What is DSIP (deep sleep inducing peptide)?
DSIP stands for delta sleep-inducing peptide, often searched as “deep sleep inducing peptide.” It is a nonapeptide, a chain of nine amino acids with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. Swiss researchers first isolated it in 1977 from the blood of rabbits and named it after the delta (slow-wave) sleep stage they were studying. Today it is sold as a research-labeled powder, and the DSIP 5mg vial is the size most people search for.
Decades of animal and laboratory research have not settled what role, if any, DSIP plays in the body, and no receptor for it has been firmly identified. That history is context only; this site makes no claims about sleep or any other effect. Related research compounds are listed in the peptide library.
How much BAC water for a DSIP 5mg vial?
DSIP is commonly sold in 2 mg and 5 mg vials. The volume of bacteriostatic water you add sets the concentration but never changes how much peptide the vial holds. More water means fewer micrograms per syringe unit; less water means more.
Read the chart by column first. Each column is one vial size, and moving down it shows the same milligrams spread across more liquid. Comparing across a row shows how the DSIP 5mg vial and the 2 mg vial differ at an identical water volume: the larger vial always carries more micrograms in every unit, in direct proportion to its label weight.
| BAC water | 2 mg vial | 5 mg vial |
|---|---|---|
| 1 mL | 20 mcg/unit 2 mg/mL | 50 mcg/unit 5 mg/mL |
| 2 mL | 10 mcg/unit 1 mg/mL | 25 mcg/unit 2.5 mg/mL |
| 2.5 mL | 8 mcg/unit 0.8 mg/mL | 20 mcg/unit 2 mg/mL |
| 3 mL | 6.67 mcg/unit 0.667 mg/mL | 16.67 mcg/unit 1.667 mg/mL |
Each cell shows mcg per unit on a U-100 syringe (100 units = 1 mL) and the resulting concentration.
The volumes in the chart are examples that tend to produce readable numbers, not recommendations. The BAC water to peptide ratio chart shows the same pattern across a wider range of vial sizes.
Worked example: DSIP 5mg in syringe units
The calculator runs three steps. Vial mg divided by water mL gives concentration. The amount you enter divided by concentration gives mL. mL multiplied by 100 gives units on a U-100 syringe, where 100 units = 1 mL. For example, if the amount you already have is the figure in this sentence and you are working with a DSIP 5mg vial:
The math: 5 mg ÷ 2 mL = 2.5 mg/mL (2,500 mcg/mL), which is 25 mcg per unit. 250 mcg ÷ 2,500 mcg/mL = 0.1 mL = 10 units on a U-100 syringe.
That amount is arbitrary and was chosen because it gives round results. With a small peptide like DSIP, amounts are often written in micrograms, so double-check the unit before typing: 1 mg = 1,000 mcg. The U-100 units to mL chart is useful if you are reading a 0.3 mL or 0.5 mL syringe.
DSIP 5mg calculator: what the numbers mean
The calculator and chart are arithmetic tools. They convert an amount you already have into a volume and a syringe mark. They do not decide an amount, a schedule, or a route, and they cannot tell whether any use is appropriate. There is no approved DSIP product with official dosing, and this site does not publish one.
Where the calculator earns its place is in catching mistakes. Entering 5 instead of 2 for the vial size, forgetting the water you actually added, or reading a non-U-100 syringe will all give wrong answers that still look plausible. If your result is a volume larger than the water in the vial, something is off. The steps in checking peptide calculator math let you verify any result by hand.
DSIP acetate and supplier reconstitution notes
Many vials are labeled “DSIP acetate.” The acetate is a counter-ion left over from purification, a common salt form for synthetic peptides, and it is part of the powder weight on some labels. Some suppliers state whether their milligram figure refers to the salt or the peptide itself; if a label is unclear, that is a question for the supplier, not something a calculator can resolve.
DSIP is generally described by suppliers as water-soluble, and most listings specify bacteriostatic or sterile water. If a product label names a particular diluent, volume, or storage condition, that label takes priority. Handling and sterility should follow the product labeling and a qualified professional. For how opened vials of water are dated and stored, see the guide to BAC water storage and shelf life.
Regulatory status of DSIP
DSIP is not an FDA-approved drug, and vials sold online are labeled for research use. A research label does not establish identity, purity, sterility, or suitability for use in people, and an accurate calculation cannot establish them either.
Product names and salt forms vary between sellers, so treat each label as its own source of truth for vial weight and diluent.
DSIP FAQ
What does DSIP stand for?
Delta sleep-inducing peptide. It was named after the delta, or slow-wave, sleep stage researchers were studying when they isolated it in 1977.
How much BAC water goes in a DSIP 5mg vial?
There is no single correct volume. The chart shows how each volume changes mcg per unit. If the product label names a diluent or volume, follow the label.
What is DSIP acetate?
It is DSIP supplied as an acetate salt, a common form for synthetic peptides. The acetate comes from the purification process.
Does this page give a DSIP dosage?
No. It converts an amount you already have into mL and U-100 syringe units. It does not recommend an amount, schedule, or use.
Can I use the calculator for a 2 mg DSIP vial?
Yes. Enter 2 mg as the vial size and the volume of water you actually added; the formula is the same for any vial.