Semax Reconstitution & Dosage Calculator
This free Semax calculator turns your vial size, the bacteriostatic water you add, and your target amount into a concentration, a draw volume, and the exact units on a U-100 insulin syringe. Semax is a short peptide analog of ACTH(4-10) studied in nootropic and neuroprotection research, and it is handled in micrograms — so small draws are the norm and dilution choice matters a lot for readability.
Semax reconstitution calculator
Syringe
U-100 insulinPeptide in vial
Target amount
Bacteriostatic water
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Quick summary
- Converts vial size (mg), bacteriostatic water (mL), and target amount (mcg or mg) into concentration, draw volume, and U-100 units.
- Built for the microgram amounts Semax is typically studied at, with reference math for 10 and 30 mg vials.
- Educational research and measurement tool only — it does not diagnose, treat, or recommend an amount.
What this Semax calculator does
This calculator does one job well: it turns your vial size, the amount of bacteriostatic water you add, and your target amount into a concentration (mg/mL), a draw volume (mL), and the matching units on a U-100 insulin syringe. Change any input and the result updates instantly.
Semax ships as a freeze-dried powder. Before it can be measured into a syringe it has to be reconstituted — dissolved in bacteriostatic water. How much water you add sets the concentration, and the concentration sets how many units each amount works out to. The presets above cover the most common Semax vial setups; use the custom fields for anything else.
How to use the Semax calculator
Pick your syringe
Choose the U-100 insulin syringe you'll draw with. Smaller syringes (0.3 mL / 30u) have finer lines, which helps when the draw is small.
Enter your vial and water
Set the milligrams in your Semax vial and the bacteriostatic water you added. Together these set the concentration.
Set your target amount
Toggle mg or mcg and pick (or type) the amount you're measuring for. The calculator does the conversion for you.
Read the draw
The result panel shows concentration, draw volume, and the exact U-100 units to pull, plus how many doses your vial contains.
Semax reconstitution math, explained
The math is short. Concentration = vial size ÷ bacteriostatic water. Draw volume = target amount ÷ concentration. Units = draw volume × 100 (a U-100 syringe reads 100 units per mL). The table below shows common Semax setups and the units for a 1 mg amount at each.
| Vial size | Bac water | Concentration | Units per 1 mg |
|---|---|---|---|
| 10 mg | 1.0 mL | 10 mg/mL | 300 mcg = 3 units |
| 10 mg | 2.0 mL | 5 mg/mL | 300 mcg = 6 units |
| 10 mg | 5.0 mL | 2 mg/mL | 300 mcg = 15 units |
| 30 mg | 3.0 mL | 10 mg/mL | 300 mcg = 3 units |
| 30 mg | 6.0 mL | 5 mg/mL | 300 mcg = 6 units |
Semax amount-to-units reference
How common amounts convert to U-100 syringe units at two example concentrations. These are arithmetic conversions for reference, not a recommendation of any amount.
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 200 mcg | 0.04 mL | 4 units |
| 300 mcg | 0.06 mL | 6 units |
| 600 mcg | 0.12 mL | 12 units |
| 1000 mcg (1 mg) | 0.20 mL | 20 units |
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 200 mcg | 0.10 mL | 10 units |
| 300 mcg | 0.15 mL | 15 units |
| 600 mcg | 0.30 mL | 30 units |
| 1000 mcg (1 mg) | 0.50 mL | 50 units |
Mixing, color & storage tips
Dilute more for readable microgram draws
Semax amounts are small. At 10 mg/mL a 300 mcg target is only 3 units — hard to measure accurately. Using more water (2 mg/mL) turns the same amount into 15 units, which is far easier to read on the barrel.
mcg vs mg
Semax references usually write amounts in micrograms. 1 mg = 1000 mcg, so a 300 mcg entry and a 0.3 mg entry produce an identical draw. The calculator accepts either — just match the unit toggle.
Mixing without foam
Add the bacteriostatic water slowly down the inside wall of the vial, then swirl gently until the powder dissolves. Do not shake.
Storage and vial life
Keep the dry powder cold and dark. After reconstitution, refrigerate, keep it out of light, and plan around a limited usable window. Do not freeze a reconstituted vial.
Semax supplies checklist
A simple reconstitution shopping list. Confirm vial size and batch documentation before you buy.
Semax
- Batch COA on every vial
- Third-party purity tested
- U.S. fulfillment, discreet shipping
Semax — frequently asked questions
What does this Semax calculator tell me?
It converts your vial size, bacteriostatic water volume, and target amount into concentration in mg/mL, draw volume in mL, and the matching units on a U-100 insulin syringe. It is a measurement tool, not a recommendation.
Is the Semax calculator free?
Yes. It runs entirely in your browser, is free, and requires no account or signup.
How much bacteriostatic water do I add to a 10 mg Semax vial?
That depends on how readable you want the draw. 10 mg with 2 mL makes 5 mg/mL, so a 300 mcg target is 6 units. Using 5 mL makes 2 mg/mL and the same amount becomes 15 units — easier to measure precisely.
How many units is 300 mcg of Semax?
At 5 mg/mL it is 6 units (0.06 mL). At 2 mg/mL it is 15 units (0.15 mL). Units always depend on your specific concentration.
What is the difference between mcg and mg?
They measure the same thing at different scales: 1 mg equals 1000 mcg. A 1000 mcg entry and a 1 mg entry produce an identical draw.
Is Semax FDA-approved?
No. Semax is not an FDA-approved drug in the United States. It is sold strictly as a research-use-only compound, not for human or veterinary use.
Is this medical advice?
No. This page and calculator are for education and research planning only. They do not diagnose, treat, or recommend an amount.
