Pentadeca Arginate (PDA) Reconstitution & Dosing
Also known as: PDA peptide
Quick answer: mix a 5 mg vial of Pentadeca Arginate (PDA) with 2 ml of bacteriostatic water. That gives 2.50 mg/ml, so a typical 250 mcg dose is 10 units on a U-100 insulin syringe — about 20 doses per vial. Reported protocols range 250 mcg–500 mcg, 1–2x daily.
Pentadeca Arginate is a stabilized arginate-salt analog of BPC-157 that has become the common substitute in US compounding since 2024. Reported dosing mirrors BPC-157 protocols. Full overview: what is Pentadeca Arginate (PDA)? →
Calculate your exact dose
Typical range: 250 mcg–500 mcg, 1–2x daily
Pentadeca Arginate (PDA) mixing chart — 5 mg vial
Units to draw for a 250 mcg dose at different water amounts. More water never changes the dose — only the volume you measure.
| Water added | Concentration | 250 mcg dose = | Per unit |
|---|---|---|---|
| 1 ml | 5.00 mg/ml | 5.0 units | 50.0 mcg |
| 2 ml ← typical | 2.50 mg/ml | 10 units | 25.0 mcg |
| 2.5 ml | 2.00 mg/ml | 13 units | 20.0 mcg |
| 3 ml | 1.67 mg/ml | 15 units | 16.7 mcg |
| 5 ml | 1.00 mg/ml | 25 units | 10.0 mcg |
Protocol reference
FAQ
How much bacteriostatic water do you add to Pentadeca Arginate (PDA)?+
Most protocols mix a 5 mg vial of Pentadeca Arginate (PDA) with 2 ml of bacteriostatic water. This gives 2.50 mg/ml, so a typical 250 mcg dose is 10 units on a U-100 insulin syringe. More or less water is fine — it only changes the volume you draw, not the dose.
What is a typical Pentadeca Arginate (PDA) dose?+
Commonly reported Pentadeca Arginate (PDA) protocols use 250 mcg to 500 mcg, 1–2x daily, administered via subcutaneous injection. These are reference figures from published protocols, not medical advice — individual use should be guided by a healthcare provider.
How many doses are in a 5 mg vial of Pentadeca Arginate (PDA)?+
At 250 mcg per dose, a 5 mg vial contains about 20 doses, regardless of how much water you add.
How should Pentadeca Arginate (PDA) be stored?+
Lyophilized: room temp or fridge. Reconstituted: refrigerate, typically used within 4–6 weeks.
Related peptides
Educational reference only. Values reflect commonly published research protocols and are not medical advice or a recommendation to use any compound. Pentadeca Arginate (PDA) may not be approved for human use in your jurisdiction.