Contrary to popular belief, lemon is not a hazard for an inflamed larynx. Lemon is known to help reverse voice loss. If you are suffering from a sudden loss of voice; all that you would need to do is to mix a few drops of lemon juice and honey in a glass of lukewarm water. Alternatively, one could even dissolve a few drops of lemon juice in a glass of warm water and add a pinch of salt.