A homeopathic remedy is normally a single substance usually derived from a plant, an animal, or a mineral which is then subjected to a special procedure which brings out the medicinal properties of the original substance. There are currently about 2000 substances whose specific effects on the body have been recorded. Examples are charcoal, salt, poison ivy, snake poisons, etc. Homeopaths have discovered by experience that the effect of homeopathic medicines is strengthened dramatically upon successive dilutions and vigorous shaking between each dilution. It is this use of high dilutions that has given rise to controversy.
Many conventional doctors claim that homeopathy functions only as a placebo.
However, several controlled clinical studies have been performed by medical researchers, showing that homeopathy is an effective method of treatment for many diseases. The best summary of research can be found in a study published in the British Medical Journal. Tablets and globuli are made of impregnated milk sugar, whereas liquid preparations are solutions of the medication in water with some amount of alcohol added as a preservative. The key to finding the right homeopathic remedy is individualisation. The mere name of a disease, like flu, cold, arthritis, fibromyalgia, etc. is not enough.