The recommended dosage for lecithin varies between 1 to 35 grams daily, according to Drugs.com. Patients take lecithin to treat hypercholesterolemia, liver ailments and neurological disorders. Its other use is to activate defense systems through immune system modification.
There are no adverse effects associated with lecithin, according to Drugs.com. However, some patients taking a daily dosage of 25 grams have complained of anorexia and nausea. Some Alzheimer's patients taking tacrine and lecithin have experienced hepatitis and gastrointestinal side effects. There is not enough information to give proper advice to pregnant and breast-feeding women. Interaction with other medicines is not well documented.