TB-500 (Thymosin Beta-4)

Once reconstituted with bacteriostatic water, peptides should be stored at 2-8°C (refrigerator) and used within 2-4 weeks for optimal potency. Some peptides may remain stable for up to 8 weeks when properly refrigerated.

Storage guidelines for reconstituted peptides:

• Refrigerator storage (2-8°C): 2-4 weeks recommended maximum
• Freezer storage (-20°C): Possible but not recommended due to freeze-thaw damage
• Peptides containing Met, Cys, or Trp have shorter shelf life due to oxidation
• Peptides containing Asn, Gln are more prone to degradation in solution
• Create multiple aliquots to avoid repeated freeze-thaw cycles if freezing is necessary

Note: We recommend using reconstituted peptides within 2 weeks when possible, as potency gradually decreases over time.

Always use bacteriostatic water (BAC water) containing 0.9% benzyl alcohol for reconstituting peptides intended for multiple doses. Bacteriostatic water prevents bacterial growth and maintains sterility over several weeks of use.

Water types comparison:

• Bacteriostatic Water (RECOMMENDED): Contains 0.9% benzyl alcohol preservative, multi-use safe, prevents contamination, stable for 28 days after first puncture
• Sterile Water: No preservative, single-use only, risk of contamination with multiple punctures, not recommended for peptides
• Tap Water (NEVER USE): Contains impurities, minerals, chlorine, bacteria - will destroy peptides and cause contamination
• Distilled/Boiled Water (NOT RECOMMENDED): Not sterile, lacks antimicrobial properties, risk of bacterial growth

Use this simple formula to calculate dosage:

Concentration = Total mg in vial ÷ Total ml of water added

Example calculation:

• You have: 5mg BPC-157 vial
• You add: 2ml bacteriostatic water
• Concentration: 5mg ÷ 2ml = 2.5mg/ml
• If your dose is 250mcg (0.25mg): 0.25mg ÷ 2.5mg/ml = 0.1ml (10 units on insulin syringe)

Common reconstitution volumes:

• 2mg vial + 2ml water = 1mg/ml concentration
• 5mg vial + 2ml water = 2.5mg/ml concentration
• 10mg vial + 2ml water = 5mg/ml concentration

Tip: Use our online peptide calculators or create a dosing chart when you reconstitute to avoid calculation errors.