Pick the vial, the water you added and the dose. Get the exact draw in units for the syringe in your hand.
Draw to3.0units0.03 mL
Step 1 of 4
1How many mg are in your vial?
Vial strengthamount printed on the vial
2How many mL of water did you add?
Bacteriostatic water addedhow much water you added
3What dose do you want to convert?
Target doseenter the dose you want to convert
This vial holds 10,000 mcg in total.
4Which syringe are you using?
Syringe typematch the label on your syringe
U-100 insulin syringe · 1 mL · lines every 2 units · 1 unit = 0.01 mL
Draw to
3.0units
0.03 mL · 3.33 mg/mL · 33 mcg per unit · 100 doses per vial
3.0 units on a U-100 insulin syringe · 1 mL · lines every 2 units, which is 0.03 milliliters. The nearest syringe line is 4 units.
This falls between two syringe lines. The nearest line on this U-100 syringe is 4 units. Open the syringe details below to see the difference.
10 mg ÷ 3 mL = 3.33 mg/mL → 33 mcg/unit · 100 mcg = 0.030 mL =3.0 units
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Show the math and syringe details+
Can this syringe show the result clearly?
This draw falls between syringe lines. The exact volume is 3.00 units, but a U-100 syringe has a line every 2 units. Using the nearest line gives 4 units — a 33.3% difference, or 33 mcg.
Want an easier syringe number?
2 mL of water instead5.00 mg/mL · 50 mcg/unit2.0 uon a syringe line
2.5 mL of water instead4.00 mg/mL · 40 mcg/unit2.5 u20.0% off
Adding more water makes the mixture less concentrated, so the same dose uses more syringe units. It does not change how much peptide is in the vial.
This setup is in the address bar — every input is part of the link.
Educational math, not medical advice — dosing decisions belong to a licensed clinician. The tabs above also plan a schedule week by week and count how many doses one vial holds.
How to use the calculator
STEP 1
Enter the amount in the vial
Use the total amount printed on the vial, in mg.
STEP 2
Enter the water you added
Use the amount of water added to that vial, in mL.
STEP 3
Enter the dose you want to convert
Choose mg or mcg, then match the result to your syringe.
Pinealon is a peptide three amino acids long, from the St Petersburg institute that also produced Epitalon. Papers abbreviate it EDR. It is sold for memory, focus and mental sharpness in later life, as capsules or as powder for injection.
The memory claim rests on one sentence in one review. Following its three references leads to another review, a study in old rats, and a patent. People have taken it and the results were published, almost all in Russian. Two of those studies gave it alongside a second peptide, so neither separates the two. The one study that measured chemistry found two effects pointing the wrong way.
Examples using a 10 mg Pinealon vial
Each row starts with the same 10 mg vial and changes only the amount of water. More water makes the mixture less concentrated, so the same dose uses more syringe units.
◆ How the water amount changes the resultdose used: 100 mcg
For a 10 milligram vial: bacteriostatic water added, resulting concentration, micrograms per U-100 unit, and the draw for a 100 mcg dose.
Water added
Concentration
Per U-100 unit
Draw for 100 mcg
Nearest syringe line
2 mL
5.00 mg/mL
50.0 mcg
2.0 u · 0.020 mL
exactly 2 u
3 mL
3.33 mg/mL
33.3 mcg
3.0 u · 0.030 mL
4 u · 33.3% off
The vial, water and dose shown here are the calculator’s starting example for Pinealon. Replace them with your own values. Every result in the table is calculated from those inputs.
Drawn from once a week at 100 mcg, a 10 mg vial yields 100 doses — about 100.0 weeks of supply. No cited source says how long the mixed vial keeps, so no storage window is shown.
A vial that holds a hundred doses, and a draw at the edge of legibility
The one quantity ever published for a person is a tiny fraction of what this vial holds, so the powder divides into around a hundred draws. Every one of them reads near the bottom of a U-100 barrel, where a printed line is about as wide as the error it hides.
3Open the mixing details — 3 notes
More water is the only lever, and it barely moves
The more dilute of the two listed volumes gives the larger draw, which is the direction you want on a quantity this small. It still lands only a single unit higher.
That is the whole of what the mixing choice can do here. Neither volume turns this into an amount a person can measure confidently by eye.
A hundred doses, and no window to weigh them against
At the published amount, one vial covers a very long stretch of twice-daily use. No cited source says how long the mixed vial keeps.
The missing figure matters more the more doses there are. At two draws it is an inconvenience; at a hundred it is the number that decides whether the vial is a supply or a waste.
The mistake: assuming a weekly rhythm
The supply estimate assumes one draw each week unless a published schedule says otherwise. The only published human use of this peptide was twice daily.
It was also swallowed rather than injected, so the rhythm and the route both come from a study that has nothing to say about a syringe.
Follow the memory claim back and it ends at a patent
One sentence carries this peptide’s whole reputation. It sits in the abstract of the only open review written about it in English, and it says the compound improves memory in older patients. That sentence has three references under it, and this page is what happens when you open all three.
4Read the supporting evidence — 4 supporting notes
A review, a rat study, and a document owned by the author
The first reference is itself a review. Its own abstract describes it as comparing two groups of neuroprotective peptides. That is a summary, not the study of patients it is being cited for.
People did take it, and one paper printed how much
None of that means nobody has been given it. Railway crews took capsules twice a day for two weeks, and the paper says exactly how much was in each one. That is the figure this tool opens on.
The published amount was swallowed
The human study used a capsule. A swallowed amount cannot be converted into an injected amount, and no published source has tested this peptide under the skin.
A hundred doses, and each draw barely visible
The published amount is a hundredth of what the single published vial holds. Divide the powder by it and the vial holds around two years of twice-daily use.
Units to dose at 3.33 mg/mL
Mix 10 mg into 3 mL and one U-100 unit carries 33.3 mcg. The table shows how much peptide is in each numbered syringe line. These are conversion examples, not suggested doses.
10Open the unit conversion table — 10 rows
Numbered U-100 syringe lines converted to volume and mass at 3.33 milligrams per milliliter.
U-100 line
Volume
Mass (mcg)
Mass (mg)
10 u
0.10 mL
333 mcg
0.333 mg
20 u
0.20 mL
667 mcg
0.667 mg
30 u
0.30 mL
1,000 mcg
1 mg
40 u
0.40 mL
1,333 mcg
1.333 mg
50 u
0.50 mL
1,667 mcg
1.667 mg
60 u
0.60 mL
2,000 mcg
2 mg
70 u
0.70 mL
2,333 mcg
2.333 mg
80 u
0.80 mL
2,667 mcg
2.667 mg
90 u
0.90 mL
3,000 mcg
3 mg
100 u
1.00 mL
3,333 mcg
3.333 mg
How the math works
Concentration — divide the amount in the vial by the water you added: mg ÷ mL = mg/mL. This tells you how many mg are in each mL.
Volume — the dose divided by that concentration: dose ÷ (mg/mL) = mL.
Units — on a U-100 syringe one unit is 0.01 mL, so mL × 100 = units. A U-40 unit is 0.025 mL, so the wrong barrel is a 2.5× error. That is why the calculator asks which one you have.
Rounding gap — the exact draw against the nearest syringe line: |exact − nearest line| ÷ exact × 100 = % difference.
Medically reviewed by Jennifer Montecillo, MD · non-practicing medical reviewer·Reviewed 2026-08-13·open the primary sources
Useful guides for this calculation
The math is only one part of the question. These guides cover the compound, published doses, side effects, mixing steps and supplies.