Soy Lecithin
Soy lecithin is only used in USANA tablets as a minor constituent (about 0.0007 – 0.001 g/tablet) of certain tablet coatings. Additionally, no soy protein or typically allergenic soy compounds are present in soy lecithin.
Studies have concluded that soy lecithin is rarely an issue for those with soy allergies. That fact, combined with the miniscule dosage in the products, should not generally prevent someone with soy allergies from using the products.