Apoaequorin

Protein

What is it

Apoaequorin is a calcium-binding protein originally isolated from the jellyfish Aequorea victoria. It is the active ingredient in Prevagen, marketed as a memory and cognitive support supplement.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Age-related memory (marketed claim)

Mixed Evidence

The main clinical trial (Madison Memory Study) did not meet its primary endpoint. Post-hoc subgroup analyses are not reliable evidence of benefit. FTC has challenged marketing claims.

How it works

Apoaequorin binds calcium and was originally used in research as a bioluminescent indicator. Marketing claims propose that orally ingested apoaequorin may help regulate intraneuronal calcium and support memory function in age-related cognitive decline. A critical problem: apoaequorin is a protein, and proteins are broken down to amino acids during digestion. There is no established mechanism by which an intact protein delivered orally could reach the brain. FDA, FTC, and independent researchers have challenged the science behind marketing claims. The FTC and New York Attorney General sued the manufacturer in 2017 alleging deceptive marketing; the case was settled with the manufacturer required to change certain claims. The pivotal Madison Memory Study did not show statistically significant benefit on its primary endpoints; positive findings came from post-hoc subgroup analyses.

Dosage

Marketed dose: 10 to 20 mg per day. No clinical evidence supports a meaningful dose-response. Higher doses do not have established benefit.

When and how to take it

Marketed for daily morning use. Effects, per manufacturer, are claimed to develop over 90 days. Independent evidence for any timing-related effect is lacking.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Apoaequorin (Prevagen)

The branded product; primary marketed form.

Oral protein largely digested; systemic exposure presumed minimal.

Safety

At marketed doses, the product has not been associated with serious adverse effects in commercial use. The Memory Hotline reports occasional minor complaints. As an oral protein, systemic exposure is presumed minimal.

Who should be cautious

People seeking treatment for memory complaints should consult a clinician rather than relying on apoaequorin. Pregnancy and breastfeeding: no specific data; minimal protein supplement is unlikely to cause harm but lacks established benefit.

Interactions

No significant drug interactions reported.

Frequently asked questions

Does Prevagen actually improve memory?⌄

The published clinical evidence does not robustly support memory benefits. The pivotal trial did not meet its primary endpoints, and the FTC has alleged deceptive marketing.

Is apoaequorin safe?⌄

No serious safety signals have been identified, but lack of harm is not evidence of benefit. Discuss memory concerns with a clinician for evidence-based evaluation.

References

Apoaequorin on Wikidata — Wikidata link

Apoaequorin on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Apoaequorin (PubMed search) — PubMed link

Track Apoaequorin with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.