The super lysine plus liquid extract extract contains powerful herbal extracts of shitake mushroom, echinacea, goldenseal, licorice and propolis. It is an excellent companion product for the super lysine plus cold sore ointment. Many people use this strictly for immune support especially because it contains shitake mushroom extract. Free Of: Egg, Dairy, Mustard, Peanuts, Soy, Wheat Gluten, Tree Nuts.