Alpha-GPC

Alpha-GPC is a natural choline compound found in the brain. Alpha-GPC rapidly delivers choline to the brain across the blood-brain barrier and is a biosynthetic precursor of acetylcholine. Supplementing A-GPC can potentially slow the rate of cognitive decline as we age

Also known as aGPC, A-GPC, Alpha-Glyceryl Phosphoryl Choline

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Wikipedia

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https://www.lifeextension.com/magazine/2011/1/feed-your-brain/page-01

https://examine.com/faq/what-source-of-choline-should-i-use/