Whether conventional medicine considers the condition curable or not is not the major factor in determining whether homeopathy can help. Homeopathy is also appropriate for those who have problems that bother them, even though no disease has been diagnosed. This says that a medicine which produces a set of symptoms in a healthy person will cure the same set of symptoms. Each homeopathic remedy has been carefully tested on large numbers of healthy people and we have discovered what symptoms produced in these people and thus we also know what symptoms it is capable of curing in you. We are not matching single symptoms but the whole pattern of symptoms, the gestalt.
Homeopathic remedies are all natural medicines.
Some are herbs, some minerals or other natural substances.