⚠️ Disclaimer

TB-500 is a research compound. It is not approved by the FDA or any regulatory body for human use. This article is for educational and informational purposes only. Nothing here constitutes medical advice. Consult a qualified physician before considering any peptide use.

The half-life of TB-500 is approximately 2-3 hours. This means dosing 2x weekly (loading phase), weekly (maintenance) is typical to maintain stable levels. The half-life directly affects how long TB-500 remains active and influences optimal injection timing.

What Is the Half-Life of TB-500?

The half-life of TB-500 is approximately 2-3 hours. This is the time it takes for blood concentration to drop by 50% after administration.

Understanding half-life is essential for designing effective dosing protocols — it determines how often you need to administer TB-500 to maintain therapeutic blood levels.

What Does TB-500's Half-Life Mean for Dosing?

With a half-life of approximately 2-3 hours, TB-500 requires dosing 2x weekly (loading phase), weekly (maintenance) to maintain stable levels. The standard dosage of 2-5 mg (loading), 2 mg (maintenance) via subcutaneous or intramuscular injection accounts for this pharmacokinetic profile.

After approximately 4-5 half-lives, TB-500 reaches steady-state concentration — the point where the amount being absorbed equals the amount being eliminated. For TB-500, this occurs within the first few days of consistent dosing.

When Is the Best Time to Inject TB-500?

Optimal timing depends on your research goals. A half-life of approximately 2-3 hours means peak blood levels occur shortly after injection and decline predictably.

Common timing approaches: morning injection for daytime activity, pre-bed injection for overnight effects, or split dosing (2x weekly (loading phase), weekly (maintenance)) for more stable levels throughout the day.

How Does TB-500's Half-Life Compare to Similar Peptides?

TB-500 is a 43-amino acid peptide. Its half-life of approximately 2-3 hours positions it with a shorter duration of action compared to some alternatives in this class.

Shorter half-lives require more frequent dosing but allow for more precise control. Longer half-lives are more convenient but carry risk of accumulation.

Calculate Your TB-500 Dose

Use our free peptide dosing calculator to get exact reconstitution math and syringe units for TB-500.

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Bottom Line: TB-500 Half-Life and Dosing

TB-500 has a half-life of approximately 2-3 hours, supporting the standard protocol of 2-5 mg (loading), 2 mg (maintenance) dosed 2x weekly (loading phase), weekly (maintenance) over 4-6 weeks loading, then ongoing maintenance.

Read our TB-500 dosage guide for complete protocol details.

Complete Guide

TB-500 : Thymosin Beta-4, Research Evidence & Protocols

Read the Full Guide →

Related Reading

Research-Grade Sourcing

If you're going to research TB-500, source matters. These are the suppliers WolveStack has vetted for purity and third-party testing.

Ascension → Browse TB-500

Particle → Browse TB-500

Limitless → Browse TB-500

Frequently Asked Questions

What is TB-500?

TB-500 (Thymosin Beta-4 Fragment (TB-500)) is a 43-amino acid peptide. Naturally occurring peptide present in virtually all human and animal cells. It is researched for wound healing, tissue repair, inflammation reduction, hair regrowth, cardiac repair, flexibility improvement.

What is the recommended TB-500 dosage?

Common dosages: 2-5 mg (loading), 2 mg (maintenance) administered 2x weekly (loading phase), weekly (maintenance) via subcutaneous or intramuscular injection. Cycle length: 4-6 weeks loading, then ongoing maintenance. Half-life: approximately 2-3 hours. Use our peptide calculator for exact reconstitution math.

What are the side effects of TB-500?

Generally well-tolerated. Temporary lethargy, head rush, or mild headache reported in some users. Minor injection site irritation possible. No organ toxicity documented in research.

Is TB-500 safe?

TB-500 has shown a favorable safety profile in research. Not FDA-approved. Available as a research chemical. Banned by WADA in athletic competition. All research should follow appropriate safety protocols.