What is TB-500?
TB-500 is the research name for a fragment of thymosin beta-4, a protein your body uses in cell movement and repair — it helps cells migrate to where damage is. It's studied for tissue recovery, mostly in preclinical work.
These articles explain the mechanism, review the evidence honestly, and answer the practical questions people bring — dosing, timelines, and how it compares with BPC-157. Prescription-only, with a licensed provider reviewing every request. If you're choosing between TB-500 and BPC-157, the comparison article walks through both.
36 articles on this topic
-
1984 Nobel Prize in Chemistry: Making Peptides
Bruce Merrifield’s bead method made peptides easier to build. The breakthrough explains modern synthesis—and why purity testing still matters.
-
BPC-157 for Ligaments: Animal Evidence, Human Gaps
The ligament claim comes from a rat knee study. Human trials have not shown that BPC-157 repairs an ACL tear or shortens recovery from a sprain.
-
What Is Bacteriostatic Water? Meaning and Safety
Bacteriostatic water contains a preservative that limits bacterial growth. The medication’s instructions decide whether it is the right mixing liquid.
-
TB-500 Myths: Ten Claims Checked Against Studies
TB-500's benefits in humans have not been established. Ten common claims get graded against the actual molecule, study and outcome behind them.
-
TB-500 News Update: October 2026
A new rat study adds tendon data, while the human evidence gap remains. July's FDA review and September's sports list answer different questions.
-
Peptide Myths: 10 Common Claims Checked
Ten things people say about peptides online, from "they're steroids" to "drug tests can't find them," graded against the studies and the rules that can actually answer them.
-
TB-500 FDA Review: Where It Stands After the Vote
TB-500 has never had an FDA-approved product. Its review for a federal compounding list ran from a 2022 nomination to a July 2026 committee vote, and FDA has not acted on that vote yet.
-
Wolverine Peptide Study: Use Is Up, Proof Isn't
A September preprint read de-identified doctors' notes and found new BPC-157 users up 33-fold since 2020, increasingly male and younger. It shows who is using it and where they get it, not whether it works.
-
WADA Prohibited List 2027: GLP-1s Off, BPC-157 On
WADA published its 2027 list on September 21. The weight-loss drugs stay on a watch list rather than the prohibited list, the peptides stay where they were, and a prescription is still not an exemption.
-
Who Discovered TB-500? The Full Story
The short answer starts with Teresa Low, Shu-Kuang Hu, and Allan Goldstein, who sequenced thymosin beta-4 in 1981. The seven-amino-acid fragment now called TB-500 came later, and the record does not name one inventor.
-
Gray Market Peptides: What Johns Hopkins Found
Johns Hopkins says the market for unverified peptide vials is growing much faster than the human evidence. The useful question is what a prescription and a pharmacy change.
-
BPC-157 Myths: 10 Claims Checked
Ten familiar claims about BPC-157, graded against the studies: what comes from rats, what has been observed in people, and what remains unknown.
-
KLOW Peptide Before and After: An Honest Timeline
There is no clinical before-and-after timeline for KLOW because no published study has tested the finished blend. Here is what component studies measured over three days to 12 weeks—and why those clocks are not a promise.
-
TB-500 10 mg: What the Vial Size Really Means
A 10 mg mark states the total peptide mass the vial is meant to contain. It is not a per-injection dose, a concentration, or proof that an unverified vial contains what its label claims.
-
Oral TB-500: Why Capsules Lack Human Evidence
There is no human evidence that a TB-500 capsule delivers intact peptide into the bloodstream. The published TB-500 and thymosin beta-4 work used injected or topical routes, so a capsule label cannot prove absorption or an effect.
-
Where to Inject KLOW Peptide: Abdomen or Thigh?
KLOW is given into the fatty layer beneath the skin, usually in an abdomen or thigh area named in the pharmacy directions. The exact boundaries and rotation plan come from the prescription, not from an online diagram.
-
BPC-157 WADA Status: Prohibited All Year Round
If you're tested in your sport, the answer is short. BPC-157 is prohibited all year round, a prescription doesn't change that, and the one exemption that could is unlikely to be granted, by USADA's own account.
-
TB-500 Half-Life: The Honest Answer Is Unknown
There is no reliable human half-life for the TB-500 fragment. The familiar one-to-two-hour estimate comes from the 44-amino-acid recombinant study molecule NL005, tested by a different route.
-
Peptide Research 2026: What Three Reviews Found
Three review papers landed within a few weeks of each other this summer. They agree the animal work is real, the human evidence is thin, and that gap is the thing worth understanding.
-
Paradigm Peptides: A Lab Certificate Is Not Proof
The Paradigm Peptides sentencing exposed a simple weakness in buying medicine from an unlicensed website: a polished lab certificate can be fake. The safer difference is an accountable chain—a prescriber, a named pharmacy and records regulators can inspect.
Page 1 of 2 · 36 articles