HOMEOPATHIC MEDICINE is controversial as it uses highly diluted biological, botanical, or mineral substances to stimulate the body's own defence to deal with the symptoms and causes and recover. It is the safest natural stimulation of the defence systems of the body and has no contraindications, adverse drug reactions or the risk of drug interactions.
Hering, Boericke, Mezger and Leeser indicate that original substance is the lava and ash from the Icelandic volcano Mt. Hekla.