Choline is used by our brains to make the important chemical acetylcholine, which is required for memory.
At a health food or vitamin store, buy choline chloride or choline hydrochloride­ not choline bitartrate. Taking choline may improve your memory and your ability to learn. You should also notice a keener sense of mental organization.

Dose: Take 500 mg of choline twice a day.
Here's a memory-improving drink-combine half a glass of carrot juice with half a glass of milk, and drink daily.
Three prunes a day supposedly improves memory. It can also help prevent constipation, and since constipation paralyzes the thinking process, take three prunes a day.
Daily doses of fresh ginger used in cooking and for tea may heighten memory.
Add four cloves to a cup of sage tea. Sage and cloves have been said to strengthen memory. Drink a cup every day.