Hi1 Citicholine or CDP choline or cytidine-5-diphosphocholine is a precursor of phoshatidylcholine. Just punch in "citicholine" in the internet and you will find an abundance of info. Raj [log in to unmask] ********** ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn