Note, a much better source of choline is Lecithin. Why not take more than 3 grams choline? The average pill of choline bitartrate contains no more than 250mg.
(And I'm talking about the Lecithan granules or powder, not the gelcaps.)
Check this out: 1 serving has 3250mg choline, 350mg Inositol and tons of fatty acids. This is BRAIN FOOD. It also has phosphatidyl serine or something like that which clears up skin. 
B-5 or pantothetic acid is used in the
process of converting phosphatytal choline into acetylcholine. Don't forget vitamin C, which is used to convert phenylalanine into Dopamine.
Inositol is usually included with most choline supplaments:
From www.biopsychiatry.com "Inositol and its derivatives serve as messenger molecules within the nervous system. This is a second-messenger system used by several noradrenergic, serotonergic and cholinergic receptors."
Could help with the body intelligence we were talking about in the 'Feeling' posts.
choline, inositol, b5, vitamin C... and whole host of others. I read Your Miracle Brain by Jean Carper last year and she cited study after study that showed how intelligence tests rose after taking this or that nutrient.
I ordered and took most of them for a couple months--13 pills a day. (yack!) I noticed perhaps a 15% difference. When I went off them it became very apparent how stupid I normally am!
Nothing quite like fluency of thought! I can get the same effect though, with just two tablespoons of Lecithin.