What is thymopentin (TP-5)?
If you are looking up thymopentin dosage, you most likely have a vial and want to turn an amount into syringe units; that is the math on this page. Thymopentin is a synthetic pentapeptide, a chain of five amino acids: Arg-Lys-Asp-Val-Tyr (RKDVY). That sequence matches residues 32 to 36 of thymopoietin, a hormone made in the thymus, and it is the short stretch researchers identified as carrying much of the parent hormone’s activity in laboratory studies.
On labels you will see it as thymopentin, TP-5 peptide or TP5. It is one of several thymus-derived research compounds, alongside thymalin, thymogen and thymosin alpha-1, but it is a distinct molecule with its own sequence. This page makes no claims about effects in people. It handles the math of thymopentin reconstitution and reading the result on a U-100 syringe.
How much BAC water for a thymopentin vial?
Research vials are usually sold as thymopentin 10mg or 50 mg of freeze-dried powder. The mg in the vial stays fixed; the BAC water you add sets the concentration. The chart shows micrograms per unit on a U-100 syringe for common water volumes.
| BAC water | 10 mg vial | 50 mg vial |
|---|---|---|
| 1 mL | 100 mcg/unit 10 mg/mL | 500 mcg/unit 50 mg/mL |
| 2 mL | 50 mcg/unit 5 mg/mL | 250 mcg/unit 25 mg/mL |
| 5 mL | 20 mcg/unit 2 mg/mL | 100 mcg/unit 10 mg/mL |
| 10 mL | 10 mcg/unit 1 mg/mL | 50 mcg/unit 5 mg/mL |
Each cell shows mcg per unit on a U-100 syringe (100 units = 1 mL) and the resulting concentration.
Read across a row to compare the two vial sizes at the same water volume, or down a column to see how more water lowers the micrograms in each unit. The 50 mg vial is large for a peptide, so at small volumes each unit holds a lot, and a single unit of misreading matters more. That is why the chart includes larger volumes. The BAC water to peptide ratio guide explains the math behind it.
Worked example: thymopentin reconstitution in syringe units
The calculator runs three steps. Vial mg ÷ water mL gives the concentration. The amount you enter ÷ that concentration gives the volume in mL. Volume in mL × 100 gives U-100 units. For example, if the amount you already have is 1 mg, and the vial is a 10 mg vial with 2 mL of water added:
The math: 10 mg ÷ 2 mL = 5 mg/mL (5,000 mcg/mL), which is 50 mcg per unit. 1 mg ÷ 5,000 mcg/mL = 0.2 mL = 20 units on a U-100 syringe.
That amount is an arbitrary number chosen because it comes out clean. It is not a suggestion. The same steps work for a 50 mg vial; only the concentration changes. If your amount is in micrograms, remember that 1 mg = 1,000 mcg and set the calculator unit to match. The mg to mcg conversion guide covers that step.
Thymopentin dosage calculator: what the numbers mean
The thymopentin dosage calculator answers one question: how many syringe units line up with an amount you already have, for your vial size and the water you actually added. It does not set, suggest or check a dose, schedule or frequency, and nothing here should be read as one. Any thymopentin dosage question belongs with product labeling and a qualified professional.
Units are the same size on every U-100 syringe: 100 units = 1 mL and 1 unit = 0.01 mL. A 0.3 mL or 0.5 mL syringe just holds fewer of them. If a result needs more units than your syringe holds, the math is still right; it simply exceeds that syringe’s capacity. You can check the calculator math by hand with the same formula.
Thymopentin reconstitution notes from suppliers
Supplier directions differ, so your vial’s label comes first. Some suppliers specify bacteriostatic water; others list sterile water. As a short peptide, TP-5 generally dissolves readily, and some product sheets say to swirl gently until clear rather than shaking. Many give one storage temperature for the dry powder and another after mixing. For a 50 mg vial, some suppliers list a larger water volume than for the 10 mg size; that only changes the concentration.
Enter the exact volume you used so the unit count matches what is in the vial. If you are comparing it with another thymus-derived peptide, thymalin is a different product with its own label and uses the same math.
Is thymopentin FDA-approved?
No. Thymopentin is not an FDA-approved drug in the United States, and research-labeled vials sold online are not an approved medicine. There is no US-labeled product to compare a research vial against, so the only numbers you can rely on are the mg printed on the vial and the water volume you measured.
A correct calculation cannot confirm a vial’s identity, purity, sterility or stability; the calculator assumes the label is accurate. Treat every result as arithmetic, not as a statement that a product is safe or suitable for any use.
Thymopentin (TP-5) FAQ
Is thymopentin the same as TP-5?
Yes. TP-5 is the common short name for thymopentin, the five-amino-acid peptide Arg-Lys-Asp-Val-Tyr.
How much BAC water do you add to thymopentin 10mg?
There is no single required volume. The chart shows how 1, 2, 5 and 10 mL change the micrograms per unit. Follow the product labeling, then enter the volume you used in the calculator.
Does this page give a thymopentin dosage?
No. It converts an amount you already have into mL and U-100 syringe units for your vial size and water volume. It does not recommend a dose, schedule or frequency.
Is thymopentin the same as thymalin or thymosin alpha-1?
No. All are described as thymus-related peptides, but they are different compounds with different compositions and are sold as separate products.
Can I use the calculator for a thymopentin 50mg vial?
Yes. Enter 50 mg as the vial size and the water volume you added, and the calculator works out the concentration and units the same way.