SS-31 dosage chart: how many units on the syringe

How to read the chart

Three inputs decide the number on the syringe: how much peptide is in the vial, how much bacteriostatic water you add, and the dose you are measuring. Change any one of them and the unit count changes.

The unit marks on a U-100 insulin syringe are a volume scale, not a dose scale. The label means the full barrel of one milliliter is divided into one hundred marks. The syringe has no way of knowing what is inside it. It reports volume only, which is why the same milligram figure lands on a different mark depending on how much water went into the vial.

So the reading order is: find your vial size, find the water volume you used, then find your dose. The intersection is the mark you draw to. If you used a water volume that is not in the table, the table does not apply to your vial.

More water does not mean more peptide

The clearest pattern in the chart is that a 5 mg dose from a 50 mg vial moves from 10 units to 20 units to 30 units as the water goes from 1 mL to 2 mL to 3 mL. Nothing about the dose changed. The peptide was spread through more liquid, so more liquid is needed to carry the same milligram amount.

The concentration column is where this is visible. A 50 mg vial in 1 mL sits at 50 mg/mL. The same vial in 2 mL sits at 25 mg/mL, and in 3 mL at 16.67 mg/mL. Concentration is the bridge between milligrams and volume, and it is the only figure that carries information about both.

The practical consequence is that the water volume is a choice you make once per vial and then live with. Write it on the vial. A reconstituted vial with no note on it is unreadable, because the powder gives no visual clue about how much water was added, and every unit figure on this page becomes wrong if you guess the wrong volume.

Doubling the dose doubles the units

The second pattern worth noticing is that within any single water volume, the relationship is straight. At 1 mL, 5 mg is 10 units and 10 mg is 20 units. At 3 mL, 5 mg is 30 units and 10 mg is 60 units. Twice the dose, twice the volume, every time.

That linearity is useful as a sanity check. If you calculate a figure yourself and it does not scale cleanly against a neighboring row, you have made an arithmetic error somewhere.

It also shows why thin dilutions get awkward at larger doses. A 10 mg dose from a 50 mg vial in 3 mL reads 60 units, which occupies most of a U-100 barrel. That is a mechanical fact about how much liquid fits in the syringe, not a statement about whether that dose is appropriate.

Vial sizes and what this chart covers

SS-31 is listed in 10 mg and 50 mg vials. The computed chart on this page is built on the 50 mg vial across all three water volumes.

If you hold a different vial size, do not borrow a row from this table. The concentration is different, so the unit count is different, and the error is silent. The syringe will look correct.

The method transfers even when the numbers do not. Divide the vial contents by the water volume to get concentration, then divide your dose by that concentration to get the volume to draw. Read that volume against the U-100 scale.

What this page does not answer

There is no reliable human pharmacokinetic data for SS-31. This site therefore makes no claim about its half life, how long it takes to clear, whether it accumulates with repeated administration, or how any of that would shape a schedule. Anyone stating those figures with confidence is not working from data we can verify.

SS-31 is not approved by any regulator for human use. Nothing here is medical review. This page does not tell you what dose to take, how often, what effects to expect, what side effects occur, whether it is safe, or whether it does anything at all. Those are clinical questions and this is an arithmetic reference.

The dose amounts of 5 mg and 10 mg appear here because they are the figures seen in product listings. Their presence in the chart is a description of what is being sold, not a recommendation. If you need a dose decision, that belongs with a clinician who can see your situation, not with a conversion table.

What we do not know

We hold no reliable human pharmacokinetic data for SS-31, so this site makes no claims about its half life, how long it takes to clear, or how it accumulates. The arithmetic below concerns concentration and volume only.

This page answers arithmetic and handling questions. It does not tell you what dose to take, what to expect, or whether anything is appropriate for you, and there is no medical review behind it.

Common questions

How many units is 5 mg of SS-31?

It depends entirely on how the vial was reconstituted. From a 50 mg vial in 1 mL of bacteriostatic water, 5 mg is 10 units on a U-100 syringe. The same 5 mg from that vial in 2 mL is 20 units, and in 3 mL is 30 units. The milligram figure alone is not enough to answer the question.

Does adding more bacteriostatic water make the dose weaker?

No. It changes the concentration, not the amount of peptide you deliver. A 5 mg dose is 5 mg whether it arrives in 10 units or 30 units of liquid. More water simply means each unit mark carries less peptide, so you draw further up the barrel for the same dose.

How much water should I add to an SS-31 vial?

This site does not tell you which volume to choose. The chart covers 1 mL, 2 mL and 3 mL because those are the volumes in common use. Larger volumes give finer resolution on the syringe scale for small doses, smaller volumes keep the draw compact. Both are mechanical trade-offs, not clinical ones.

What is the half life of SS-31?

We do not publish one. There is no reliable human pharmacokinetic data for SS-31, so this site makes no claim about its half life, clearance or accumulation. The chart on this page concerns concentration and volume only and says nothing about timing.

Can I use this chart for a 10 mg vial?

No. The computed rows here are for a 50 mg vial. A different vial size at the same water volume has a different concentration, so every unit figure shifts. Use the same method instead: vial contents divided by water volume gives concentration, and dose divided by concentration gives the volume to draw.

Is SS-31 approved for human use?

No. It is not approved by any regulator for human use. This page exists to make the milligram to unit conversion transparent, and carries no assessment of safety, effectiveness or appropriateness.