TB-500 tracker
for iPhone.
TB-500's reputation rests on its long tissue half-life: a couple of doses per week, often paired with BPC-157, often run in a loading phase before settling into maintenance. The cadence is light, but the bookkeeping isn't — phases change, the stack partner runs daily, the vial maths differ. Peptide Protocol holds the schedule shifts and the calculator together so the tracking doesn't outweigh the dose.
Download Peptide Protocol — FreeTB-500 at a glance
Verified against the current FDA prescribing information / regulatory record. For mechanism, primary-literature sourcing, and a fuller pharmacology view, follow the cross-link to our sister site.
| Class | Actin-binding repair peptide (research; synthetic Thymosin Beta-4 fragment) |
|---|---|
| Brand names / aliases | Thymosin Beta-4 fragment, TB500 |
| Regulatory status | Research-only — no FDA-approved human label |
| Evidence level | FDA regulatory notice / literature |
| Plasma half-life | No FDA-approved label half-life. Tissue-active over days due to actin-binding kinetics. |
| Approved presentation | No FDA-approved marketed presentation. |
| Dose initiation | No verified label dosing. Self-protocols typically run 2–2.5 mg twice weekly during loading — community convention only. |
| Escalation | No labeled escalation. WADA bans use in competition. |
| Common stack pairings | BPC-157 (canonical recovery stack) |
| Side-effect notes | Limited human safety data. FDA flagged for compounding-risk contexts. |
| Key caveat | TB-500 is unapproved and is on the FDA's compounding-risk list. It is not the same as the official Thymosin Beta-4 (Tβ4) label product, which itself has no FDA-approved standard human label. |
For full TB-500 background and primary-literature sourcing, see the TB-500 guide on peptide-calc.app.
Built around TB-500 protocols
Three things twice-weekly recovery protocols actually need.
Phase-aware schedule
Define a loading phase and a maintenance phase with different cadences and doses. The app switches the schedule on a date you set — calendar, reminder, calculator output all update in lockstep.
Volume-friendly calculator
2 mg of TB-500 reconstituted at 2 mg/mL is a full 1 mL — a lot for one site. The calculator shows the unit count and a hint when the volume warrants splitting across two sites in the same session.
Stack-aware Today screen
If you're running TB-500 with BPC-157, the Today screen surfaces both — daily BPC-157 with rotating site, twice-weekly TB-500 with its own. Inventory tracks each vial separately so you know which one to refill first.
What it looks like
TB-500 tracking — common questions
Does Peptide Protocol have a TB-500 preset?
Yes — TB-500 is supported in the calculator. Because it has no FDA-approved human label, the app does not ship a default dose; you enter your vial mass, BAC water volume, and target dose, and the calculator returns the exact unit count for U-100, U-50, or U-30 syringes. Most community protocols target 2–2.5 mg per dose, which lands at roughly 20–25 units on a U-100 at standard reconstitution.
How does the app handle a TB-500 loading phase?
Build it as two scheduled phases. Loading: 2.0–2.5 mg twice weekly for 4–6 weeks. Maintenance: 2 mg every 1–2 weeks. The protocol-builder lets you switch cadence on a scheduled date, and the app's calendar will reflect the new pattern automatically — no manual re-entry.
Can I run TB-500 and BPC-157 as a healing stack?
Yes. Both peptides are first-class protocols. Run them as a stack: TB-500 twice weekly for systemic recovery, BPC-157 daily for local healing. The Today screen shows everything due across both, the rotation map keeps the sites separate where you want them, and the inventory panel tracks each vial's remaining doses independently.
Related peptide trackers
Track your TB-500 on your iPhone.
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This page is fact-checked against the current regulatory record. Last verified 2026-05-09.
Not medical advice. TB-500 is a research peptide. It is not FDA-approved for any human indication and is restricted in many jurisdictions, including under WADA rules in competition. The information on this page is informational and does not constitute a recommendation to use the compound. Always consult a licensed healthcare professional before starting, modifying, or stopping any compound. See the full TB-500 reference for primary sources.