Potassium Sulphate Homeopathic Tissue Remedy For Temporary Symtomatic Relief of cough, earache, sinus congestion. No 7 Kali Sulph Kali Sulph is indicated anytime there is a sticky, yellowish discharge from the skin or mucous membranes. Symptoms are generally worse in the evening and better in fresh air. Cough: With yellow expectoration that are worse in a heated room and in the evening. Earaches: (After diagnosis by a physician) Deep-seated pain in ears, stinging, and itching. Sinus: Stick yellow or greenish discharge from the sinuses is an indication that may be relieved by the remedy Kali Sulph.