Sublingual L Glutathione is specially formulated as an under the tongue ( sublingual) spray.This process enables glutathione to be absorbed through mucous membranes which quickly delivers a high dosage of glutathione directly to the Curious if Glutathione support is right for you? Let's talk about what your body actually needs. Sublingual Glutathione Spray AIMazing Grace Glutathione Nasal Spray Antioxidant & Cellular Support Reprogramming of glutamine metabolism and its impact on immune response in the tumor microenvironment Cell Communication and Signaling Springer Nature Link