Recovery & Repair · Dosing reference

Pentadeca arginate (PDA) dosage

What the human evidence does and does not show, how long studies ran, and the arithmetic for working with vials.

Not approved — research use onlyNone established

Full research page Cycle-length evidence Compare Prefer Amiravo on Google

Regulatory status: Not approved — research use only
Human amounts: None established in humans
Route studied: —
Frequency: Not established
Half-life: Not established
Evidence grade: Not yet assessed
Vial sizes on the market: Not recorded
Other forms seen: —

What Pentadeca arginate (PDA) is

Pentadeca arginate (PDA) is a commercial name with no peer-reviewed publication, PubChem record or registered trial located, so its exact identity and its relationship to BPC-157 are not established in primary sources.

No mechanistic study of a substance named pentadeca arginate was located ^1. What can and cannot be inferred If PDA is a salt of BPC-157: a salt counter-ion (such as arginine, acetate or trifluoroacetate) would change formulation properties but not the peptide sequence; PubChem lists BPC-157 trifluoroacetate and free-base forms but no arginate ^4. If PDA is a modified sequence: no structure has been published, so… How it works →

Key evidence

Poolton et al., Acta Orthop Belg · 2026 · Humans (3 studies, n = 30) - BPC-157, not PDA
All three studies were judged poor quality and overall certainty very low; no PDA studies were included ^5. ⁵
Mateescu et al., Pharmaceutics · 2026 · Literature review - BPC-157, not PDA
Reported no approved formulation, no validated dosing regimen and no completed phase 2 trial for BPC-157 ^6. ⁶
PubMed, PubChem and ClinicalTrials.gov searches · 2026 · Not applicable
No records were returned for pentadeca arginate or its common name variants ^1,2,3. ¹

All studies on the research page

What the human evidence shows

No approved or established human dose

We searched PubMed and ClinicalTrials.gov and found no human studies that administered Pentadeca arginate (PDA). The research described on its page is from cells or animals, and animal amounts do not translate to people.

How long did human studies run?

No human study durations are recorded for Pentadeca arginate (PDA).

Cycle-length evidence for Pentadeca arginate (PDA)

Supplies and handling

Lyophilized vial
Sealed vial with the freeze-dried cake. Check the label, lot and the certificate of analysis before opening.
Sterile diluent
The diluent named on the product documentation. Bacteriostatic water contains benzyl alcohol; sterile water does not.
Graduated syringes
Sized to the volume being measured. U-100 insulin syringes are graduated in units where 100 units = 1 mL.
Alcohol prep pads
For wiping vial stoppers before each puncture.
Nitrile gloves
Clean gloves for aseptic handling.
Sharps container
Puncture-resistant container for used needles.

Step-by-step reconstitution guide Storage and transport accessories

Storage

No product-specific stability data were located; follow the supplier's documentation for the lot.

Lyophilized (unmixed) vials: typically stored cold and dry, away from light, as the documentation directs. Many are stable longer frozen.
Reconstituted vials: typically refrigerated (about 2–8 °C), protected from light and not frozen.
Bacteriostatic water contains benzyl alcohol, which inhibits bacterial growth in multi-use vials; sterile water has no preservative.

Handling mistakes and troubleshooting

Added the wrong volume of diluent: The concentration changes, not the amount of compound in the vial. Recalculate with the volume actually added and relabel the vial.
Shook the vial and it foamed: Let it settle in the refrigerator. Foam is a sign of agitation; some peptides aggregate when shaken. Note it on the label.
The solution is cloudy or has particles: Do not use it. Cloudiness can indicate incomplete dissolution, contamination or degradation. Record the lot and contact the supplier with the certificate of analysis.
The powder cake looks melted or shrunken before reconstitution: This can indicate the vial was exposed to heat or moisture. Record the lot and condition on arrival.
Liquid sprayed back when the needle was removed: Pressure built up in the vial. Withdraw a small volume of air while adding diluent to keep pressure neutral.

Regulatory status

Status: Not approved by the FDA for any use; no FDA, PubMed, PubChem or ClinicalTrials.gov record under this name was located as of 2026-10-24 ^1,2,3,7.
United States (FDA): No FDA approval or FDA document naming pentadeca arginate was located; FDA's compounding safety-risk page (current as of April 22, 2026) names BPC-157 but not PDA ^7.
Sport (WADA): Pentadeca arginate is not named individually in the 2026 Prohibited List text reviewed; S0 covers pharmacological substances with no current governmental approval for human therapeutic use and names BPC-157 as an example ^8.

Status varies by country and changes over time. How we describe regulatory status.

Pentadeca arginate (PDA) compared with related compounds

Compound	Status	Evidence	Human amounts	Half-life
Pentadeca arginate (PDA)	Not approved — research use only	—	None established	—
BPC-157	Not approved — research use only	C	None established	—
Thymosin beta-4	Investigational	B	Trial doses	Not reported numerically in the sources
TB-500	Not approved — research use only	C	None established	—
ARA-290	Investigational	B	Trial doses	—
B7-33	Not approved — research use only	C	None established	—

Frequently asked questions

What doses of Pentadeca arginate (PDA) have been studied in humans?

None that establish an amount. Pentadeca arginate (PDA) is not approved anywhere and we found no human studies that administered it. Amiravo does not publish community or vendor figures.

Is there an established Pentadeca arginate (PDA) cycle length?

No. We found no human studies that report treatment duration for Pentadeca arginate (PDA).

How much bacteriostatic water should be added to a Pentadeca arginate (PDA) vial?

There is no compound-specific volume. The diluent volume only sets the concentration: concentration = mass in the vial ÷ volume added (for example, 10 mg in 2 mL gives 5 mg/mL). The calculator on this page shows the arithmetic for any combination.

How many units is a given amount on an insulin syringe?

On a U-100 syringe, 100 units = 1 mL. Units for an amount = amount ÷ (concentration per unit). The calculator converts any amount you enter at the concentration you choose; a unit is a volume mark, not an amount of compound.

Is Pentadeca arginate (PDA) FDA-approved?

Not approved — research use only. Not approved by the FDA for any use; no FDA, PubMed, PubChem or ClinicalTrials.gov record under this name was located as of 2026-10-24 ^1,2,3,7.

References

PubMed search for 'pentadeca arginate', 'pentadecapeptide arginate', 'pentadeca-arginate', 'BPC-157 arginate' and 'BPC 157 arginine salt' (0 records, searched 2026-10-24) PubMed (NCBI E-utilities). 2026
PubChem name lookup for 'pentadeca arginate' and 'pentadecapeptide arginate' (no CID found, 2026-10-24) PubChem. 2026
ClinicalTrials.gov search for 'pentadeca arginate' (no studies returned, 2026-10-24) ClinicalTrials.gov. 2026
PubChem compound record for BPC-157 (CID 9941957) PubChem. 2026
Human evidence for BPC-157 in orthopaedic and regenerative medicine: a systematic review of efficacy and safety Acta Orthop Belg. 2026
BPC-157 as an Investigational Peptide Therapeutic: Biopharmaceutical Challenges, Formulation Strategies, and Translational Development Barriers Pharmaceutics. 2026
Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks (content current as of 04/22/2026) FDA. 2026
Tractatenblad 2026 Nr. 25: Anti-doping convention (ETS No. 135), amendment to the appendix - The 2026 Prohibited List, World Anti-Doping Code (English text; entry into force 1 January 2026) Tractatenblad van het Koninkrijk der Nederlanden (official government publication). 2026

Last reviewed October 24, 2026 by the Amiravo editorial team. Editorial policy · Report an error