How to reconstitute ARA-290: mixing and storage

Experimental peptide studied for small-fiber nerve damage, with uncertain pain relief and safety.

Also called: Cibinetide, ARA 290, ARA290, pHBSP, pHSBP, Pyroglutamate helix B surface peptide.

Healing and repair peptides · EPO-derived peptide designed to activate the innate repair receptor.

Comes as: Community powder vials labelled 10 mg or 16 mg; identity, amount and sterility unverified.

Mixed with: Community users report bacteriostatic water. Trial-buffered formulations used different instructions, recorded with the eye-study protocol..

Common vial sizes: 10, 16 mg. Common water amounts: 1, 1.5, 3 mL.

  • Reported mixes include 10 mg/1 mL, 16 mg/1 mL and 16 mg/1.5 mL. These are community reports, not validated preparations.
  • A 16 mg/3 mL report described persistent undissolved material. Do not use material with visible clumps or discoloration.
  • No verified method was found to rescue a gelled vial. Adding acid changes the formulation and has not been validated here.
  • U-100 syringe units measure volume: 100 units equals 1 mL. The milligram amount depends on the actual concentration.
  • Specific trial handling appears under the 12-week eye protocol; it cannot establish storage or mixing rules for plain powder.

Before mixing: No validated storage conditions or shelf life were found for unregulated powder vials.

After mixing: No validated shelf life after community mixing was found. Refrigeration cannot establish potency or sterility.

Related to ARA-290

Sources

Sources checked: 2026-10-18.

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