Peptides and SARMS
TB 500
Manufacturer: Stealth Labs
Pharmaceutical name: Thymosin beta 4
Pack: vial (10mg per vial)
STEALTH - Shipped without label
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TB 500 From Stealth Labs
TB 500 is a research peptide supplied by Stealth Labs. The active substance is Thymosin beta 4, a 43 amino acid peptide that occurs naturally in the body. Each vial contains 10 mg of lyophilized powder, and Stealth Labs ships it without a label.
Most peptides in this field act on hormones or receptors. Thymosin beta 4 works differently, it binds actin inside cells and helps them move to where repair is needed. That mechanism is why it sits in so many tissue studies.
TB 500 And The Repair Process
When tissue is damaged, repair cells have to travel to the site and rebuild the structure. Actin gives those cells their shape and movement. Thymosin beta 4 helps regulate actin, and researchers study whether that step is faster or cleaner with the peptide present.
Research Areas For TB 500
- Connective tissue - tendon and ligament healing models.
- Skin repair - tested for the speed of wound closure.
- Muscle stress - examined after hard mechanical load.
- Joint research - looked at in models of stiffness and swelling.
- Vascular studies - studied for how new blood vessels form in damaged tissue.
All of this is laboratory research. TB 500 is not a medicine and is not sold for human use.
Vial Details
- Manufacturer: Stealth Labs
- Pharmaceutical name: Thymosin beta 4
- Pack: vial, 10 mg per vial
- Form: lyophilized powder for stability
- Shipping note: Stealth Labs products ship without a label
The 10 mg vial covers several test runs from a single batch, and the unlabeled packaging keeps the parcel discreet.
Storing TB 500
Keep the sealed vial cool, dark and dry. After mixing, keep it in a fridge between 2 and 8 degrees Celsius and use it within a few weeks. Do not shake it, roll it between your hands instead, and use clean tools every time.
Stacks Other Labs Use
Repair research usually runs more than one peptide. The standard pairing is a BPC 157 vial from British Dragon or Axiolabs. Some labs add GHK-Cu 50mg by Dragon Pharma for the collagen side of the work. If you want TB 500 from another maker, we also stock the Dragon Pharma TB 500. All of them sit on our Peptides and SARMS page.
Questions We Get About TB 500
Why is it called TB 500?
The name is a short version of Thymosin beta 4. TB stands for thymosin beta, and 500 was added as a label.
Do I need a prescription?
No. You can buy TB 500 without prescription from our shop.
What size vial is this?
A single 10 mg vial of lyophilized powder, enough for several research runs.
Order TB 500
Adding TB 500 to your cart takes a minute. Compare it with the Dragon Pharma and British Dragon versions first if you want to test makers side by side, or head to the Peptides and SARMS category for the rest of our repair peptides.
| Tier | Amount per dose | What it means |
|---|---|---|
| Dose ranges | ||
| Low | 100 mcg | Cautious starting amount |
| Moderate | 250 mcg | Amount most often used in research |
| High | 500 mcg | Top of the range typically discussed |
| Key facts | ||
| Approval status | Research peptide only; the FDA has not approved any dose for human use | |
| Half-life | Not fixed; varies between reports | |
| Usual route | Injection under the skin (subcutaneous) | |
| Frequency | Once or twice per day | |
| Highest dose studied | 500 mcg | |
| Possible side effects | Irritation at the injection spot, nausea, digestive upset | |
| Disclaimer | Figures are math conversions for reference only, not medical advice | |
| Reconstitution calculator | |
|---|---|
| Find out how much bacteriostatic water to add and how many units to draw on your syringe for your TB-500 dose. | |
| Peptide in the vial |
mg
|
| Bacteriostatic water |
mL
|
| Dose you want |
mcg
|
| Syringe |
|
| Results | |
| Choose your values and press Calculate. | |
| Concentration | — |
| Amount to draw | — |
| Units to draw | — |
| Doses in the vial | — |
| How the math works | |
| 1. Find the concentration | Divide the peptide in the vial by the water added. For example, 5 mg ÷ 2 mL = 2.5 mg/mL, which is 2,500 mcg/mL |
| 2. Work out the volume | Divide the dose by the concentration. For example, 100 mcg ÷ 2,500 mcg/mL = 0.04 mL |
| 3. Convert to units | On a U-100 syringe, multiply the mL by 100. For example, 0.04 mL = 4 units |
| 4. Check the syringe | Make sure the amount fits the syringe you are using |
| Worked example | |
| Vial | 5 mg TB-500 |
| Water | 2 mL bacteriostatic water |
| Dose | 100 mcg |
| Syringe | 100 units (1 mL) |
| Concentration | 5 mg ÷ 2 mL = 2,500 mcg/mL |
| Amount to draw | 100 mcg ÷ 2,500 mcg/mL = 0.04 mL, which is 4 units on a U-100 syringe |
| Disclaimer | |
| This tool does math conversions only. It does not choose a dose for you or confirm product quality, safety, or medical suitability. | |
Reconstitution & Storage
Mixing a peptide takes about a minute. Keeping it good afterwards is the part most people get wrong, so follow the guide below and then store the vial the way we describe underneath it.
How to Reconstitute
Follow the five steps in the guide above. Bring the vial and the diluent to room temperature first, add the bacteriostatic water slowly down the inside wall so it does not foam and swirl gently until the powder is fully dissolved. Never shake the vial and never spray the bacteriostatic water straight onto the powder.
How to Store the Mixed Peptide
Once it is mixed, the vial goes back in the refrigerator at 2 to 8°C (35.6°F to 46.4°F) and stays there until you have used it. Write the mixing date on the vial so the clock is visible, not remembered.
- Temperature: a normal fridge, 2 to 8°C (35.6°F to 46.4°F). Not the freezer, not a kitchen cupboard.
- Shelf life: about 4 weeks. Past 28 days, discard it.
- Light: keep it in the box or a dark drawer. Direct light degrades peptides.
- Handling: swab the stopper before each draw, use a fresh needle and never shake the vial. Swirl gently if it needs mixing.
- Freezing: do not freeze a mixed solution. Ice crystals and freeze-thaw cycles cut potency.
- Dispose if: the liquid turns cloudy, changes colour, or shows visible particles.
Unmixed powder is far easier to store. Keep it dry, out of light, at room temperature for short periods or at -20°C for the long term and reconstitute only what you plan to use.
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