Pentadeca arginate (PDA)
Pentadeca arginate (PDA): marketed as a BPC-157 relative. No published studies of PDA itself were found.
Not an approved drug; sold by some compounding pharmacies and clinics as a BPC-157 alternative.
Used for
- Sold for tendon, joint and gut healing, the same uses as BPC-157
How it works
Sellers describe it as BPC-157 in an arginate salt form, said to be steadier or easier to take than BPC-157. No paper in PubMed describes its structure, how it acts or how the body handles it, so treat any such claim as marketing.
What the research shows
- A PubMed search for pentadeca arginate, pentadecapeptide arginate and BPC-157 arginate returns no papers: PDA itself has no published animal or human studies.
- Whatever is believed about PDA is borrowed from BPC-157, which is mostly rat work from one research group and has no completed phase 2 trial. A 2026 review of BPC-157 found no approved formulation, no validated dose and clinical data from fewer than 30 people in uncontrolled pilots.
- Even for BPC-157, a different form (salt, sequence or vial) cannot be assumed to behave the same way.
Dosing
Dosing isn’t listed on the public site. In the app, each published option is shown with its source (a drug label, a clinical guideline, a trial or community reports) and can be turned into a protocol you review.
Work out the units to draw for your vial →Side effects
- Not studied: none are documented. Expect what is reported for BPC-157: injection-site irritation, nausea, dizziness
Cautions
- No human or animal safety data exist for PDA itself.
- Everything in the BPC-157 entry about blood-vessel growth and cancer applies by assumption.
- Quality varies by pharmacy: ask for a certificate of analysis and a licensed 503A or 503B source.
- The abbreviation PDA also means patent ductus arteriosus (a heart condition) and other things: it matches this entry only as a stand-alone word.
- Prohibited in tested sports (WADA).
Storage
Unmixed powder: freezer or fridge, away from light.
Once mixed with bacteriostatic water: fridge; the common rule is to use it within 28 days.
There is no label or published stability data for this one, so treat these as habits, not limits.
Stability once mixed
No stability data. A short chain without obvious weak spots; community reports of 4 weeks or more in the fridge, untested.
Heat, shaking, freezing a mixed vial, light and many needle punctures all speed breakdown. Toss it if it turns cloudy, grows specks or changes color.
Reference only, not medical advice. Written for this app from the cited research. Doses marked community-reported are not from trials.