Vial duration

DSIP vial duration calculator

Estimate how many weeks one 5 mg DSIP vial covers at your dose and weekly cadence.

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Last updated: May 13, 2026

Vial (mg)

Dose (mg)

Doses / week

Total doses

Lasts

5.0 weeks

DSIP weeks-of-supply at common cadences

How long one 5 mg DSIP vial covers at a 0.2 mg per dose, for three weekly cadences. Total doses per vial: 25.

Doses per week	Total doses per vial	Weeks of supply
4	25	6.3
5	25	5.0
6	25	4.2

Math weeks-of-supply assumes every dose draws cleanly. Stability typically caps a reconstituted vial at 4–6 weeks of refrigerated use regardless of how much liquid remains.

Worked example

How long one DSIP vial lasts, the long version

Total doses in the vial: floor(5 ÷ 0.2) = 25. The floor matters — a partial dose at the bottom doesn't count.
Cadence: 5 doses per week for DSIP at this example step.
Math weeks-of-supply: 25 ÷ 5 = 5.0 weeks of liquid in the vial.
Stability ceiling: most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage. Whichever number is smaller is the one that binds your refill date.
Doubling the dose roughly halves both numbers — and titration usually closes the gap between "math weeks" and "stability weeks" without you noticing.

Scenarios people actually run into

Three things that come up logging DSIP

Math says one 5 mg DSIP vial covers 5.0 weeks at 0.2 mg per dose. Stability typically caps a reconstituted vial at 4–6 weeks. Whichever number is smaller is the date on your refill calendar.
Titration up doubles the dose and halves the vial. A 12-week-on-paper vial becomes a 6-week vial the day you step up — order the next vial the same day you take the step.
Shipping windows are the silent third constraint. If your supplier runs 1–3 weeks, the refill order has to leave at least that long before "math weeks" or "stability weeks," whichever is binding.

Same-category neighbor

DSIP next to CJC-1295

Both sit in the Sleep bucket — here's the vial duration math side by side on each one's example vial.

	DSIP	CJC-1295
Vial	5 mg	2 mg
Cadence	5/wk	7/wk
Weeks of supply	5.0	2.9

Want the full breakdown? CJC-1295 reference →

DSIP, short for Delta Sleep-Inducing Peptide, is a naturally occurring substance in the body that people explore for its potential connection to sleep patterns and stress regulation. While its exact effects are still being studied, some research points to its role in promoting a specific type of brain wave activity called delta waves, which are linked to deep, restorative sleep. The data on DSIP is still emerging, and it doesn

Planning DSIP vials in real life

DSIP vial planning lines up well with typical sleep-tracking cycles. A 5 mg vial covers 25 doses at 200 mcg — that's 5 weeks at 5 nights per week, or 25 nights at every-night cadence. Both patterns finish a vial inside the 4-6 week stability window with no leftover to discard.

If you cycle DSIP (5-on/2-off, or 4-week-on/2-week-off), match the reconstitution to the cycle start so the vial empties when the cycle ends. Carrying a half-empty vial through an off-week is wasteful — stability ticks down regardless of whether you're injecting. Most experienced sleep-protocol users reconstitute fresh at each cycle start.

Storage and shelf life for DSIP

Proper storage is critical for maintaining the stability and potency of your DSIP. Before reconstitution, the lyophilized (freeze-dried) powder should be stored in a cool, dark place. The ideal location is a refrigerator, typically between 2°C to 8°C (36°F to 46°F). Storing it this way protects the delicate peptide chains from degradation due to heat and light, ensuring it remains stable for an extended period, often up to a year or more. Some people even store it in the freezer for long-term keeping before mixing, but refrigeration is generally sufficient for most timelines. Always keep the vials away from direct sunlight and avoid exposing them to extreme temperature fluctuations, as this can compromise the peptide’s integrity before you even get a chance to use it.

Once you have reconstituted the DSIP with bacteriostatic water, the storage rules change slightly, and the clock starts ticking on its shelf life. The mixed solution must be kept in the refrigerator at all times, again between 2°C to 8°C (36°F to 46°F). Do not freeze the liquid peptide, as the freeze-thaw cycle can damage the molecules and render it less effective. When stored properly in the fridge, the reconstituted solution is generally considered stable for about three to four weeks. After this period, its potency may begin to decline. To keep track, it’s a great habit to label your vial with the date of reconstitution. This simple step helps ensure you are always using a solution that is within its optimal window of stability for consistent tracking.

How the DSIP vial duration calculator works

A 5 mg DSIP vial covers 25 doses at 200 mcg — about 5 weeks at 5 nights per week or 25 nights at every-night cadence. Both fit inside the 4-6 week stability window. One vial per cycle is the norm.

The formula is two divisions. Total doses per vial equals vial mg divided by dose mg, rounded down. Weeks of supply equals total doses divided by doses per week. With a 5 mg vial of DSIP, a 0.2 mg dose, and 5 dose per week, the vial covers 25 doses, or about 5.0 weeks of supply.

The three inputs that move the answer: vial mg (set when you bought the vial), dose mg (set by your protocol step), and doses-per-week (set by the peptide's half-life). Once a vial is reconstituted it also has a stability ceiling — most lyophilized peptides reconstituted in BAC water are typically used within four to six weeks of refrigerated storage, so a vial that mathematically lasts twelve weeks may not last twelve weeks in practice.

Curious how long your vial of DSIP will last? The Vial Duration Calculator is designed to answer exactly that. It helps you plan ahead by estimating the number of doses you can get from a single vial based on your current protocol. Just input the total milligrams in your vial, how much water you reconstituted it with, and the milligram amount of your typical dose. For example, if you have a 5mg vial and your dose is 0.2mg, the calculator will show that you have 25 doses available. If you plan to take 5 doses per week, that vial will last you 5 weeks. This information is incredibly useful for budgeting and ensuring you have your next vial ready when you need it.

This planning tool really shines when you start considering adjustments to your protocol. What if you decide to titrate your DSIP dose upward? A higher dose means you'll get fewer administrations from the same vial, and its duration will shorten. For example, moving your dose from 0.2mg to 0.25mg would reduce the number of doses in a 5mg vial from 25 to 20. The Vial Duration Calculator allows you to see the impact of these changes instantly. This helps you anticipate your needs and manage your supply chain without any surprises. It’s a simple but powerful feature for maintaining a consistent and uninterrupted tracking schedule.

Common DSIP vial-planning mistakes

Storing the reconstituted vial at room temperature or in the freezer, which can degrade the peptide.
Shaking the vial vigorously after adding water, which can damage the fragile peptide molecules.
Giving up too quickly; for some, the benefits of DSIP appear gradually over several days or weeks of use.

Frequently asked questions about DSIP vial duration

How does the DSIP vial duration calculator estimate weeks of supply?

It floors total doses (vial mg ÷ dose mg) then divides by doses per week. For this DSIP example — a 5 mg vial, 0.2 mg per dose, 5 dose/week — that's floor(5 ÷ 0.2) ÷ 5 = about 5.0 weeks. Flooring matters: a partial dose left in the vial doesn't count. DSIP fits a 4-5 week sleep cycle naturally — one vial covers one cycle without leftover.

Should I plan refills around the math, or around stability?

Whichever runs out first. Math says DSIP at the example dose lasts the calendar weeks shown above. Stability says most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage regardless of how much liquid is left. If the math says 12 weeks but stability caps at 5, plan around 5 — and reconstitute the next vial with less water so you finish it in the stability window. DSIP fits a 4-5 week sleep cycle naturally — one vial covers one cycle without leftover.

Does titrating the DSIP dose up shorten vial life?

Yes, often dramatically. Doubling the dose halves the doses-per-vial. The calculator shows real-time how a step-up changes the weeks-of-supply line, so you can re-time refill orders before a titration event rather than discovering the gap mid-protocol. DSIP fits a 4-5 week sleep cycle naturally — one vial covers one cycle without leftover.

What if I take DSIP less often than the default cadence here?

Drop the doses-per-week field. With 5 dose/week the example vial lasts about 5.0 weeks; halving the cadence roughly doubles that, but you'll hit the stability ceiling first. A vial that mathematically covers 16 weeks rarely covers 16 weeks in practice. DSIP fits a 4-5 week sleep cycle naturally — one vial covers one cycle without leftover.

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