ARA-290

ARA-290 (Cibinetide) is a synthetic 11-amino acid peptide derived from the helix B region of erythropoietin (EPO). It captures the tissue-protective and anti-inflammatory effects of EPO while completely avoiding the stimulation of red blood cell production — making it a targeted tissue repair compound. Supplied as lyophilized powder with ≥98% purity (HPLC-verified).

How It Works

ARA-290 binds to the innate repair receptor (IRR) — a receptor complex distinct from the EPO receptor that stimulates red blood cells. This means ARA-290 triggers tissue protection, reduces inflammation, and promotes repair without affecting blood cell counts, hemoglobin, or coagulation. It’s the repair signal isolated from the blood-building signal.

Research Data

• Neuropathic pain: Clinical trials show ARA-290 reduces neuropathic pain in conditions like sarcoidosis and small fiber neuropathy. Subjects reported meaningful pain reduction within 4 weeks.
• Nerve repair: Promotes nerve fiber regeneration and reduces nerve inflammation. Research shows improved nerve conduction and reduced pain signaling in peripheral neuropathy models.
• Tissue protection: Protects cells from damage during ischemia (lack of blood flow) and inflammation. Research demonstrates reduced tissue death in heart attack, stroke, and kidney injury models.
• Wound healing: Accelerates diabetic wound healing in animal models by reducing inflammation and promoting angiogenesis at wound sites.
• Anti-inflammatory: Suppresses multiple inflammatory pathways including NF-κB, TNF-α, and IL-6 — key drivers of tissue damage across many disease states.
• Retinal protection: Emerging research investigates ARA-290 for protecting retinal nerve cells in glaucoma and diabetic retinopathy models — neuroprotection without blood cell effects.
• No blood effects: Critical advantage over EPO — ARA-290 does not increase hematocrit, hemoglobin, or blood viscosity, eliminating the thrombosis risk associated with EPO.

Research Applications

• Neuroprotection and nerve regeneration
• Neuropathic pain and small fiber neuropathy
• Ischemia-reperfusion and tissue protection
• Innate repair receptor pharmacology

Product Specifications

• Purity: ≥98% (HPLC)
• Form: Lyophilized powder
• Molecular Weight: ~1,257 Da
• Solubility: Reconstitute in sterile bacteriostatic water

Storage & Handling

• Store lyophilized peptide at -20°C, protected from light and moisture.
• After reconstitution, aliquot and store at -20°C. Avoid repeated freeze-thaw cycles.

Disclaimer: This product is intended exclusively for laboratory and research purposes. It is not a drug, dietary supplement, or food product. Not for human or veterinary use.

What the Internet Says

This is what online communities discuss about this compound. Not medical advice, not a recommendation — just what people are saying. For laboratory research use only.

Community Buzz

ARA-290 is “EPO without the blood thickening.” It’s derived from erythropoietin (the red blood cell booster), but engineered to activate only the tissue-protective receptor (IRR — innate repair receptor) without touching the blood-cell-producing pathway. The community’s description: “the peptide nobody talks about but everyone should know.” Its primary reputation is for nerve pain relief — people with peripheral neuropathy, small fiber neuropathy, chemotherapy-induced nerve damage, and even complex regional pain syndrome (CRPS) report significant symptom reduction. The mechanism appears to involve raising the threshold of TRPV1 pain channels and reducing neuroinflammation. It also acts as a whole-body anti-inflammatory — modulating macrophages and reducing pro-inflammatory cytokines without suppressing the immune system. Clinical research showed it actually improved corneal nerve fiber density in patients with nerve damage — a rare finding that suggests actual regeneration, not just symptom masking. The downside: it’s expensive (~$80-100 per 16mg vial) and requires 4mg daily dosing, making it one of the pricier peptide protocols.

Why People Are Interested

• Nerve pain that nothing else touches finally responds. Neuropathy patients who’ve tried everything report genuine relief — tingling, burning, and numbness reduce significantly.
• Whole-body inflammation quiets down. Works by modulating the innate immune response — blocks pro-inflammatory cytokines (IL-6, TNF-α) and activates cell survival pathways. Not an immune suppressant.
• Tissue repair accelerates. Promotes wound healing by activating the PI3K-Akt and JAK2-STAT5 protective pathways — cells survive and repair instead of dying under stress.
• May actually regenerate nerves, not just mask pain. The corneal nerve fiber density study showed new nerve growth — rare evidence of actual regeneration, not just symptom relief.

Popular Combinations

• ARA-290 + BPC-157 + TB-500: Full recovery stack — ARA-290 for nerve repair and inflammation control, BPC/TB for tissue healing and systemic recovery.
• ARA-290 + GHK-Cu: Tissue regeneration — copper peptide for collagen remodeling, ARA-290 for nerve and tissue protective signaling.

⚠️ Sourced from public forums (Reddit r/Peptides, r/Biohackers, r/Neuropathy), clinical research, and peptide communities. ARA-290 is expensive ($80-100+ per 16mg vial) — multi-week protocols are costly. The “does it actually regenerate nerves or just reduce inflammation masking pain?” debate is the central scientific controversy. Half-life is short (hours), prompting debate about once vs twice daily dosing. The peptide has a small but very dedicated following — less discussed than BPC-157/TB-500 but highly respected. Community protocols are experimental. This information is for awareness only.