Protocol

TB-500 Dosage & Protocol Guide (2026)

April 22, 2026
7 min read
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The Bottom Line
TB-500 is a synthetic fragment of Thymosin Beta-4, a naturally occurring peptide found in nearly all human and animal tissues. It is one of the most studied peptides for tissue repair, inflammation reduction, and recovery -- and as of April 2026, it is among the 12 peptides removed from the FDA's 503A compounding ban, meaning it can again be compounded legally by licensed US pharmacies with a prescription.

This guide covers standard dosing, the loading vs maintenance protocol, reconstitution, and how to stack TB-500 with BPC-157.

Standard TB-500 Doses

TB-500 is dosed in milligrams (mg), not micrograms -- it is a larger peptide than BPC-157. Vials are typically sold as 5mg lyophilized powder.

Protocol PhaseDoseFrequency
Loading phase4-10mgTwice weekly for 4-6 weeks
Maintenance2-6mgOnce weekly or biweekly
Low-dose maintenance2mgOnce every 2 weeks

Most practitioners use a loading phase of 4-10mg per week (split into 2 injections) for the first 4-6 weeks to build up tissue saturation, then drop to a lower maintenance dose. Total cycle length is typically 4-12 weeks.

How to Reconstitute TB-500

TB-500 is a lyophilized powder that requires reconstitution with bacteriostatic water (BAC water).

Standard reconstitution for a 5mg vial:

BAC Water AddedConcentrationVolume per 2.5mg dose
1mL5mg/mL0.5mL (50 units on insulin syringe)
2mL2.5mg/mL1.0mL
2.5mL2mg/mL1.25mL

Recommended: Add 1-2mL of BAC water to a 5mg vial. This gives a concentration that keeps injection volumes manageable.

Steps:

  1. Wipe vial top with alcohol swab
  2. Draw BAC water into syringe
  3. Inject water slowly down the inside wall of the vial -- do not aim directly at the powder
  4. Swirl gently until dissolved
  5. Store refrigerated (2-8 degrees C), use within 4-6 weeks

Use the peptide reconstitution calculator to calculate the exact volume per injection for any dose.

Injection Protocol

TB-500 is injected subcutaneously or intramuscularly:

  • SubQ: 27-31g insulin syringe, abdomen or thigh. Most common approach.
  • IM: Some practitioners prefer IM for TB-500 due to the larger volume involved with higher doses.
  • Site: Unlike BPC-157, TB-500 is generally injected systemically (not near the injury site) -- it circulates and acts on tissues throughout the body.
  • Frequency: Twice weekly during loading; once weekly or biweekly for maintenance.

TB-500 vs BPC-157: How They Differ

TB-500BPC-157
MechanismActin-binding, cell migrationGrowth factor upregulation, angiogenesis
Dose unitmgmcg
Dosing frequencyWeekly or biweeklyDaily or twice daily
Injection siteSystemic (anywhere)Near injury site or systemic
Primary use caseSystemic tissue repair, inflammationTendon, gut, localized healing
StackingCommonly stacked with BPC-157Commonly stacked with TB-500

Stacking TB-500 with BPC-157

The "healing stack" of TB-500 + BPC-157 is one of the most common peptide protocols used for injury recovery. The rationale: they work through complementary mechanisms, with TB-500 providing systemic anti-inflammatory and cell migration effects while BPC-157 promotes localized angiogenesis and growth factor upregulation.

Common stacking protocol:

  • BPC-157: 250-500mcg SubQ twice daily (near injury site if applicable)
  • TB-500: 5-10mg SubQ twice weekly (loading phase), systemic site

Run both compounds for 4-8 weeks, then assess. Some practitioners continue BPC-157 on a maintenance dose while tapering off TB-500.

Tracking Your TB-500 Protocol

TB-500 is typically used for a specific purpose -- an injury, chronic inflammation, or post-surgical recovery. Tracking your protocol and response gives you actionable data instead of guesswork.

What to track:

  • Dose and injection schedule
  • Subjective pain or mobility score (1-10)
  • Sleep quality and resting heart rate (from Apple Health or Google Health Connect)
  • Weekly progress notes

Track your TB-500 protocol from day one

  • Log every dose with injection site and timestamp
  • Built-in reconstitution calculator
  • Half-life visualization between doses
  • Correlate with health data from Apple Health / Google Health Connect
Regimen peptide and GLP-1 tracker app screenshot

Frequently Asked Questions

TB-500 is commonly stacked with BPC-157 for enhanced recovery. See the April 2026 FDA ruling for the latest on compounding access.

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Regimen is a tracking tool, not a medical service. We do not provide medical advice. Always consult your healthcare professional before starting, changing, or stopping any medication protocol.

Ready to track your protocol?

  • Smart reminders so you never miss a dose
  • Track weight, photos, and progress over time
  • Medication level curves for every compound
Regimen peptide and GLP-1 tracker app screenshot
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