Shop › Marshmallow Root - per ounce Marshmallow Root - per ounce $10.00 Known as the “Ultimate Gut and Lung Protector”. make it as a Cold Brew for best results! Add To Cart Added! Known as the “Ultimate Gut and Lung Protector”. make it as a Cold Brew for best results! You Might Also Like Burdock Root $5.00 Dandelion Root $5.00