Mix the vial. Draw the right amount.
Enter three numbers from your sheet. It shows you the line on the syringe.
What you need
Your vial. Your sheet. Two minutes.
Before you start.
- This tool turns the three numbers on your sheet into the line to draw to on the syringe.
- Have the vial in front of you for the size on its label, and the protocol sheet from the quiz for the water and the dose.
- You get one number, the units on a standard insulin syringe, and a drawing of the syringe filled to it.
Step 01 of 5
What size is your vial?
It is printed on the label, in mg.
A U-100 syringe holds one hundred units in a millilitre, so a draw of ten units is a tenth of a millilitre. Below two units the marks are too close to read; more water makes the same dose a larger, readable draw.
What to do with the number.
Draw the syringe to the line the readout names, no further. The small lines are single units and the numbered lines are tens.
Your sheet says which days and what time; the calculator only says how much. If the line is under two units, add more water next time you mix, and the same dose becomes a larger, easier draw.
Try it with an example.
See the answer before you type anything: a 10 mg vial, 2 ml of water and a made-up dose of 250 mcg.
How it works.
Strength is what is on the vial divided by the water you add: a 15mg vial in 1.5ml is 10mg per ml. Your dose divided by that strength gives millilitres. Multiply by 100 for units, because a U-100 syringe holds 100 units in every millilitre. So a 2mg dose at 10mg/ml is 0.2ml, which is 20 units. On a U-40 syringe the same 0.2ml reads 8 units, because that scale has 40 in a millilitre.
units = dose_mg × water_ml × 100 ÷ vial_mg
How to read it for your vial
The calculator does one sum, and it does the same sum for every vial on this site. What changes from vial to vial is the amount of powder in it and the amount of water the catalogue treats as standard, and those two numbers set the strength of the mix and therefore how many units on the syringe a given dose becomes. The sections below take every vial size in the Primara Labs catalogue in turn and say what the standard water is, what strength that makes, and how the units line moves when you use more or less water. The dose itself is on your results sheet, not here.
One rule underneath all of it: more water means more units for the same dose, less water means fewer. The amount of peptide in the syringe does not change. Only the volume you draw it in does, which is why a small dose is easier to measure with more water and a large dose is easier with less.
1000mg 10 ml · 100 mg per ml
NAD+ is the largest vial in the catalogue by a distance, and it takes the most water: 10 ml, for a mix of 100 mg per ml. The volume matters here more than anywhere else because this compound is pushed slowly, and a larger draw is easier to push slowly than a small one. Less water makes a stronger mix and a faster, less comfortable push. The calculator will show the units rising and falling with the water; the sheet's note about the speed of the push does not change. Taken 3 times per week.
80mg 2 ml · 40 mg per ml
KLOW Blend is the blend most protocols here are built around, and its vial is one of the strongest by weight. The standard water is 2 ml, for a mix of 40 mg per ml. Because the draw is taken every day, the catalogue keeps the water low so that a month of daily draws fits inside the vial's volume. Adding 4 ml makes each draw twice the units and does not change what is in it; the only cost is that the vial holds fewer days at the larger draw. Taken daily.
70mg 2 ml · 35 mg per ml
GLOW Blend sits beside its sibling blend and is mixed the same way: 2 ml of water, for a mix of 35 mg per ml. The same daily rhythm and the same reason for the low water. If your sheet moves you from one blend to the other, the calculator sum does not change, only the powder in the vial does. Taken daily.
50mg 5 ml · 10 mg per ml
GHK-Cu at this size takes 5 ml, for a mix of 10 mg per ml. It is the other vial here diluted more than most, and for the same reason as the repair peptide: its draws are small, and more water turns a fine draw into one you can read. With 2.5 ml the draws become hard to measure; with the standard water they are not. Taken daily.
20mg 4 ml · 5 mg per ml
BPC-157 at this size takes 4 ml, for a mix of 5 mg per ml. It is one of the two vials here that is diluted more than most, because its doses are small and a small dose in a little water is a draw too fine to read. With the standard water the sheet's draws are comfortably visible on the syringe. Using 2 ml would make them half the size; using 8 ml would make them easier still to read but empty the vial's water faster than its powder. Taken daily.
15mg 1.5 ml · 10 mg per ml
Retatrutide and Tirzepatide come in this size, and it is the vial most people mix first. The catalogue standard is 1.5 ml of bacteriostatic water, which makes a mix of 10 mg per ml. It is a small amount of water for a strong vial, on purpose: the sheet's doses for this compound become draws that sit in the easy-to-read middle of the syringe. Add 3 ml instead and every draw on the sheet doubles in units. Add 0.75 ml and every draw halves, which pushes the early ones below the line the calculator flags as hard to measure. Taken once per week, so one mix lasts the longest of anything here.
10mg 2 ml · 5 mg per ml
MOTS-c, TB-500, Tesamorelin, Semax, Selank and DSIP share this vial size, and the catalogue mixes all of them the same way: 2 ml, for a mix of 5 mg per ml. The sizes match but the sheets do not, because each is taken on its own rhythm, from 2 times per week to days that need it. The calculator sum is identical for every one of them; what differs is the dose you enter, which is on the sheet next to the compound. Using 4 ml doubles every draw; using 1 ml halves it.
5mg + 5mg 2 ml · 5 mg per ml
CJC-1295 + Ipamorelin is two peptides in one vial, which is why the size is written as a pair. The catalogue treats the vial as the total of the two and standardises on 2 ml, for a mix of 5 mg per ml. The sheet's draw is one draw containing both, in the ratio the vial holds, so the calculator is used once for the pair and not once for each. Add 4 ml and the draw doubles in units with the ratio unchanged. Taken nightly, 5 days on, 2 off.
None of this tells you how much to take. It tells you how the number on the syringe follows from the water you added, for the vial in your hand, so that the line on your sheet and the line on the calculator agree. If they do not, the water is the first thing to check. The injection guide covers the first draw and the storage guide what happens to a mixed vial after.
Questions
What is a unit?
A mark on an insulin syringe. On the standard U-100 syringe there are one hundred units in a millilitre, so one unit is a hundredth of a millilitre. It measures volume, not the amount of peptide, which is why the water you add changes the number.
Where do I find my dose?
On the protocol sheet from the quiz, beside each compound, in mg or mcg. If you do not have a sheet yet, the quiz makes one in three minutes. This tool never suggests a dose of its own; the only numbers it offers are the labelled example.
What if my vial is a size that is not listed?
Tap Another size and type the milligrams printed on the label. The presets are the sizes in the catalogue, but the arithmetic is the same for any vial.
Do I need to be exact?
To the nearest half unit is what the syringe can show, and that is what the readout gives you. The exact figure sits beside it in small type. If the two differ by less than half a unit, draw to the marked line.
How much water should I add?
The amount your sheet says. Most vials on this site are mixed with 2 ml; a few take more. More water is never wrong, it only makes each draw larger in units, which is useful when a draw is too small to read.
Three minutes. Built from your answers.
Get startedRelated
Nothing you enter here leaves your phone. Longevity Manila builds your protocol from your answers. Fulfilment is by Primara Labs, our partner and supplier. Take it to a doctor who knows you before you begin.
The calculator is built into every protocol.
Fourteen questions, and it arrives already filled in with your first compound at its starting dose, next to the week-by-week doses.