Apoaequorin, the main ingredient in Prevagen, is an over-the-counter dietary supplement. Find out what's in it, what the possible side effects are, and more. Skip to main content ...

Key Features. Apoaequorin, the main ingredient in Prevagen, is a calcium-binding protein originally found in jellyfish, but the supplement features a lab-manufactured synthetic version of this ...

In nature, apoaequorin produces a blue light when exposed to calcium. Apoaequorin is thought to help improve memory and slow progressive loss of cognitive function, but little evidence supports this.