Vialog
Learn the arithmetic once.
Plain, careful guides to reconstitution and dosing — written the way Vialog works: showing every step, and claiming nothing it can't. No protocols, no recommendations. Just the maths, done slowly.
Reconstituting a 5 mg vs a 10 mg vial: what changes
Two vials, the same bottle of water, two different concentrations. Here is what actually moves on the syringe.
Read the guideDrawing up a peptide without wasting it: air, bubbles, dead space
A syringe reads position, not contents. Where bubbles come from, how to purge them, and the dead space that leaves the vial without ever reaching a mark.
Read the guideFive peptide reconstitution mistakes (and how to avoid them)
Most errors are not dramatic. A misread label, a slipped decimal, a rounded unit. Five that change the amount drawn, and the check for each.
Read the guideWhat concentration should you mix a peptide to?
Strong mix, few units and a crowded scale. Weak mix, more units and more volume. How to pick the concentration you can actually read.
Read the guideHow many doses in a peptide vial? The count, and the clock
A vial holds a fixed amount of peptide, so the count is one division. The water never changes it — but the last draw and the date on the glass can.
Read the guideHow to reconstitute a peptide blend (and split it into units)
A blend vial holds two or more peptides dried together at a ratio you cannot change. One water volume still sets everything — but the arithmetic runs once per component.
Read the guideHow to reconstitute tirzepatide, step by step
The branded product is already liquid. For the freeze-dried vial, the water volume is the only lever on whether the amount lands on a mark you can read.
Read the guideHow to reconstitute semaglutide, step by step
Two of the three things sold under this name are already liquid. For the one that is a powder, the water volume decides whether the amount lands on a line you can read.
Read the guideHow to reconstitute GHK-Cu, step by step
The copper peptide breaks two habits at once: the vial is ten times bigger than you are used to, and the solution is supposed to be blue.
Read the guideHow to reconstitute TB-500, step by step
The label gives you milligrams of powder. The water you choose decides what one mark on the syringe is worth — and that choice cannot be taken back.
Read the guideHow to read insulin syringe units: U-100 vs U-40
A unit is a mark of volume, fixed by the syringe. What sits inside that volume is a question about the vial — and a U-40 barrel changes the answer 2.5-fold.
Read the guideBacteriostatic vs sterile water: which one, and why it matters
Two clear liquids, nearly identical vials. The difference is a preservative — and it decides whether the vial is entered once or for weeks.
Read the guideHow long does a reconstituted peptide last in the fridge?
The 28-day number is real, but it is a rule about vials — not a measurement of your peptide. What it covers, and what shortens it.
Read the guideHow much bacteriostatic water should you add?
There's no single right amount — the water sets the concentration, and that decides your units. How to choose it.
Read the guideHow to reconstitute a peptide, step by step
The three conversions between powder and syringe — done once, slowly, with the maths shown.
Read the guideMilligrams, micrograms, units: the conversion that trips everyone
Is the number on the vial your dose, or the concentration? The difference is a factor of a thousand.
Read the guideHow many units do I draw? A worked BPC-157 example
One vial, one dose, one syringe — followed all the way to the mark on the barrel.
Read the guideSkip the pencil. Try the calculator.
Type in what's in your vial, the water, and your dose. Vialog shows the working and refuses any number your syringe can't draw.
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