Remedy is a technical term in homeopathy that refers to a substance prepared with a particular procedure and intended for treating patients.
Homeopathic practitioners rely on two types of reference when prescribing remedies: Materia medica and repertories. A homeopathic Materia medica is a collection of “drug pictures”, organised alphabetically by remedy, that describes the symptom patterns associated with individual remedies.
A homeopathic repertory is an index of disease symptoms that lists remedies associated with specific symptoms.Homeopathy uses many animal, plant, mineral, and synthetic substances in its remedies. Examples include Arsenicum album (arsenic oxide), Natrum muriaticum (sodium chloride or table salt), Lachesis muta (the venom of the bushmaster snake), Opium, and Thyroidinum (thyroid hormone). Homeopaths also use treatments called nosodes (from the Greek nosos, disease) made from diseased or pathological products such as fecal, urinary, and respiratory discharges, blood, and tissue. Homeopathic remedies prepared from healthy specimens are called sarcodes.
Some modern homeopaths have considered more esoteric bases for remedies, known as imponderables because they do not originate from a material but from electromagnetic energy presumed to have been “captured” by alcohol or lactose. Examples include X-rays and sunlight. Recent ventures by homeopaths into even more esoteric substances include thunderstorms (prepared from collected rainwater). Today there are about 3,000 different remedies commonly used in homeopathy.
Some homeopaths also use techniques that are regarded by other practitioners as controversial. These include paper remedies, where the substance and dilution are written on a piece of paper and either pinned to the patient’s clothing, put in their pocket, or placed under a glass of water that is then given to the patient, as well as the use of radionics to prepare remedies.
In producing remedies for diseases, homeopaths use a process called dynamisation or potentisation whereby a substance is diluted with alcohol or distilled water and then vigorously shaken by ten hard strikes against an elastic body in a process called succussion.
While Hahnemann advocated using substances which produce symptoms similar to those of the disease being treated, he found that material doses would intensify the symptoms and exacerbate the condition, sometimes causing what amounted to dangerous toxic reactions. He therefore specified that the substances be diluted. Hahnemann believed that the process of succussion activated the vital energy of the diluted substance. For this purpose, Hahnemann had a saddle maker construct a special wooden striking board covered in leather on one side and stuffed with horsehair. Insoluble solids, such as quartz and oyster shell, are diluted by grinding them with lactose (trituration).
Three logarithmic potency scales are in regular use in homeopathy. Hahnemann created the centesimal or C scale, diluting a substance by a factor of 100 at each stage. The centesimal scale was favored by Hahnemann for most of his life. A 2C dilution requires a substance to be diluted to one part in one hundred, and then some of that diluted solution diluted by a further factor of one hundred.
This works out to one part of the original substance in 10,000 parts of the solution.
A 6C dilution repeats this process six times, ending up with the original material diluted by a factor of 100−6=10−12 (one part in one trillion)(1/1,000,000,000,000). Higher dilutions follow the same pattern. In homeopathy, a solution that is more dilute is described as having a higher potency, and more dilute substances are considered by homeopaths to be stronger and deeper-acting remedies. The end product is often so diluted that it is indistinguishable from the dilutant (pure water, sugar or alcohol).
Hahnemann advocated 30C dilutions for most purposes (that is, dilution by a factor of 1060). In Hahnemann’s time it was reasonable to assume that remedies could be diluted indefinitely, as the concept of the atom or molecule as the smallest possible unit of a chemical substance was just beginning to be recognized. The greatest dilution that is reasonably likely to contain one molecule of the original substance is 12C.
Some homeopaths developed a decimal scale (D or X), diluting the substance to ten times its original volume each stage. The D or X scale dilution is therefore half that of the same value of the C scale; for example, “12X” is the same level of dilution as “6C”. Hahnemann never used this scale but it was very popular throughout the 19th century and still is in Europe.
This potency scale appears to have been introduced in the 1830s by the American homeopath, Constantine Hering. In the last ten years of his life, Hahnemann also developed a quintamillesimal (Q) or LM scale diluting the drug 1 part in 50,000 parts of diluent. A given dilution on the Q scale is roughly 2.35 times its designation on the C scale. For example a remedy described as “20Q” has about the same concentration as a “47C” remedy.