A 5 mg DSIP vial mixed with 2 ml of bacteriostatic water holds 2.5 mg/ml. A 100 mcg dose is 0.040 ml — 4 units on a U-100 insulin syringe — and the vial holds 50 doses of that size.
Units on a U-100 insulin syringe (100 units = 1 ml) for DSIP doses from 50 mcg to 300 mcg, by how much bacteriostatic water is in a 5 mg vial. The highlighted row is the 100 mcg dose used above.
| Dose | 1 ml water 5 mg/ml | 2 ml water 2.5 mg/ml | 3 ml water 1.67 mg/ml | Doses per vial |
|---|---|---|---|---|
| 50 mcg | 1 u 0.010 ml | 2 u 0.020 ml | 3 u 0.030 ml | 100 |
| 100 mcg | 2 u 0.020 ml | 4 u 0.040 ml | 6 u 0.060 ml | 50 |
| 150 mcg | 3 u 0.030 ml | 6 u 0.060 ml | 9 u 0.090 ml | 33 |
| 200 mcg | 4 u 0.040 ml | 8 u 0.080 ml | 12 u 0.12 ml | 25 |
| 300 mcg | 6 u 0.060 ml | 12 u 0.12 ml | 18 u 0.18 ml | 16 |
A 4-unit draw is hard to measure accurately — each tick on a U-100 syringe is 1 or 2 units. Mixing the same vial with 4 ml of water makes the same 100 mcg dose 8 units, which is easier to read. A 0.3 ml insulin syringe (30-unit capacity) with half-unit marks also helps.
Unit math only, not a dosing recommendation. The dose range is what published protocols and trials describe; see the DSIP guide for sources.
DSIP is a naturally occurring nonapeptide first isolated from the brains of sleeping rabbits. It is studied for effects on sleep architecture, stress resilience, and pain modulation.
Half-life: Approximately 7–15 minutes (very short plasma half-life)
Typical dose range: 100–300 mcg per injection, typically at bedtime
Class: Nonapeptide neuromodulator
Regulatory status: Not FDA approved. Research use only.
Read the full DSIP guide → — mechanism, side effects, storage, regulatory status and citations. Or browse the whole peptide glossary.
Need a different unit or a different question? The peptide dose converter moves a dose between mcg, mg and IU, and the half-life visualizer shows how concentration accumulates across a dosing cadence. Loading DSIP into a reusable 3 ml pen instead of drawing it with a syringe? The peptide pen calculator turns the same vial into mcg per click and clicks to dial. All of them are listed on the free peptide tools page.
Both. This DSIP calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
This page is pre-filled with 2 ml of bacteriostatic water for a 5 mg DSIP vial because that is a common research ratio. You can adjust the water amount in the full calculator.
4 units on a U-100 insulin syringe, when a 5 mg vial is mixed with 2 ml of bacteriostatic water (2.5 mg/ml). That is 0.040 ml. With a different amount of water the unit count changes — the dose chart on this page lists 1 ml, 2 ml, 3 ml mixes.
50 doses of 100 mcg. The number of doses depends only on vial strength and dose size — adding more or less water changes the volume of each draw, not how many draws the vial holds.
No. It only performs unit math. Dosing, titration, and whether DSIP is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Peptide Protocol remembers your DSIP vial, shows the units for every dose, tracks what is left, and rotates injection sites for you.
Get the iPhone app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.