HealthWise® L-Choline Bitartrate contains 99% pure pharmaceutical grade L-Choline amino acid powder. NO more than 1% silica added as an excipient. The primary role of choline bitartrate is lipolysis, which encourages the use of fat over glucose as the body's primary energy source. The bitartrate form of choline is easily absorbed. Endurance athletes may choose to use this form of choline to extend training. Every cell in the human body uses choline to build its outer membrane, which keeps it from being dissolved in the bloodstream. The bitartrate form of choline is easily absorbed by the body and used primarily as a fat metabolizer. Also many athletes choose to take choline to help delay fatigue. Did you know? Pre-menopausal women might need less choline from the diet than children or other adults because oestrogen induces the gene that catalyses the biosynthesis of choline. Interesting fact: Choline bitartrate provides about 7 times as much choline as the more commonly used phosphatidylcholine supplements and up to 10 times as much choline as lecithin, although as stated, not all crosses the BBB.