TB-500 at a glance
| Detail | What the sources say |
|---|---|
| What it is | A synthetic peptide the FDA lists as a thymosin beta-4 fragment (LKKTETQ) |
| Approved medicine? | No |
| Market | Sold as a research chemical |
| FDA review | Briefing for the Pharmacy Compounding Advisory Committee, July 2026 |
From the sources to the app
| What the sources say | What PepLabo does with it |
|---|---|
| TB-500 is not an approved medicine and has no label [1]. | PepLabo pre-fills nothing: the calculator has no default amount, and the use period after mixing stays empty until you enter it. |
| It is sold on the research-chemical market, outside approved channels [1]. | Lot and expiry fields keep each vial distinct, and a label scan fills in the text from the vial. |
| The FDA reviewed TB-500-related bulk substances for its Pharmacy Compounding Advisory Committee in July 2026 [1]. | The library entry lists the status with sources and dates, so you can see what has changed. |
What PepLabo does and does not do
| PepLabo does | PepLabo does not |
|---|---|
| Record each dose with the date, time and amount you enter, and the site for injections | Suggest a dose, a schedule change or a medicine |
| Remind you 15 minutes before, at the dose time, and 30 minutes after a missed dose | Tell you what to do after a missed dose; the leaflet and your prescriber do |
| Put check-ins, weight and doses on one timeline | Interpret symptoms or judge progress |
| Keep your records on your phone, with no account needed to track | Use analytics, advertising or tracking SDKs, or write to Apple Health |
| Create a PDF of your dose log for your clinician (Pro) | Replace your clinician or pharmacist |
