Peptide PilotPeptide Pilot
Download on the App Store

Vial duration

GHRP-6 vial duration calculator

Estimate how many weeks one 5 mg GHRP-6 vial covers at your dose and weekly cadence.

Download on the App StoreiPhone · Free to download

Total doses

50

Lasts

7.1 weeks

GHRP-6 weeks-of-supply at common cadences

How long one 5 mg GHRP-6 vial covers at a 0.1 mg per dose, for three weekly cadences. Total doses per vial: 50.

Doses per weekTotal doses per vialWeeks of supply
6508.3
7507.1
8506.3

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 GHRP-6 vial lasts, the long version

  1. Total doses in the vial: floor(5 ÷ 0.1) = 50. The floor matters — a partial dose at the bottom doesn't count.
  2. Cadence: 7 doses per week for GHRP-6 at this example step.
  3. Math weeks-of-supply: 50 ÷ 7 = 7.1 weeks of liquid in the vial.
  4. 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.
  5. 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 GHRP-6

  • Math says one 5 mg GHRP-6 vial covers 7.1 weeks at 0.1 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

GHRP-6 next to GHRP-2

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

GHRP-6GHRP-2
Vial5 mg5 mg
Cadence7/wk7/wk
Weeks of supply7.17.1

Want the full breakdown? GHRP-2 reference →

GHRP-6 is a short-acting injectable peptide people use to trigger pulses of their own growth hormone, often when increased appetite is also a goal. Like GHRP-2, it mimics ghrelin at the GH-secretagogue receptor, but it produces a noticeably stronger hunger response. Studies confirm clear post-injection GH peaks alongside meaningful appetite stimulation. This page covers reconstitution math and per-injection logging cadence.

Planning GHRP-6 vials in real life

GHRP-6 vial planning has the same stability-versus-math gap as GHRP-2. A 5 mg vial covers 50 doses at 100 mcg, which is two months of single-daily injection — but the reconstituted vial caps at 4-6 weeks of refrigerated usability. At single-daily 100 mcg cadence, you'll have ~2 weeks of doses left in the vial when stability runs out.

Three workarounds matter. First, reconstitute with 1 mL instead of 2 mL — same vial, half the volume, double the concentration, and unit counts stay readable. Second, run twice-daily or triple-daily protocols where the vial empties inside stability naturally. Third, accept the partial discard and budget 1.5 vials per month at single-daily 100 mcg.

Storage and shelf life for GHRP-6

To maintain peptide integrity, unreconstituted vials of GHRP-6 powder are stored under refrigeration. After the peptide is dissolved using a sterile diluent like bacteriostatic water, the resulting solution must also be kept in a cold, dark environment, typically a refrigerator. A personal log might note the date of reconstitution to ensure the solution is used within its period of maximal stability, which is generally considered to be four to six weeks.

How the GHRP-6 vial duration calculator works

A 5 mg GHRP-6 vial covers 50 doses at 100 mcg — math says nearly 2 months at single-daily, but stability caps usable life at 4-6 weeks. Plan refills around stability, not the dose count, especially for once-daily users.

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 GHRP-6, a 0.1 mg dose, and 7 dose per week, the vial covers 50 doses, or about 7.1 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.

Common GHRP-6 vial-planning mistakes

  • Analyzing data on a day-to-day basis instead of observing the aggregate trends in appetite and sleep quality scores over a multi-week timeline.

Frequently asked questions about GHRP-6 vial duration

How does the GHRP-6 vial duration calculator estimate weeks of supply?
It floors total doses (vial mg ÷ dose mg) then divides by doses per week. For this GHRP-6 example — a 5 mg vial, 0.1 mg per dose, 7 dose/week — that's floor(5 ÷ 0.1) ÷ 7 = about 7.1 weeks. Flooring matters: a partial dose left in the vial doesn't count. Once-daily GHRP-6 hits the stability ceiling before emptying — plan to discard rather than push past 6 weeks.
Should I plan refills around the math, or around stability?
Whichever runs out first. Math says GHRP-6 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. Once-daily GHRP-6 hits the stability ceiling before emptying — plan to discard rather than push past 6 weeks.
Does titrating the GHRP-6 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. Once-daily GHRP-6 hits the stability ceiling before emptying — plan to discard rather than push past 6 weeks.
What if I take GHRP-6 less often than the default cadence here?
Drop the doses-per-week field. With 7 dose/week the example vial lasts about 7.1 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. Once-daily GHRP-6 hits the stability ceiling before emptying — plan to discard rather than push past 6 weeks.

Related on Peptide Pilot

Track GHRP-6 vials automatically

Download on the App StoreiPhone · Free · No credit card
Download on theApp Store→