 100 mcg | 200 mcg | 300 mcg | 400 mcg | 500 mcg |
|---|---|---|---|---|---|---|
| 1 mL | 10000 mcg/mL | 1 | 2 | 3 | 4 | 5 |
| 2 mL | 5000 mcg/mL | 2 | 4 | 6 | 8 | 10 |
| 3 mL | 3333 mcg/mL | 3 | 6 | 9 | 12 | 15 |
15 mg vial (15000 mcg)
| BAC water | Concentration | 100 mcg | 200 mcg | 300 mcg | 400 mcg | 500 mcg |
|---|---|---|---|---|---|---|
| 1 mL | 15000 mcg/mL | 0.7 | 1.3 | 2 | 2.7 | 3.3 |
| 2 mL | 7500 mcg/mL | 1.3 | 2.7 | 4 | 5.3 | 6.7 |
| 3 mL | 5000 mcg/mL | 2 | 4 | 6 | 8 | 10 |
Units on a standard U-100 insulin syringe. * means more than 100 units, so more than one 1 mL syringe.
How many units is 200 mcg of sermorelin?
8 units from a 5 mg vial reconstituted with 2 mL of bacteriostatic water, which is 2500 mcg/mL and makes 200 mcg a 0.08 mL draw. From the same vial with 1 mL it is 4 units, and from a 10 mg vial with 2 mL it is 4 units. Four units is a hard mark to read, which is the argument for more water rather than less on this one.
5 mg in 2 mL, dose by dose
| Dose | In mg | Draw | U-100 units | Doses per vial | Lasts, at once nightly |
|---|---|---|---|---|---|
| 100 mcg | 0.1 mg | 0.04 mL | 4 units | 50 | 50 days |
| 200 mcg | 0.2 mg | 0.08 mL | 8 units | 25 | 25 days |
| 300 mcg | 0.3 mg | 0.12 mL | 12 units | 16 | 16 days |
| 400 mcg | 0.4 mg | 0.16 mL | 16 units | 12 | 12 days |
| 500 mcg | 0.5 mg | 0.2 mL | 20 units | 10 | 10 days |
Frequency, and how long a vial lasts
Sermorelin is a once-nightly compound in almost every report, taken on an empty stomach before bed, in blocks of several weeks with breaks. Commonly reported amounts run 100 to 500 mcg. At 200 mcg a night a 5 mg vial is 25 nights, a 10 mg vial is 50 and a 15 mg vial is 75, so a single 10 mg vial covers most of a two-month block. There is no licensed schedule for this use.
| Dose | U-100 units (5 mg in 2 mL) | Per week | 5 mg vial | 10 mg vial | 15 mg vial |
|---|---|---|---|---|---|
| 100 mcg nightly | 4 units | 0.7 mg | 50 nights | 100 nights | 150 nights |
| 200 mcg nightly | 8 units | 1.4 mg | 25 nights | 50 nights | 75 nights |
| 300 mcg nightly | 12 units | 2.1 mg | 16 nights | 33 nights | 50 nights |
| 400 mcg nightly | 16 units | 2.8 mg | 12 nights | 25 nights | 37 nights |
| 500 mcg nightly | 20 units | 3.5 mg | 10 nights | 20 nights | 30 nights |
If yours came as a liquid
Compounded sermorelin from a pharmacy often arrives already reconstituted at a stated concentration, sometimes blended with ipamorelin. In that case there is no vial and water step: the label gives you the concentration directly. A label reading 3 mg/mL is the same arithmetic as a 3 mg vial reconstituted with 1 mL, so 200 mcg is 0.067 mL, which is 6.7 units. Enter those two numbers into the mg to units calculator and skip the reconstitution entirely.
1 mg is 1,000 mcg throughout. A 5 mg vial holds 5,000 mcg, which is why a compound dosed in hundreds of micrograms lasts weeks.
Common questions
- How many units is 200 mcg of sermorelin?
- 8 units from a 5 mg vial reconstituted with 2 mL of bacteriostatic water, which is 2,500 mcg/mL. From the same vial with 1 mL it is 4 units, and from a 10 mg vial with 2 mL it is 4 units.
- How much bacteriostatic water for a 5 mg sermorelin vial?
- 2 mL is the usual choice and gives 2,500 mcg/mL, putting the commonly reported 100 to 500 mcg range at 4 to 20 units. With 3 mL that range moves up to 6 to 30 units, which is easier to read at the low end.
- How long does a 5 mg sermorelin vial last?
- 25 nights at 200 mcg, 50 at 100 mcg and 10 at 500 mcg. A 10 mg vial doubles each of those and a 15 mg vial triples them.
- When is sermorelin taken?
- Almost every report describes once nightly, on an empty stomach before bed, because the natural growth hormone pulse happens during sleep. The half-life is roughly 11 to 12 minutes, so nothing carries over to the next day.
- My sermorelin came as a liquid. How do I use the chart?
- Use the concentration on the label instead of a vial and water volume. A label reading 3 mg/mL is the same arithmetic as a 3 mg vial reconstituted with 1 mL, so 200 mcg is 0.067 mL, or 6.7 units.
Common conversions
The same three-step maths, pre-filled for the doses people ask about most. Units on a U-100 insulin syringe, where 100 units is 1 mL.
- mg to units calculator Any dose at any concentration, both directions, with the full reference tables
- Units to mg calculator What the units you drew are in milligrams
- 1 mg to units The most-asked conversion, at every common setup
- 2 mg to units Retatrutide starting dose
- 2.5 mg to units Tirzepatide starting dose
- 5 mg to units Tirzepatide step two, MOTS-c, epitalon
- 10 mg to units Tirzepatide step four
- 12 mg to units Retatrutide top dose, tirzepatide 12.5 mg
- 15 mg to units Tirzepatide top dose
All calculators and charts
Weight management (GLP-1 family)
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- Tirzepatide calculator The 2.5 to 15 mg ladder, converted
- Semaglutide calculator The 0.25 to 2.4 mg ladder, converted
- Cagrilintide calculator Amylin analogue, 0.3 to 4.5 mg weekly
Growth hormone axis
- HGH (somatropin) calculator IU vials to syringe units
- Ipamorelin calculator mcg doses, in mL and units
- CJC-1295 (no DAC) calculator No-DAC and DAC, mcg to units
- CJC-1295 / Ipamorelin blend calculator The 5 mg + 5 mg blend, per component
- Sermorelin calculator Nightly mcg doses to units
- Tesamorelin calculator 1 to 2 mg daily, in units
- Hexarelin calculator mcg doses to units
- IGF-1 LR3 calculator Tens of mcg from very small vials
- AOD-9604 calculator 300 mcg daily, in units
- MOTS-c calculator 5 to 10 mg, two or three times a week
Repair, skin and blends
- BPC-157 calculator mcg doses from a 5 or 10 mg vial
- TB-500 calculator Loading and maintenance, in units
- BPC-157 / TB-500 blend calculator The Wolverine stack, per component
- GHK-Cu calculator 50 to 200 mg vials, mg doses
- GLOW blend calculator The 70 mg blend, split per component
- KLOW blend calculator The 80 mg blend, split per component
Other compounds
- PT-141 calculator 0.5 to 2 mg, as needed
- Melanotan II calculator mcg loading doses to units
- NAD+ calculator 100 to 1,000 mg vials, 25 to 200 mg doses
- Thymosin alpha-1 calculator 1.6 mg twice weekly, in units
- Epitalon calculator Short courses of 5 to 10 mg
- Kisspeptin-10 calculator mcg doses to units
- Glutathione calculator Hundreds of mg, or a 200 mg/mL solution
Dosage charts and schedules
- Peptide reconstitution chart Concentration for every vial and water combination
- Peptide dosing chart Printable unit tables for every compound
- Retatrutide titration schedule 2 to 12 mg in units, stage by stage
- Tirzepatide titration schedule 2.5 to 15 mg in units, stage by stage
- Semaglutide titration schedule 0.25 to 2.4 mg in units, stage by stage
- KLOW dosage and frequency chart The 80 mg blend at 2, 3 and 4 mL, both phases
- GLOW dosage chart The 70 mg blend, units to each peptide
- Wolverine stack dosing chart BPC-157 + TB-500, blend and separate vials
- MOTS-c dosage chart 5 and 10 mg vials at three water volumes
- Tirzepatide reconstitution chart Every vial size, every water volume, the whole ladder
- Retatrutide dosing chart 1 to 12 mg across 10, 20 and 30 mg vials
- Tirzepatide units to mg chart Both directions, every vial and water volume
- Semaglutide units to mg chart The dosage chart in units, both directions
- NAD+ injection dosage chart Per day, per week and frequency, 100 to 1,000 mg vials
- Tesamorelin dosage chart 2, 5 and 10 mg vials, 0.5 to 2 mg in units
- BPC-157 dosage chart mcg doses from 5 and 10 mg vials, four water volumes
- PT-141 dosage chart The 10 mg vial, 0.5 to 2 mg, with uses per vial
- Sermorelin dosage chart (this page)
- Printable dosing charts Four one-page charts to save, pin or print
- Peptide storage chart How long powder and mixed vials last, fridge to freezer
Tools
- Peptide calculator The general tool, any compound
- Reconstitution calculator How much water to add, and why it matters
- Bacteriostatic water calculator Pick a volume that lands where you can read it
- How to read an insulin syringe U-100 vs U-40, and the 2.5x error
- The Protocol Pack Free 25-page printable reference
- mg to units calculator Both directions, any concentration, with the reference tables
- 1 mg to units on an insulin syringe The conversion table for every common concentration
- Units to mg calculator The mark you drew, back into milligrams
- 2 mg to units on an insulin syringe 2 mg at every common vial and water volume
- 2.5 mg to units on an insulin syringe 2.5 mg at every common vial and water volume
- 5 mg to units on an insulin syringe 5 mg at every common vial and water volume
- 10 mg to units on an insulin syringe 10 mg at every common vial and water volume
- 12 mg to units on an insulin syringe 12 mg at every common vial and water volume
- 15 mg to units on an insulin syringe 15 mg at every common vial and water volume
- Methodology Every formula, assumption and rounding rule
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