Some established brands that sell lecithin include Now Foods, Sundown Naturals and Nature's Bounty, according to user ratings on Amazon.com. As of July 2015, these three brands rate four out of five stars for their bottled 1200-milligram lecithin supplements.
Lecithin is a naturally occurring series of compounds called phosphatidylcholines. They are found in the cells of animals and vegetables and are required for appropriate biological function. Commercial lecithin is usually sold for neurological issues, cholesterol control or atherosclerosis. Because lecithin is a good source of choline, it is widely regarded as starting acetylcholine synthesis within the brain, which is primarily responsible for memory and memory function. Lecithin has many other useful applications, including human and animal food, paints and industrial applications.