Indicated for Sore throat, Inflammation, Swelling, Warts. Mercurius corrosivus is a homeopathic remedy often used for sore throats as well as diarrhea. The throat is often inflamed and swollen with burning pain. This homeopathic remedy is made from mineral sources. Active ingredient: Mercurius corrosivus [HPUS]. Inactive ingredients: Sucrose/lactose pellets. All single remedies are made and packaged in glass.