How many units is 5mg of MOTS-c depends on dilution: 1 mL of water gives 100 units on a U-100 syringe. Here's the math, a dilution chart, and safety notes.
There is no single answer to how many units is 5mg of MOTS-c, because units measure liquid volume while milligrams measure powder weight. On a standard U-100 insulin syringe, 5 mg of MOTS-c equals 100 units when the vial is reconstituted with 1 mL of bacteriostatic water, 200 units with 2 mL, and 500 units with 5 mL. The number of units always depends on the concentration you create, not on the 5 mg of peptide by itself.
Units Measure Volume, Milligrams Measure Mass
A U-100 insulin syringe is calibrated so that 100 units equals 1 mL of liquid. That calibration describes volume only; it says nothing about how much peptide is dissolved in the liquid.
The only bridge between units and milligrams is concentration. Concentration is the peptide mass in milligrams divided by the diluent volume in milliliters. Change the volume and every unit on the syringe suddenly represents a different amount of MOTS-c.
This is why two researchers can both hold a 5 mg MOTS-c vial and draw completely different unit counts for the same milligram amount. The vial is identical; the reconstitution is not.
5 mg MOTS-c Reconstitution Chart
The table below converts a single 5 mg vial into units on a U-100 syringe at common diluent volumes.
| Diluent added | Concentration | Total units in vial | Units per 1 mg |
|---|---|---|---|
| 1 mL | 5 mg/mL | 100 units | 20 units |
| 2 mL | 2.5 mg/mL | 200 units | 40 units |
| 2.5 mL | 2 mg/mL | 250 units | 50 units |
| 5 mL | 1 mg/mL | 500 units | 100 units |
| 10 mL | 0.5 mg/mL | 1,000 units | 200 units |
Notice that the total units in the vial climb as you add more water, but the amount of peptide never changes. Adding diluent makes each unit weaker, not the vial larger.
For example, 2 mL of water in a 5 mg vial creates a 2.5 mg/mL solution, so 1 mg equals 40 units and the whole vial holds 200 units. The same vial with 1 mL of water creates a 5 mg/mL solution, so 1 mg equals 20 units and the vial holds 100 units.
How to Calculate Units for Any Peptide Vial
- Write down the total peptide mass in the vial, which is 5 mg here.
- Decide exactly how much diluent you will add, and record it.
- Divide mass by volume to get concentration in mg/mL.
- Divide 100 by the concentration to find how many units equal 1 mg.
- Multiply that figure by your target amount in mg to get the units to draw.
Example: a 5 mg vial reconstituted with 2.5 mL gives a 2 mg/mL solution. Dividing 100 by 2 gives 50 units per mg, so 0.5 mg equals 25 units on a U-100 syringe.
Always recheck the arithmetic with a second method or a reconstitution calculator, and write the concentration and date on the vial label. Volume errors are the most common source of measurement mistakes in research settings.
The Same Unit Math Applies to GLP-1 Medications
The conversion problem is identical for prescription drugs measured in units, which is why so many people also search how many units is 2.5mg of semaglutide or type how many mg is 50 units of tirzepatide into Google. Every one of those questions requires knowing the concentration of the specific vial or pen.
Compounded semaglutide, for instance, is commonly sold at 1 mg/mL, 2.5 mg/mL, or 5 mg/mL, so a query like how many units is 1 mg of semaglutide has three different correct answers depending on the bottle in hand. Someone asking how many units of semaglutide is 2.4 mg is usually holding a 2.4 mg/mL product, where the answer is 100 units — but that only holds at that exact concentration.
Working backward follows the same rule: how many mg is 60 units of semaglutide depends entirely on the labeled concentration. Brand-name pens sidestep the confusion because they are fixed-dose devices with no unit markings at all.
What MOTS-c Is Studied For
MOTS-c is a mitochondrial-derived peptide that has been examined in preclinical models for its role in metabolic regulation, insulin sensitivity, and exercise capacity. Most published work uses cell cultures and animal models, and human data remain limited.
Research protocols describe amounts in milligrams or milligrams per kilogram, not units, so the units question is really a syringe-measurement question rather than a scientific one. MOTS-c is not FDA-approved for human use in the United States, and it is sold as a research chemical rather than a medication.
Storage and Safety Basics
Lyophilized MOTS-c is generally stored frozen and protected from light, while reconstituted peptide is typically refrigerated and used within a few weeks. Repeated freezing and thawing of a reconstituted vial can degrade the peptide.
- Use bacteriostatic water rather than plain sterile water if the vial will be punctured more than once.
- Swab the stopper with alcohol and use a fresh needle for every draw.
- Never share a vial or a syringe with another person.
- Label each vial with the concentration and the reconstitution date.
- Speak with a healthcare professional before using any research peptide, and treat online dosing charts as estimates rather than medical advice.
Quick Answer Checklist
- 5 mg in 1 mL = 100 units total, or 20 units per mg.
- 5 mg in 2 mL = 200 units total, or 40 units per mg.
- 5 mg in 5 mL = 500 units total, or 100 units per mg.
- Units are meaningless until you know the concentration of the solution.
Frequently Asked Questions
How many units is 5mg of MOTS-c if I mix it with 1 mL of water?
Dissolving 5 mg of MOTS-c in 1 mL of bacteriostatic water creates a 5 mg/mL solution, which is 100 units total on a U-100 syringe. At that concentration, 1 mg equals 20 units. If you use 2 mL of water instead, the identical vial holds 200 units and 1 mg equals 40 units.
How much bacteriostatic water should I add to a 5 mg MOTS-c vial?
There is no universal standard, and the right volume depends on the concentration you want. Many people use 1 mL to 2 mL because those volumes create easy-to-measure solutions of 5 mg/mL and 2.5 mg/mL. Record the exact volume you used so future unit calculations stay accurate.
Is MOTS-c FDA-approved for human use?
No. MOTS-c is not FDA-approved for human use in the United States and is sold as a research chemical, not a prescription medication. Human safety and efficacy data are limited, so anyone considering it should consult a licensed healthcare professional first.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.