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PDA (Pentadeca Arginate)
Last reviewed: June 3, 2026 by The Peptide Catalog Team
An arginate-salt analog of BPC-157 marketed for tissue repair; no PDA-specific human studies exist — evidence is extrapolated from BPC-157. An arginate-salt analog of BPC-157 marketed for tissue repair. No PDA-specific human trials exist; evidence is extrapolated from BPC-157 research.
Overview
Core Benefits
Key AdvantagesThese are educational summaries of commonly discussed effects in wellness/regenerative contexts, not guarantees.
PDA (Pentadeca Arginate) Results Timeline
ProgressionTimeline is illustrative and non-guaranteed. Outcomes vary and are commonly discussed alongside training, nutrition, sleep, and cycling practices.
How It WorksTissue-Repair Peptide — Arginate Salt of BPC-157 (No PDA-Specific Studies)
Target → Signal → Effect → Outcomes
Same Peptide Sequence as BPC-157
PDA (Pentadeca Arginate) is the arginate-salt form of BPC-157 — the same 15-amino-acid GEPPPGKPADDAGLV sequence paired with an arginine counterion instead of acetate. The peptide that does the work is identical; only the salt differs. As a result, every proposed target and mechanism for PDA is inherited from the BPC-157 literature, not from any study on PDA itself.
Angiogenesis & Repair Signaling (BPC-157 Data)
In BPC-157 research, the peptide modulated angiogenesis — promoting new blood-vessel formation via the VEGFR2-Akt-eNOS axis — and supported fibroblast and tissue-repair activity in animal and cell-culture models. These are BPC-157 findings, largely preclinical, and none were measured on the arginate salt.
Theorized Tissue & Gut Repair
The marketed effects — faster tendon, muscle, and gut healing — are extrapolations from BPC-157's rodent tissue-repair and gastrointestinal work. There is no human clinical trial showing PDA (or BPC-157) accelerates recovery or rebuilds tissue in people, so the systemic effect is hypothesis, not demonstrated outcome.
Unestablished in Humans
Because there is no human efficacy data for PDA, there is no documented "felt" effect. Community reports mirror BPC-157 talk — gradual relief at a problem site for some, nothing for others. "No noticeable change" is fully consistent with what is currently known about PDA.
What Makes This Peptide Different
PDA is not a new peptide — it is BPC-157 in arginate-salt form. What distinguishes it is a marketing claim, not evidence: vendors say the arginine counterion makes it more stable than BPC-157 acetate. No published study tests that claim, no study compares the two head to head, and there are no peer-reviewed studies on pentadeca arginate as a distinct molecule. It rides BPC-157's reputation entirely.
PDA (Pentadeca Arginate) Vendors
Ion Peptide
EZ Peptides
Dosing ProtocolTissue Repair (BPC-157 analog)
Educational reference only. Individual responses vary. Consult healthcare provider before use.
Why This Dosing Protocol
Why short courses? Following BPC-157 convention, community sources run PDA in short 4-6 week courses targeted at a recovery window, on the assumption that repair effects, if real, persist once the tissue has healed — convention, not a tested PDA protocol.
Reconstitution Calculator
Dilution math and unit conversions. Prefilled using a common vial size for this peptide.
Open calculatorStorage & Handling
Storage at a glance
Proper storage temperatures, shelf life, reconstitution best practices, and travel tips for lyophilized and reconstituted peptides.
Handling specifics
Educational overview on storage, labeling, and traceability considerations for lab environments. Consult primary literature and vendor documentation for specifics.
- Freezer (-20°C): 1+ year
- Refrigerator (2-8°C): 1-3 months
- Room temperature: 2-3 weeks (emergency only)
- MUST refrigerate at 2-8°C
- 4-week maximum shelf life
- NEVER freeze after reconstitution
- Use bacteriostatic water for multi-dose
FAQ
What is PDA (Pentadeca Arginate)?
PDA is the arginate-salt form of BPC-157 — the same 15-amino-acid GEPPPGKPADDAGLV peptide sequence paired with an arginine counterion instead of acetate. It is marketed as a tissue-repair and healing peptide, with vendors claiming the arginate salt improves stability over BPC-157. Critically, there are no peer-reviewed studies on PDA as a distinct molecule and no human clinical trials — its reputation is borrowed entirely from BPC-157.
How strong is the evidence behind PDA?
Weak for PDA itself. A PubMed search for "pentadeca arginate" returns no peer-reviewed studies, and no trial has investigated PDA as its own molecule. The evidence cited for it is BPC-157 research — angiogenesis modulation and tissue repair in rodent and cell-culture models (Brcic et al., 2009; Seiwerth et al., 2021) — which is itself largely preclinical with minimal human data. Treat PDA as an early-stage commercial research peptide, not a proven therapeutic.
Is PDA better or stronger than BPC-157?
There is no published study comparing PDA and BPC-157 in any model. PDA is the same peptide with a different counterion; vendors claim the arginate salt is more stable, but no data shows that any stability difference translates to better healing. Any "upgraded BPC-157" framing is marketing, not evidence, and the community treats their doses as interchangeable.
What dose of PDA do people use?
There is no clinical-trial-established PDA dose. Because PDA is BPC-157's arginate salt, community and vendor sources borrow BPC-157's numbers — most commonly 250-500 mcg once or twice daily subcutaneously, run in short 4-6 week courses. These are community conventions extrapolated from BPC-157, not validated PDA protocols.
How long does reconstituted peptide last?
Once mixed with bacteriostatic water, peptides remain stable for up to 4 weeks when refrigerated at 2-8°C (36-46°F). Unopened powder can last 1+ year in the freezer. Get our complete Storage & Travel Guide.
Is this peptide legal to purchase?
Peptides sold "for research purposes only" are legal to purchase in the US, but are not FDA-approved for human use outside of specific medical applications. Always consult a healthcare provider before use.
New to peptides?
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PDA (Pentadeca Arginate) Research Articles
PDA Dosage: Pentadeca Arginate Protocols
PDA has no trial-established dose of its own — community protocols borrow BPC-157's numbers. The reconstitution math and an honest read on the evidence.
resultsPDA Results: What to Realistically Expect
There's no human timeline data for PDA. What community sources report week by week, why it's borrowed from BPC-157, and how to read it honestly.
reconstitutionPDA Reconstitution: 10mg Vial Mixing Chart
A 10mg PDA vial plus 2mL bacteriostatic water gives 5mg/mL. Because community doses are small, dilution choice matters. Charts, storage, and steps.
guidesBuy PDA (Pentadeca Arginate): Compare 2 Vendors
Compare 2 PDA (Pentadeca Arginate) vendors: from $44 a vial, best value $4.40/mg. Codes save up to 15%. Vial sizes, COA status, cost per week.
Disclosure: we may earn affiliate commission from qualifying purchases. Educational information only — not medical advice.