Choline is a molecule mostly used for either its cognitive boosting properties (turning into acetylcholine, the learning neurotransmitter) or as a liver health agent, able to reduce liver fat. It's found in high amounts in eggs; the yolks in particular.
Choline is most often used for
Doses for choline vary significantly.
Typically a dose of 250mg to 500mg is used for general health purposes once daily.
For mechanisms through acetylcholine, the choline should be pulsed in high doses acutely as higher doses are partitioned to the brain to a greater extent. 1-2g is typically used.
Doses should be titrated to suit the individual, as too high of a dose at any given time may give the user a headache. It is suggested that doses start out at 50-100mg daily and that users adjust upwards in accordance with their tolerance.