Side-by-Side Comparison · 2026

BPC-157 Arginate vs OTR-AC

BPC-157 Arginate vs OTR-AC — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

BPC-157 Arginate
Healing & Recovery

BPC-157 Arginate is the arginine salt form of BPC-157, identical in the GEPPPGKPADDAGLV peptide sequence but with improved water solubility, aqueous stability, and oral bioavailability. The arginate counterion buffers GI microenvironmental pH, reducing acid-catalyzed peptide degr...

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OTR-AC
Healing & Recovery

OTR-AC is the common name for oral high-dose BPC-157 acetate. The peptide sequence (GEPPPGKPADDAGLV) is identical to injectable BPC-157 but is dosed at 2–5 mg orally rather than 250–500 µg subcutaneously to compensate for GI degradation and first-pass metabolism. The oral route p...

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Key Parameters
Parameter BPC-157 Arginate OTR-AC
Category Healing & Recovery Healing & Recovery
Research Extensively Studied Preclinical
Half-Life 4–6 hours 4–6 hours (estimated, oral)
Typical Dose 250–500 µg 2–5 mg
Frequency Once or twice daily Once daily
Route Oral / Subcutaneous Oral
FDA Status Not Approved Not Approved

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Frequently Asked Questions
What is the difference between BPC-157 Arginate and OTR-AC?
BPC-157 Arginate: BPC-157 Arginate is the arginine salt form of BPC-157, identical in the GEPPPGKPADDAGLV peptide sequence but with improved water solubility, aqueous stability, and oral bioavailability. The arginate c... OTR-AC: OTR-AC is the common name for oral high-dose BPC-157 acetate. The peptide sequence (GEPPPGKPADDAGLV) is identical to injectable BPC-157 but is dosed at 2–5 mg orally rather than 250–500 µg subcutaneou...
Which has a longer half-life, BPC-157 Arginate or OTR-AC?
BPC-157 Arginate half-life: 4–6 hours. OTR-AC half-life: 4–6 hours (estimated, oral).
Can you stack BPC-157 Arginate and OTR-AC?
BPC-157 Arginate and OTR-AC are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.