For its effects on the respiratory tract and mucous membranes. it is primarily indicated in cases of hoarseness, sore throat, burning in the mouth and throat, and nasal congestion with a constant desire to pick at the nose. it is also useful in managing symptoms of irritation and inflammation of the throat and vocal cords, especially in speakers or singers. due to its toxicity in crude form, it is used only in highly diluted homeopathic preparations.