Check the claim
What the evidence actually shows
For the short piece called TB-500, the main finding is that no published study in people was found.
In the US, medicines are reviewed by the Food and Drug Administration, known as the FDA.
Questions to ask about a treatment claim
- Was it the short piece called TB-500 or the whole protein?
- Were people studied, or only animals or cells?
- Was the problem the same as yours?
- What changed, and what did not?
A useful explanation gives you a paper and tells you what it can and cannot show.
What the tests can show
Start with the substance being offered
A study only answers a question about what it actually tested.
- The FDA review, checked in September 2026, found no published article describing people receiving TB-500.
- The FDA also found no human study of how TB-500 moves through the body or affects it.
- Human research on full-length thymosin beta-4 does not establish results for TB-500.
What the lab result can say
A lab test can raise a question. It cannot settle whether an injection helps a person with an injury.
- In the cell-dish test described by FDA reviewers, TB-500 did not speed the closing of a scratch in a layer of cells.
- That limited test does not prove TB-500 can never work; the FDA found too little evidence to support a wound-healing effect.
- The FDA found no animal study testing TB-500 itself for wound healing.