As of September 2026, the FDA and the EMA have not approved pentadeca arginate. No peer-reviewed study exists under this name. Sellers and compounders use the name for a modified BPC-157, which itself has no completed randomized human trial. Nearly all information about it comes from marketing material. Nobody can tell you from the outside what is in a vial sold under the name.
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What is pentadeca arginate?
Pentadeca arginate is a name used by peptide sellers and compounders for a chemically modified version of BPC-157. The change is an added arginine salt, which is claimed to improve stability. Nearly all information about it comes from compounding-pharmacy and supplement marketing, and it has no peer-reviewed science of its own.
Does pentadeca arginate work?
Nobody knows. No peer-reviewed study in people or in animals exists under this name, and BPC-157 itself has no completed randomized human trial.
What we found. 0 completed randomized trials. No PubMed-indexed study of pentadeca arginate itself, as of 2026. 1 rat study and 1 human program on the list, both of BPC-157. The human program does not count here: it concerned a different product and was not completed or published in full.
| Study | Tested in | Status | What it shows |
|---|---|---|---|
| BPC-157 rat colocutaneous fistula study | Animals | Published | Reported that BPC-157 promoted fistula healing in rats. It did not test pentadeca arginate |
| BPC-157 (PL14736) inflammatory bowel disease program | People | Early trials referenced. Not completed or published in full | BPC-157 was put forward for bowel disease trials in Croatia. No completed approval trial in people is publicly documented |
| Pentadeca arginate itself | Lab dishes | No study found | No PubMed-indexed study of pentadeca arginate itself was found as of 2026 |
Animal studies of BPC-157 exist. They cannot tell you what pentadeca arginate does in people.
How we count a trialIs pentadeca arginate safe?
Nobody knows. Pentadeca arginate has no published, peer-reviewed safety study of its own, in people or in animals. Its use is based on extrapolation from BPC-157's animal data. So the compound itself is an open question. The vial is a second one, and it comes next.
Is pentadeca arginate legal?
- United States
- Not approved by the FDA.
- Compounding
- The record gives no compounding status for pentadeca arginate itself. Its parent compound, BPC-157, was nominated for possible future compounding eligibility, and no final rule has followed.
- European Union
- No EMA marketing authorisation.
- Sport
- Not named on WADA's list. That is not clearance.
Not medical advice. Approval and sport status as of . Medical disclaimer
What is in a vial sold as pentadeca arginate?
Pentadeca arginate reaches people through peptide sellers and compounders, and nearly all information about it comes from their marketing. The record's central concern is that the product, as sold, has not been independently verified as a molecule. A "research use only" label guarantees nothing about purity. A certificate of analysis counts only if it names your lot number, a lab with no stake in the result, and the method used. Purity and identity are separate tests.
Three questions to ask the seller:
- Which lot number is this certificate for?
- Who ran the test, and are they independent of you?
- Does the report confirm identity by mass spectrometry, or purity alone?
What don't we know?
- Whether it does anything in people. No peer-reviewed study exists under this name.
- Whether it is safe. It has no peer-reviewed safety study of its own.
- Whether the added arginine salt improves stability, as claimed. No peer-reviewed study of pentadeca arginate tests the claim.
- Whether the body handles it the way it handles BPC-157. No peer-reviewed study of the arginate form exists.
- What is in any given vial.
The other side
The record says people use pentadeca arginate mostly hoping for tissue repair or recovery. What a person feels after using it is real to them. It cannot tell the compound apart from the vial, or from recovery that time would have brought anyway.
What would change this record?
- A peer-reviewed, independently run study of the arginate salt form itself: either how the body handles it or its safety. A study of BPC-157 in general would not count.
Three questions to ask next
- Is BPC-157 safe?
- What does 'research use only' actually mean?
- How do you read a certificate of analysis?
Ask better questions.
More questions about pentadeca arginate
Is pentadeca arginate the same as BPC-157?
- No. It is a name sellers and compounders use for a chemically modified BPC-157, with an added arginine salt. BPC-157 has a published sequence and published animal research. Pentadeca arginate has no peer-reviewed study of its own.
Is pentadeca arginate FDA approved?
- No. The FDA has not approved pentadeca arginate or BPC-157, and neither has an EMA marketing authorisation.
Has pentadeca arginate been tested in humans?
- Not in any peer-reviewed study. The record found no peer-reviewed human or animal study under this name, and no PubMed-indexed study of it as of 2026.
Is pentadeca arginate more stable than BPC-157?
- That is the claim, and nobody knows. The record says the added arginine salt is claimed to improve stability. It found no peer-reviewed study of pentadeca arginate that tests the claim.
Is PDA banned in sport?
- It is not named on WADA's list. That is not clearance.
Record checked on . Each source shows the date it was checked.
In the same group
Often confused with BPC-157. BPC-157 is the parent compound, with a published sequence and published animal research, while pentadeca arginate is a modified version with no peer-reviewed study of its own.