Here’s how and why I use alpha-GPC and ginkgo biloba supplements during periods where I need increased focused concentration. Tune in for the details!

For a collection of my dopamine and choline resources, see https://chrismasterjohnphd.com/methylation where they are collected together with my methylation resources.

Here is a science paper documenting the different plants that contain acetylcholinesterase inhibitors: https://www.ncbi.nlm.nih.gov/pubmed/17346955