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RUO · Phase 2EPO-Derived✓ Free to read

ARA-290 (Cibinetide)

Also called Cibinetide

EPO with the blood-thickening danger cut out, aimed at one specific kind of doctor-confirmed nerve pain.

Updated 03 May 2026Read 3 minBacked by 58 studies

The quick version

What it is: A small piece of the hormone EPO, changed to be safer
Is it FDA-approved?: No. It is in phase 2 testing
How strong is the proof?: Some. Small phase 2 trials look promising
How you take it: A small shot under the skin, about 4 mg a day
Typical result: Less nerve pain in the studied patients
Biggest catch: Only works for one specific nerve diagnosis

Any word with a dotted underline is a science word — tap it for a plain-English meaning.

In plain words.

ARA-290 is also called Cibinetide. It is a short built from a piece of EPO. EPO is a hormone that tells your body to make red blood cells.

But ARA-290 was changed on purpose. It keeps the healing, calming part of EPO. It drops the red-blood-cell part. Full EPO is dangerous because it thickens the blood. This one is built to skip that.

It works on a switch called the "innate repair receptor." That switch helps calm inflammation and protect nerves. It is sold "for research only."

What people use it for.

People use it for nerve pain, mostly a type called small fiber neuropathy. That is when the tiny nerves in the skin get damaged and hurt.

The studied patients had it from sarcoidosis (an inflammation disease) or from diabetes. Some long-COVID patients try it too.

It is not a general "I feel inflamed" fix. It is for a specific, confirmed nerve problem.

Does it actually work?

For the right patient, the early signs are real but small.

A in 22 sarcoidosis patients with nerve damage showed less pain and better nerve function. A phase 2 trial in 48 people with diabetic nerve pain showed lower pain scores.

But there is no phase 3 trial yet, so it is not proven. And the studied patients all had nerve damage confirmed by a skin biopsy. A doctor counted the nerve fibers in their skin. If you do not have that diagnosis, the results may not apply to you.

what you’ve probably heard.

The claims floating around online, and how true they actually are.

“It's a powerful anti-inflammatory for whatever's inflamed.”

not quite

The trial signal was in one specific thing: doctor-confirmed small fiber neuropathy. It does not stretch to a general 'I feel inflamed,' which is the most common reason people reach for it.

“It cures nerve pain.”

overblown

Two small phase 2 trials showed less pain in sarcoidosis and diabetic nerve damage. There is no phase 3 yet, and the patients all had nerve loss confirmed by a skin biopsy.

“It's made from EPO, so it'll boost your endurance.”

myth

Backwards. Real ARA-290 was built to drop the red-blood-cell part of EPO on purpose. If your blood count jumps after a dose, you bought fake EPO, not this.

“It helps long COVID.”

unproven

Some long-COVID patients try it, but there is no trial behind that use. The studied patients had a specific biopsy-confirmed nerve diagnosis instead.

How you take it.

People use it as a small shot under the skin. The dose in the trials was about 4 mg a day.

The trials ran short courses, about 28 days. This is not a you take forever.

A smart approach copies the trial: track your pain on a 0-to-10 scale each visit. Stop at 28 days no matter what.

What to watch out for.

The trials did not flag big, repeating side effects, and real ARA-290 is built to be gentler than EPO. The thing to actually watch for is a fake.

Real ARA-290 does NOT raise your red blood cell count. So if your blood work shows a jump in hemoglobin or hematocrit after a dose, the vial is probably fake EPO, not ARA-290. That is a different and riskier drug. Stop and get retested.
Do not mix it with EPO or similar drugs. They push the opposite direction on blood safety.
Skip it if you have active cancer or are pregnant. The long-term safety is unknown.

If you do not have a confirmed small fiber neuropathy diagnosis, this is probably not your . Talk to a real doctor. We are not your doctor.

Where people get it.

Here are the ways people get it, from safest to riskiest.

Brand. There is none. The supply only exists inside trials.
. Rare, since it is still investigational, about $200 to $400 a month where you can find it.
Research-only (). The main path, about $120 to $250 a month. Sold "for research only." Identity and purity are not guaranteed.
. Cheapest, about $85 to $95 a month, but illegal to import for human use.

The key check: real ARA-290 leaves your blood counts flat. A jump means a fake. That is the clearest red flag here.

Our honest take.

Exactly one person should run this: someone with doctor-confirmed small fiber neuropathy and bad pain that other drugs did not fix, with a doctor willing to help.

For that person, a planned 28-day course is one of the more reasonable experiments on this site. Track pain at every visit, and when day 28 lands, you are done no matter what the score says.

If you are just shopping for a general anti-inflammatory, this is the wrong vial. The trial signal does not stretch to "I feel inflamed." It was built for a specific nerve diagnosis.

The studies behind this.

We read the research so you don't have to. Here's where the facts on this page come from.

Learn about these too.

EPO (Erythropoietin)

Parent compound · FDA · ⚠ WADA

Semax

Cognition · RUO

Cerebrolysin

Cognition · approved abroad

We're not your doctor, and this isn't medical advice. It's a plain-English summary of what the research says, so you can have a smarter conversation with someone who is.

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