Indicated for Boils, Bruises, Cough, Dry, itching skin . Calcarea sulphurica is a homeopathic remedy commonly used for boils, bruises, cough and dry, itching skin. Other indications for its use include mucous discharges that are yellow, thick and lumpy as well as burning and itching on the soles of the feet. In many ways, it acts a bit like Hepar sulphur. Active ingredient: Calcarea sulphurica [HPUS]. Inactive ingredients: Sucrose/lactose pellets.