This page compares what is documented about ARA-290 and BPC 157, rather than ranking them by effect. What each molecule is, the sizes and prices actually carried, what the certificate covers, and how the two differ on the bench. Everything here is research-use-only material and we do not publish outcome, dosing or administration content for any compound in the catalogue.
What is ARA-290 and what is BPC 157?
ARA-290. ARA-290 is an 11-amino-acid peptide derived from a structural region of erythropoietin, designed to separate one activity from the parent protein.
BPC 157. BPC 157, a stable gastric pentadecapeptide, appears across preclinical tissue-repair models — tendon, ligament, gut epithelium — making it one of the most-requested research compounds we stock.
How do ARA-290 and BPC 157 compare on price and size?
| ARA-290 | BPC 157 | |
|---|---|---|
| Sizes carried | 10 mg | 5 mg, 10 mg |
| From | $70.00 | $55.00 |
| Best price per unit | $7.00 / mg | $6.00 / mg |
| Availability | Backordered — waitlist | Backordered — waitlist |
| Certificate | Lot certificate on the product page | Lot certificate on the product page |
| Molecular formula | C51H84N16O21 | C62H98N16O22 |
| Molar mass | 1,257.3 g/mol | 1,419.5 g/mol |
| Source | PubChem CID 91810664 | PubChem CID 9941957 |
| Research area | tissue protection research | tissue-repair model research |
At their best sizes BPC 157 works out at $6.00 per mg against $7.00 for ARA-290 — 17% more for the mg. Vial prices start at $70.00 and $55.00 respectively, which is the number most people compare and the one that says least, because the two are not sold in the same sizes. Full sizes, tier pricing and the lot certificate sit on the ARA-290 page and the BPC 157 page.
What is each one studied for?
What the published literature investigates, which is a different question from what either will do, and the only one of the two a supplier can answer.
ARA-290 is studied in tissue protection research. Deriving short functional peptides from large proteins is a well-established strategy with a substantial literature.
BPC 157 is studied in tissue-repair model research. Preclinical tissue-repair modelling continues to feature BPC 157 heavily, with new cellular and animal-model work appearing steadily.
Studied in the same area does not make two compounds interchangeable, and the research library holds the per-compound documentation.
BPC 157 vs ARA 290: how they differ on the bench
BPC 157. BPC 157 is unusually stable for a peptide, but stability in acid is not stability in solution on a bench — the storage guide covers the difference.
ARA-290. Short peptides derived from large proteins are easy to confirm by mass and easy to confuse by name, so the sequence on the certificate is the thing to read.
On naming, because the two are written several ways and the difference is not always obvious: ARA-290 is also written ara 290. They refer to the same materials described here, and the certificate for a lot uses the name on this page. The comparison itself is usually typed ARA 290 vs BPC 157.
What actually differs between BPC 157 and ARA-290
Worth doing the arithmetic before comparing sizes: BPC 157 is 1,419.5 g/mol and ARA-290 is 1,257.3 g/mol, a factor of 1.1. A milligram of ARA-290 therefore contains roughly 1.1 times as many molecules as a milligram of BPC 157, so two vials of the same labelled mass hold quite different amounts of substance. Equal milligrams are not equal moles, which is what the molarity calculator exists to convert, and it is the reason a price-per-milligram comparison and a price-per-mole comparison can point at different vials.
Identity is the other analytical axis, and it is settled per lot rather than per compound. BPC 157. Catalogued as BPC-157, and the certificate's identity test resolves to that.
Both are released against a certificate reporting identity, purity by the stated method and net peptide content, readable before anything is bought.
Which is better, BPC 157 or ARA 290?
Neither BPC 157 nor ARA 290 is ranked against the other here, and the refusal is deliberate. Better, safer and stronger are questions about effects in a living system, and we sell neither compound for use in one — why none of these pages ranks two compounds sets out the reasoning in full.
What it does instead, for these two:
- BPC 157 is the cheaper of the two per mg, at $6.00 against $7.00.
- BPC 157 is the heavier molecule by a factor of 1.1, so equal milligrams are not equal moles.
- ARA-290 is carried in 1 size and BPC 157 in 2, and each lot carries its own certificate.
Every one of those is checkable before you buy.
Common questions
What is the difference between BPC 157 and ARA-290?
Different molecules before anything else: BPC 157 is C62H98N16O22 and ARA-290 is C51H84N16O21. BPC 157, a stable gastric pentadecapeptide, appears across preclinical tissue-repair models — tendon, ligament, gut epithelium — making it one of the most-requested research compounds we stock. ARA-290 is an 11-amino-acid peptide derived from a structural region of erythropoietin, designed to separate one activity from the parent protein.
Which one should I choose?
ARA-290 is carried in 10 mg and BPC 157 in 5 mg, 10 mg, each lot with its own certificate. Which of those suits the work is yours to decide; everything here is research-use-only rather than guidance for use in a human or an animal.
Do both ARA-290 and BPC 157 come with a certificate of analysis?
Neither is in stock at the moment, so in each case the certificate is the one attached to the lot that arrives. A certificate belongs to a lot, not to a product. It is linked from the product page, and reports identity, purity by the stated method, and net peptide content for the material actually in that lot.
Which is cheaper, BPC 157 or ARA-290?
Per mg, BPC 157 at $6.00 against $7.00, taking each one's best size. By vial they start at $70.00 for ARA-290 and $55.00 for BPC 157, which is the comparison most people make and the one that says least, because the two are not sold in the same sizes.
Is a milligram of ARA-290 the same as a milligram of BPC 157?
By mass yes, by amount of substance no. BPC 157 is 1,419.5 g/mol and ARA-290 is 1,257.3 g/mol, a factor of 1.1, so a milligram of ARA-290 holds roughly 1.1 times as many molecules. Two vials with the same number on the label are not the same amount of substance, which is what the molarity calculator converts.
FOR LABORATORY AND IN-VITRO RESEARCH USE ONLY. NOT FOR HUMAN OR ANIMAL CONSUMPTION. NOT FOR PERSONAL, MEDICAL, DIAGNOSTIC, THERAPEUTIC, OR RECREATIONAL USE.