Dr. Stella Immanuel, MD ingestible mouth spray for oral immune support. Proprietary Blend: 500 mg† Vegetable Glycerin, Quercetin, N-Acetyl-L-Cystine, Neem (Azadirachta indica) Leaf Powder, Licorice (Glycyrrhiza uralensis) Root Extract, Elderberry (Sambucus nigra) Fruit Extract, Blackseed (Nigella sativa) Oil