Key Takeaway
Step-by-step guide to reconstituting Thymosin Beta-4 (TB-500). Bacteriostatic water ratios, mixing technique, dose calculations, and common mistakes.
Quick Answer: Thymosin Beta-4 how to reconstitute involves adding bacteriostatic water to the lyophilized (freeze-dried) peptide powder in the vial. For a typical 5 mg vial, add 1 to 2 mL of bacteriostatic water, gently swirl until dissolved, and store in the refrigerator. Never shake the vial. The process is identical to reconstituting other peptides and takes about 2 minutes. Your pharmacy should provide specific reconstitution instructions for your product .
Supplies Needed
- Lyophilized TB-4 vial (white powder or cake at the bottom)
- Bacteriostatic water (BAC water) with 0.9% benzyl alcohol preservative
- Drawing syringe: 1-3 mL syringe with 18-21 gauge needle
- Injection syringes: 29-31 gauge insulin syringes for dosing
- Alcohol swabs
Step-by-Step Instructions
Step 1[2]: Prepare Your Workspace
Wash hands thoroughly. Work on a clean, flat surface with all supplies within reach.
Step 2: Clean Both Vial Tops
Wipe the rubber stoppers on both the TB-4 vial and BAC water vial with separate alcohol swabs. Let air dry for 10 seconds.
Step 3: Draw Bacteriostatic Water
Using the drawing syringe, pull back the plunger to the desired volume of air. Insert needle into the BAC water vial, push the air in, invert, and draw your desired volume. Common reconstitution volumes:
| Vial Size | BAC Water | Concentration |
|---|---|---|
| 2 mg | 1 mL | 2 mg/mL (200 mcg per 10 units) |
| 5 mg | 1 mL | 5 mg/mL (500 mcg per 10 units) |
| 5 mg | 2 mL | 2.5 mg/mL (250 mcg per 10 units) |
| 10 mg | 2 mL | 5 mg/mL (500 mcg per 10 units) |
Step 4: Add Water to TB-4 Vial
Insert the needle into the TB-4 vial at an angle. Release the water slowly against the inside wall of the vial, not directly onto the powder. Let the water trickle down gently.
Step 5: Mix Gently
Do NOT shake. Gently roll the vial between your palms for 30 seconds. Let it sit for 1 to 2 minutes. Swirl gently if needed. The solution should become completely clear and colorless.
Step 6: Inspect and Store
Verify the solution is clear with no particles or cloudiness. Write the reconstitution date on the vial. Store in the refrigerator at 36-46 degrees F (2-8 degrees C).
Dose Calculations
Once reconstituted, calculate how many insulin syringe units equal your prescribed dose:
From the FormBlends catalog
TB-500 (Thymosin Beta-4)
Universal repair peptide for tissue regeneration · From $49/mo · compounded by a licensed 503A pharmacy, dispensed only after provider review.
Learn about TB-500 (Thymosin Beta-4) →Formula: Volume = (Dose / Concentration) x 100 units
| Prescribed Dose | Volume | Insulin Syringe Units |
|---|---|---|
| 750 mcg | 0.30 mL | 30 units |
| 1 mg (1000 mcg) | 0.40 mL | 40 units |
| 1.5 mg | 0.60 mL | 60 units |
| 2 mg | 0.80 mL | 80 units |
| 2.5 mg | 1.00 mL | 100 units (full 1 mL syringe) |
If your dose requires a large injection volume, consider using less BAC water for a more concentrated solution (e.g., 1 mL instead of 2 mL).
Common Mistakes
- Shaking the vial: Creates foam and can denature the peptide. Always swirl gently
- Spraying water on the powder: Direct force can damage the peptide. Aim along the glass wall
- Using sterile water without preservative: BAC water is required for multi-dose vials. Sterile water is single-use only
- Forgetting to date the vial: Without a reconstitution date, you can't track the 4-6 week usage window
- Leaving at room temperature: Return to the refrigerator immediately after drawing your dose
Frequently Asked Questions
How long does reconstituted TB-4 last?
When stored properly in the refrigerator with BAC water, reconstituted TB-4 remains stable for approximately 4 to 6 weeks. Use within this window for optimal potency.
What if the solution is cloudy?
A cloudy solution indicates contamination or degradation. Don't use it. Contact your pharmacy for a replacement. Clear, colorless solution is the standard.
Can I use the same reconstitution process as BPC-157 or CJC-1295?
Yes. The reconstitution process is identical for all lyophilized peptides: clean vials, add BAC water, swirl gently, store refrigerated. Only the volume of BAC water and resulting concentration differ based on the specific peptide and dose.
Medical References
- Goldstein AL, Hannappel E, Sosne G, Kleinman HK. Thymosin beta4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opin Biol Ther. 2012;12(1):37-51. [PubMed | DOI]
- Wilding JPH, Batterham RL, Calanna S, et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity. N Engl J Med. 2021;384(11):989-1002. [PubMed | ClinicalTrials.gov | DOI]
- Davies M, Færch L, Jeppesen OK, et al. Semaglutide 2.4 mg once a week in adults with overweight or obesity, and type 2 diabetes (STEP 2). Lancet. 2021;397(10278):971-984. [PubMed | ClinicalTrials.gov | DOI]
- Wadden TA, Bailey TS, Billings LK, et al. Effect of Subcutaneous Semaglutide vs Placebo as an Adjunct to Intensive Behavioral Therapy on Body Weight in Adults With Overweight or Obesity (STEP 3). JAMA. 2021;325(14):1403-1413. [PubMed | ClinicalTrials.gov | DOI]
- Rubino D, Abrahamsson N, Davies M, et al. Effect of Continued Weekly Subcutaneous Semaglutide vs Placebo on Weight Loss Maintenance in Adults With Overweight or Obesity (STEP 4). JAMA. 2021;325(14):1414-1425. [PubMed | ClinicalTrials.gov | DOI]
- Garvey WT, Batterham RL, Bhatt DL, et al. Two-year effects of semaglutide in adults with overweight or obesity (STEP 5). Nat Med. 2022;28(10):2083-2091. [PubMed | ClinicalTrials.gov | DOI]
Need Guidance?
At FormBlends, our team walks you through every step of peptide preparation so you feel confident handling your medication.
Disclaimer: This article is for informational purposes only and doesn't constitute medical advice. Thymosin Beta-4 isn't FDA-approved for any medical condition. Always consult with a licensed healthcare provider. Individual results may vary.
Ready when you are
TB-500 (Thymosin Beta-4)
Universal repair peptide for tissue regeneration · From $49/mo · compounded by a licensed 503A pharmacy, dispensed only after provider review.
Learn about TB-500 (Thymosin Beta-4) →