Schuessler's 12 Tissue Salts: A Glossary of Minerals and Their Traditional Uses

What the Twelve Tissue Salts Are

Schuessler tissue salts are twelve mineral compounds that the nineteenth-century German physician Wilhelm Heinrich Schuessler identified as the inorganic constituents present in human tissue. In his system, each salt corresponds to a specific mineral that cells are said to require for normal function, and each is prepared in a highly diluted form and given a number from 1 to 12. The numbering is a naming convention, not a ranking of importance.

The twelve are: Calcium fluoride (1), Calcium phosphate (2), Calcium sulphate (3), Ferrum phosphate (4), Potassium chloride (5), Potassium phosphate (6), Potassium sulphate (7), Magnesium phosphate (8), Sodium chloride (9), Sodium phosphate (10), Sodium sulphate (11) and Silica (12). Each is traditionally linked with particular tissues, organs or symptom patterns, though these associations come from the biochemic tradition rather than from modern clinical trials.

The glossary below defines each salt in turn and summarises the uses traditionally attributed to it. These are historical and traditional uses. They are not established medical indications, and no claim is made here that any tissue salt treats, cures or prevents disease.

The Calcium Salts: Numbers 1, 2 and 3

Calcium fluoride, number 1, is traditionally described as a constituent of tooth enamel, bone surface and elastic tissue such as the walls of blood vessels and connective fibres. In biochemic literature it is associated with conditions in which tissue loses elasticity or becomes hardened, and with dental and joint complaints. It is often the salt considered when a practitioner is thinking about connective tissue and the mineralised structures of the body.

Calcium phosphate, number 2, is the most abundant mineral salt in the body and is traditionally linked with bone, teeth and blood. Biochemic practitioners associate it with growth, repair and recovery, and it is commonly mentioned in relation to children's development, convalescence and slow-healing tissue. Because it is also a recognised nutritional mineral, readers should note that the diluted tissue salt form and a dietary supplement are not the same thing.

Calcium sulphate, number 3, is described in the tradition as a cleanser and is associated with suppuration, the process by which the body discharges waste or infected material. It is traditionally considered where skin eruptions, discharges or slow-healing wounds are present, and is often paired in biochemic texts with salts 1 and 2 for tissue repair.

The Iron and Potassium Salts: Numbers 4 to 7

Ferrum phosphate, number 4, is the iron salt and is traditionally associated with the blood and with oxygen transport. Biochemic writers describe it as the salt of congestion and inflammation, used where there is redness, heat, throbbing or a sense of fullness. It is also the salt most often mentioned in connection with fatigue and pallor in the tradition, though iron status is a matter for blood testing and medical advice rather than self-prescription.

Potassium chloride, number 5, is defined as a constituent of muscle, blood and glandular tissue, and is traditionally linked with the production of fibrin, the protein involved in clotting. It is associated with sluggish, sticky or thickened states, and with glandular swelling. Potassium phosphate, number 6, is described as a nerve nutrient and is associated with the nervous system, mental fatigue and low mood in biochemic literature.

Potassium sulphate, number 7, is traditionally described as an oxygen carrier working alongside iron, and is associated with the skin and with the exchange of gases in tissue. It is often considered where the skin appears dull or where there is a feeling of weariness. As with all twelve, the traditional picture is a set of observed patterns rather than a pharmacological mechanism.

• Ferrum phosphate (4): iron salt, traditionally linked with blood, inflammation and congestion.
• Potassium chloride (5): associated with muscle, glands and fibrin production.
• Potassium phosphate (6): described as a nerve nutrient in biochemic writing.
• Potassium sulphate (7): traditionally paired with skin and oxygen exchange.

The Magnesium and Sodium Salts: Numbers 8 to 11

Magnesium phosphate, number 8, is defined as the salt of muscle and nerve and is traditionally associated with cramping, twitching, tension and pain described as sharp or shooting. It is one of the most frequently cited salts in biochemic texts and is often mentioned alongside potassium phosphate where nervous tension is the theme. Magnesium is a mineral with recognised roles in the body, but the tissue salt preparation is a diluted form, not a measured nutritional dose.

Sodium chloride, number 9, is common salt and is described as a constituent of body fluids and connective tissue. In the tradition it is linked with the distribution of water in the body, with mucous membranes and with conditions where fluid balance appears disturbed. Sodium phosphate, number 10, is defined as an acid-neutralising salt and is associated with the digestion of fats and with the liver and bile in biochemic writing.

Sodium sulphate, number 11, is traditionally described as a remover of excess fluid and is associated with the liver, pancreas and the elimination of water. It is often mentioned where there is a sense of heaviness or fluid retention. Each of these three sodium salts illustrates how the system maps a mineral to a body function and then to a set of symptoms.

Silica, Number 12

Silica, or silicon dioxide, is the twelfth salt and is described in the tradition as a cleanser and a constituent of connective tissue, hair, nails and skin. Biochemic writers associate it with the removal of waste from tissue, with suppuration that is slow to resolve, and with the strength of skin, hair and nails. It is frequently mentioned in the same breath as calcium fluoride when the topic is structural tissue.

Silica is also the salt most often confused with the dietary supplement of the same name. The supplement is typically derived from plant sources such as horsetail and is taken in milligram amounts; the tissue salt is prepared by serial dilution and is taken in much smaller quantities. The two are not interchangeable, and neither should be used to replace medical treatment for a skin or nail condition.

How the Twelve Are Traditionally Selected and Combined

In biochemic practice, a practitioner does not usually choose a single salt in isolation. The traditional method is to read the presenting pattern, identify the tissue or function involved, and then select one to three salts whose definitions match that pattern. Combinations are common because a single complaint is rarely confined to one tissue type. For example, a slow-healing skin problem might draw on salts 1, 3 and 12, while a nervous complaint might draw on 6 and 8.

The salts are also traditionally grouped by family. The calcium salts (1, 2, 3) are associated with structure and repair; the iron and potassium salts (4, 5, 6, 7) with blood, muscle, nerves and skin; the magnesium salt (8) with muscle and nerve; the sodium salts (9, 10, 11) with fluid balance, mucous membranes and digestion; and silica (12) with connective tissue and elimination. This grouping is a memory aid used in the tradition, not a classification recognised by pharmacology.

Readers who want to know how the salts are taken, in what potency and how often, will find that covered in the separate dosage guide on this site. The present page is concerned only with what each salt is defined as and which uses the tradition attaches to it.

What the Traditional Uses Do and Do Not Establish

The uses listed above come from biochemic literature and from more than a century of practitioner observation. They are not the result of randomised controlled trials, and the fact that a salt has been associated with a symptom for a long time does not by itself demonstrate that it works. The mineral content of a tissue salt preparation is extremely small, and the rationale for its use rests on the biochemic system's own logic rather than on conventional biochemistry.

This matters for how the glossary should be read. A definition such as 'salt 8 is associated with cramping' tells you what the tradition says, not what a clinician would recommend. Persistent cramps, skin problems, fatigue, digestive complaints or fluid retention can have causes that require proper investigation, and a qualified healthcare professional is the right person to assess them.

Tissue salts are generally described as low-risk when used as directed, but that is not the same as being suitable for everyone. Anyone who is pregnant, breastfeeding, taking prescription medication or managing a diagnosed condition should seek advice before adding any remedy to their routine.