Centrophenoxine Review: What the Evidence Says

Centrophenoxine has been around longer than most of the people buying it. You’ll also see it sold as meclofenoxate.

My verdict is simple. The human evidence is small and old, and the supplement market is the bigger problem.

Key Takeaways

The human trials are small and old. One 1989 double-blind trial of 50 older adults with dementia found memory improvements in 48 percent of the treated group versus 28 percent on placebo
The FDA has not approved it for any indication. It is prescribed in China and elsewhere, but US supplements that contain it are selling an unapproved drug
Labels can’t be trusted. In a 2022 test of seven US supplements, only one listed the centrophenoxine amount within 10 percent of the real amount
Nothing I opened tests it in healthy students or professionals. Treat the focus and anti-aging claims as marketing until trials say otherwise
Talk to your doctor first. That goes double if you take any medicine, are pregnant or nursing, or are under 18

What Is Centrophenoxine?

Centrophenoxine is a drug, not a plant extract. A 2022 paper in Clinical Toxicology describes it as prescribed in China and elsewhere for conditions including alcoholism and dementia.

The same authors note the US Food and Drug Administration has not approved it for any indication. That detail changes how you should read every supplement label.

What Does the Research Actually Show?

The best human evidence I opened is a double-blind trial from 1989. It enrolled 50 people over 60 with medium-level dementia, with an average age of 77, who took 2 g a day of centrophenoxine or placebo for eight weeks.

About 48 percent of the treated group improved on memory functions, against 28 percent of the placebo group. The authors judged it useful and harmless, but the study was small, short, scored in a semi-quantitative way, and run in people with dementia.

Marketing pages often leap from that result to better memory, learning and anti-aging for healthy adults. None of the studies I opened tests it in healthy students or early-career professionals.

So here’s the profile. If anyone is a candidate for a drug like this, it’s an older adult under a doctor’s care, not a 25-year-old looking for an edge.

Can You Trust the Supplement Version?

This is the part that surprised me. The Clinical Toxicology team bought seven dietary supplements that listed centrophenoxine and analyzed each one.

Seven circles show only 1 of 7 centrophenoxine supplements listed an amount within 10 percent of the real amount. — Source: Cohen, Avula and Khan, Clinical Toxicology, 2022.

All seven contained it, at 79 to 251 mg per serving. Following the label’s maximum daily intake would mean 237 to 752 mg a day.

Only one of the seven listed an amount within 10 percent of what was actually inside. The authors warn that cognitive-enhancement supplements may contain unapproved drugs.

That doesn’t tell you about any one brand, and I’m not naming one. It does tell you that a bottle’s number deserves skepticism.

What About Side Effects?

Users commonly report headache, nausea, dizziness, stomach upset, jaw clenching and irritability. I couldn’t open a modern safety trial, so treat that list as reports and not as a complete picture.

If you take prescription medicine, talk to your doctor or pharmacist before you start anything new. If you feel unwell on it, stop and call a clinician.

Does the Piracetam Stack Hold Up?

The community pairs centrophenoxine with racetams like piracetam, usually alongside a choline source, to ward off headaches. I didn’t find trial evidence for that combination in the sources I opened.

Treat it as community practice, not evidence. If you’re reading up on choline, our guides on alpha-GPC and the best choline supplement are a better place to start, and our piracetam benefits guide covers the racetam side.