According to WebMD, the correct daily dosage of lecithin varies from person to person. Factors which could affect dosage include age and health. Because there is limited scientific research available, WebMD recommends that a physician be consulted before consuming lecithin.
According to WebMD, lecithin is an essential fat which is converted into the neurotransmitter known as acetylcholine. Lecithin has been used to treat memory disorders, gallbladder disease, liver disease, manic depressive disorder, high cholesterol, anxiety and eczema.
Drugs.com indicates that lecithin can be found in many foods including beef liver, eggs, peanuts, cauliflower and oranges. Foods that contain lecithin are also good sources of choline.