Schuessler salts

The meaning and method of biochemistry

The Schüßler salts are made up of 12 organic substances

The founder of the biochemical healing method is the German doctor Wilhelm Heinrich Schuessler (1821- 1898). In the first years of his medical practice he devoted himself entirely to homeopathy, but was always looking for a "simplified therapy". In 1873 he published in the "General Homeopathic Newspaper"An article with the heading"An abbreviated homeopathic therapy". Here he expresses that the general medicines had become dispensable for him. He works with twelve organic substances, so called physiological functional means of the organism.

In later publications homeopathy is no longer mentioned and he justifies this as follows: “My healing method is not a homeopathic one because it is not based on the principle of similarity but on the physiological-chemical processes in the human organism.'


Physiology (from the Greek word physis = nature) is the Science of the chemical-physical processes in the living organism.


As biochemistry (from the Greek word Bios = life) Schüßler described his method of treatment because he had recognized that the structure and viability of the human organism essentially depend on its existence certain mineral salts, just this functional means - these are inorganic substances such as table salt, iron phosphate, calcium phosphate, calcium fluoride and others –Are dependent.

A deficiency leads to Inability to function first in the area of ​​the cell, the cell structure and finally the individual organs. In this sense, inability to function generally means illness.
The pathologist Professor Virchow defined this as "Disease of the cell". Schüßler was strongly influenced by him and they agreed that the basic cause of all life processes, as well as the cause of changes in organs and tissues, is to be found in the excitability of the cell and that thus the emergence and nature of a disease essentially depends on the activity of the Cell is to lead back.

Biochemical therapy

The realization that the normal activity of the cell depends on a normal content of inorganic salts was the logical step for Schüßler to further develop his biochemical therapy. He described the deviation from the normal content, especially the lack of these nutritional salts, as the cause of the diseases. In case of illness, it should Deficit of inorganic substances can be balanced by drug intake.
An approach like "To replace the missing with the missing“To think, but rather of that Triggering a stimulus or the Transmission of informationwhich restores the cells, the inorganic salts necessary for them take in more from food.
Today, Schüßler's ideas are easy to understand, because knowledge of the role of minerals and trace elements and the importance of healthy nutrition have become common knowledge.

The basics of such a biological or biochemical therapy can already be found in the basics Hippocrates and Paracelsus described.

The Dutch physiologist Molleschott provided in 1852 with his publication “Cycle of life“For a dissemination and awareness of Schüßler's teaching.

The 12 functional means

Schüßler and his successors have shown that the biochemical agents open up a wide range of therapeutic possibilities. This therapy is plausible, risk-free, tailored to the individual and natural, in the full meaning of the word. Certainly there are limits to this method, which every practitioner must recognize for himself.

From the point of view of that time, Schüßler recognized 12 mineral salts present in the blood and tissues, each of which exerts an influence on certain functions of the body organs.
These are:

  1. Calcium fluoratum (Fluorspar- calcium fluoride)

  2. Calcium phosphoricum (Phosphoric acid lime - calcium phosphate)

  3. Ferrum phosphoricum (Iron phosphate)

  4. Potassium chloratum (Potassium chloride)

  5. Potassium phosphoricum (Potassium phosphate)

  6. Potassium sulfuricum (Potassium sulfate)

  7. Magnesium phosphoricum (Magnesium phosphate)

  8. Sodium chloratum / muraticum (Sodium chloride = table salt)

  9. Sodium phosphoricum (Sodium phosphate)

  10. Sodium sulfuricum (Sodium sulphate, Glauber's salt)

  11. Silicea (Quartz, silica, sand)

  12. Calcium sulfuricum ( Calcium sulfate, plaster of paris)

The 12 supplements

After Schüßler's death, further research was carried out and further minerals were recognized in the tissues and in the blood, and they were also considered to be important for the health of the organism. They are called supplements and in some cases they are part of the biochemical treatment. The sense and necessity of these means are discussed and sometimes questioned. The representatives of the "classic“They consider Schüßler means to be dispensable, other practitioners would not want to do without them.

Originally 5 supplements have been expanded to 12 over time. The numbering continues according to the classic 12 means:

  1. Potassium arsenicosum (Potassium arsenite)

  2. Potassium bromatum (Potassium bromide)

  3. Potassium iodate (Potassium iodide)

  4. Lithium chloratum (Lithium chloride)

  5. Manganum sulfuricum (Manganese sulfate)

  6. Calcium sulfuratum (Calcium sulfide)

  7. Cuprum arsenicosum (Copper arsenite)

  8. Potassium aluminum sulfuricum (Potassium aluminum sulfate / alum)

  9. Zinkum chloratum (Zinc chloride)

  10. Calcium carbonicum (Calcium carbonate / lime)

  11. Sodium bicarbonicum (Sodium bicarbonate / baking soda)

  12. Arsenum iodatum (Arsenic triiodide)

The 11 biochemical ointments

The functional products are also available as ointments for external use.

With the ecxeption of Calcium sulfuricum All means are also available in the form of ointments for external use. With the same numbering as the above functional means, they have an extremely versatile area of ​​application.

  • Calcium fluoratum / ointment

Use for poorly healing lower leg ulcers, for painful tears in the skin, for example at the corners of the mouth, scar bulges, suppurations on the nail fold, for hemorrhoids and varicose veins.

  • Calcium phosphoricum / ointment

Use for effusions in the joints, inflammation of the bursa, delayed healing after bone fractures, swelling of the lymph glands, back pain, but also for purulent rashes.

  • Ferrum phosphoricum / ointment

Use on fresh wounds, broken bones, bruises and sprains. Also with itchy skin rashes with small pustules, sebum eczema.

  • Potassium chloratum / ointment

Use for inflamed herpes-like skin rashes, for dry rashes with flour-like scales. Even with corns and warts on the hands.

  • Kalium phosphoricum / ointment

Use for lichen planus in children, especially on the face and for hives-like rashes. Also with circular hair loss, nerve pain, muscle weakness. For symptoms of paralysis as a result of a stroke, polio, or muscle wasting.

  • Kalium sulfuricum / ointment

Use for nodular rashes, purulent blisters, itchy skin, dry skin with a burning sensation. Excessive flaking, inflammation of the eyelid margin. Even with rheumatic limb pain.

  • Magnesium phosphoricum / ointment

Itchy skin in old age, with psoriasis as an accompanying therapy, with boring and stabbing nerve pain that wanders in the body.

  • Sodium chloratum / ointment

Use for blisters on the lips, acne, blackheads, fungal skin diseases with white scales. Itchy insect bites, soreness of small children, tears in the anus (fissures).

  • Sodium phosphoricum / ointment

Use for boils as soon as pus forms, cradle cap, vesicular and pustular rashes, incipient breast inflammation.

  • Sodium sulfuricum / ointment

Use for fungal skin diseases, purulent rashes, frostbite, nerve pain, corns.

  • Silicea / ointment

Use for weeping eczema on hands and feet, poorly healing wounds, inflamed calluses on the feet, corns.

Manufacture of biochemical agents

With the Schüßler salts, targeted medicinal stimuli are important, which support and stimulate the body's healing efforts in an appropriate manner.

You might also be interested in that: Lose weight with Schüssler salts

Only the smallest amounts of substance in the finest distribution are capable of doing this, as they correspond to the concentrations in the blood and in human tissue.

All functional substances and supplements according to Schüßler are triturated with milk sugar, potentized according to the rules of homeopathy and brought into tablet form. The active substances are therefore as open-minded as possible, combined with the highest level of responsiveness. They can pass through cell membranes as ions.

This removes the inhibition of the exchange of substances between the cell interior and the space between the cells and the cell can regenerate itself biologically and biochemically.

The functional means are available in D 3, D 6 or D 12. The supplements in the potencies D 6 and D 12. The biochemical ointments always contain the mineral active ingredients in the D 6.


- with regard to human traits and character traits that are taken into account when selecting the biochemical agents -


One is pacifist. One avoids aggression (is afraid of conflict), ensures balance and harmony, creates peace. Sometimes quite constructive, but you also like to sweep problems under the carpet to make everything appear perfect on the outside. One is afraid of loss (Divorces, children go out of the house), Fear of physical and emotional pain. This results in internal tension and inhibitions on the emotional level.


You have your principles of what is right and what is wrong and you stay true to them, you are conservative and you follow rules. Consciousness of duty and responsibility, Work as a task, supply on a material level (Feelings are neglected). You are wooden and closed, but optimistic!
One likes to take on responsibility, has honorary posts and sees representation as a duty. Contacts and relationships are expanded also in order to take advantage of them, no friendly contacts, likes to have a second pillar. Quite willing to get involved in charity. You overwork and suffer from Fatigue syndrome.


You have a lot of fears, you are sensitive to criticism, the question always comes up: "What do the others think?“You are insecure and often embarrassed, so you like to shield yourself. One is basically afraid (Fear of everything). Often shows a hard shell, but has a soft core.


Reflects our zeitgeist. Fast money, shine and a clean surface. Behind it harshness and numbness and the fear of not getting enough.


One is compassionate and communicative. Has many friends and maintains good contact with neighbors and work colleagues. You are homesick, outside you feel anxious and suffer from uncertainty and alienation. One is afraid of darkness and thunderstorms.


You are energetic, you force yourself to be in all situations Persevere and persevere. One is prone to violence, is irritable and it can happen that "the hand slips“.


One is not shiny and hard on the outside like Fluoratum, but very mindful of the external impact. However, only your own opinion is important, others don't care. Beauty, clothing, is very important. One wants to experience joy and love, is selfish and jealous.


One suffers from self-pity (didn't have a mother, no one took care of me!). Complaints about a lack of attention and care from the mother. You try to compensate for a lack of self-confidence with a lot of knowledge.


Considered a big one Remedies. You are depressed and closed. You impose restrictions and prohibitions on yourself. Inwardly very sensitive and conservative.


You need a stable place, a home. The family is very important, always looking for love and harmony. Failure to do this can result in hatred.

You try your own positive image build up (show strength), this is not about shine, you don't want a false shine (also only discreetly made up).

This applies to games as well as to relationships, neighborhoods, friendships.

The biochemical agents 1 - 24 and their main areas of application

Schuessler salts number 1-8
  • Calcium fluoratum (1)

It is found in the enamel of the teeth, in bones and epidermal cells and where elastic tissue is found. The remedy relieves the blood circulation, strengthens the small vessels and counteracts hardening of the vessels.

Calcium fluoratum is the most important agent for the supporting and connective tissue (Silicea can be used as a follow-up agent). Use for connective tissue weakness, varicose veins, hemorrhoids, calcification of the arteries.
Tendency to caries, intervertebral disc damage, joint problems, premature aging of the skin.
Teeth break off easily, enlarged thyroid, hard tonsils, hunger pains when the stomach is empty (better after eating), Heartburn.
Joint pain relieved by warmth and exercise. Nodular arthritis, hard nodules in acne. Everything that should be soft is hard and vice versa!

The patients have light, thin skin, and vessels are blue translucent.

One is sensitive to noise, bright light and smell., Reacts with a headache. Old scars itch and can become infected. One suffers from excessive sensitivity to pain. One is in need of protection (hard shell soft core), eats bacon as protection.

  • Calcium phosphoricum (2)

It is the most abundant salt in the body. Mainly forms the hard bone mass and is present in the cells. It acts on the cell membranes and is involved in protein formation. It is the biochemical building and strengthening agent.

With bone and dental diseases, poorly healing bone fractures, anemia, easy fatigue, nervous disorders, sleep disorders (also in infancy, childhood and puberty).
Also for menstrual cramps, during pregnancy and after serious illnesses during convalescence. The remedy works slowly and must be taken over a long period of time.

The patients are often slender, thin, and tall. They lack stability, they live with and through other people and they hate boredom. Boredom creates dissatisfaction, fears routine, sighs, groans, is sullen and forgetful (everything that seems unimportant).

Often children and adolescents who grow too quickly are affected, they have pain in the joints, anemia, and internal weakness. The children are up to about 10 years old, rather plump (Calcium) and then become thin and long (phosphorus). You suffer from poor concentration, poor performance, school headache. You suffer from the dichotomy between the desire for independence (Avoid getting bored) and the desire for protection and security at home. If they leave home they are homesick.

  • Ferrum phosphoricum (3)

Iron has a far-reaching and vital role in the human organism. Iron is part of the red blood pigment, is found in all cells, is involved in many chemical reactions and is an important active ingredient in the immune system.

Ferrum phosphoricum is the 1st inflammatory agent. Used in the first inflammatory stage of a disease (dry swelling character) in all sudden inflammatory diseases, with and without fever in the initial stage.

Use for childhood diseases, anemia, circulatory disorders, rheumatic complaints, lack of concentration, physical overexertion.

You don't feel very sick, have only a moderate fever, if at all.

Alternation between pallor and red cheeks. Cough, mucous membranes turn red. Beginning earache, no severe pain, rather moving and creeping.

All complaints worsen at night, as well as by warmth and exercise. Peace and cool air relieve the symptoms.

  • Potassium chloratum (4)

Potassium is part of every cell. Like sodium, it has specific effects on nerve and muscle excitability. Potassium plays an important role in the formation of protein and the utilization of carbohydrates and is an indispensable part of the organism. A lack of potassium leads to serious disorders and changes in the body.

Potassium chloratum is the 2nd inflammatory agent. Main remedy for catarrh of various organs and mucous membranes, when the secretions are viscous and stringy and form a whitish, gray and slimy mass. White-gray scales on the skin or white coatings on the mucous membranes.

The patients are very conscientious and eager to take care of other people (Children, parents) fixate and forget yourself - life turns gray!

Kalium chloratum is prescribed for ear, eye and throat diseases that are accompanied by the symptoms described above. Also for bronchitis, pneumonia, pleurisy as an accompanying therapy. Also for rheumatism, tendinitis, warts, burns.

The symptoms improve with warmth, and get worse with exercise and spicy, fatty foods.

  • Potassium phosphoricum (5)

As already described, potassium is a very important substance in the organism.

A deficiency not only leads to physical disorders and fatigue of the organs, but also to psychological symptoms such as depressed and depressed mood, anxiety, sadness and poor memory.

Kalium phosphoricum is the main remedy for acute, chronic and severe illnesses and states of exhaustion that have just been overcome "I can not anymore!

Use for nervousness, exhaustion, melancholy, hysteria, insomnia, poor memory, muscle weakness, back pain, nervous heart problems, anxiety with palpitations. For the supportive treatment of heart disease, paralysis and general loss of strength in serious illnesses. Poorly healing wounds with putrid, foul smelling secretions.

Careful, light movement relieves the symptoms; exertion makes them worse.

  • Kalium sulfuricum (6)

To Ferrum phosphoricum as the first inflammatory agent for dry swelling without secretion and Potassium chloratum As a second inflammatory agent for viscous secretions, potassium sulfuricum is the third inflammatory agent for yellow-slimy secretions.

Kalium sulfuricum is prescribed for all diseases that "don't really come out.“With chronic inflammation, skin disorders with peeling, chronic and purulent mucous membrane catarrhs ​​with yellow, foul-smelling secretions in large quantities and gastrointestinal catarrhs. Generally to promote all excretions and detoxification processes.

Particularly suitable for older people who sacrifice themselves without claiming anything in return. Fear of failure, listlessness and depression arise.

One has wandering pains (not punctiform like sodium bicarbonicum), the mood is sad and anxious. The symptoms worsen in the evening and in closed, warm rooms. Everything improves in cool, fresh air.

Read more about this: Schüsslersalz No. 6

  • Magnesium phosphoricum (7)

The "Anticonvulsants.“In addition to potassium, magnesium is a very important mineral in the human organism. Magnesium influences the excitability of nerve cells, regulates neuromuscular excitability and heart function.

The remedy is used for cramps of all kinds, against colic and pain, nerve irritation, migraines. Also for flatulence or diarrhea with cramp-like pain.For teething problems and spasmodic coughs of small children, for spasmodic pain in connection with menstruation.

The pain is colicky and often shooting up, like electric shocks.

Warmth improves, cold worsens the symptoms. You feel the need to press on the painful area.

  • The "Hot Seven"

If you want to get a quick effect on cramps and colic, dissolve 10 tablets of Magnesium phosphoricum in a glass of hot water and stir several times. You take a sip of it every 2 to 5 minutes. The name is based on the fact that Magnesium phosphoricum is the 7th remedy according to Schüßler.

  • Sodium chloratum (8)

Table salt has a very important biological meaning in the body; it is absolutely vital. Potassium is mainly found outside the cells, sodium inside the cell (Sodium-Potassium Pump). Sodium regulates the water balance and the osmotic pressure. For this, an adult person in temperate zones needs about 5 to 8 g of table salt per day. Sodium stabilizes the acid-base balance, ensures the excitability of muscles and nerves, supports the formation of new cells and stimulates the formation of red blood cells.

Sodium chloratum is a "dark and heavy medium“His main theme is grief also linked to suicidal thoughts.

Older patients are mostly affected. You carry something around with you, live frozen and looking back (How would it have been if? If only I had then ...!)

You can't let go of unpleasant things from before. One is locked (not be in the flow!), suffers alone, cries alone (Tears taste very salty and sting on the skin), is unforgiving (forgets neither bad nor good!). The eyes water in the cold wind, you have dark circles under your eyes.

You are afraid of being disappointed, you shut yourself up, you don't feel comfortable in company, you prefer to be alone.

Sodium chloratum is used for migraines, school headaches, loss of appetite, emaciation (from top to bottom, pear-shaped, throat emaciated), Mucous membrane catarrh with watery discharge, watery diarrhea, weeping skin rashes, rheumatic complaints, also with hysteria and lack of drive.

One likes the sun (not the direct one), but legs get heavy in the heat. The intensity of the complaints changes with the sun, aggravation in the midday hours, improvement in the morning, evening and night. Longing for salt, much thirst. Everything is made worse by mental overexertion and in damp cold weather. Relief from dry, warm (also cool, but not cold) and fresh air.

Schuessler salts number 9-24
  • Sodium phosphoricum (9)

Widespread in the organism, it is particularly important in the elimination of metabolic end products and to reduce the general susceptibility to inflammation. It keeps uric acid in solution, which is excreted through the kidneys.

Sodium phosphoricum affects the Carbonic exchange of the blood and the metabolism of lactic acid, which is formed from glycogen during muscle work.

The remedy sodium phosphoricum is a tried and tested solution for any type of excess acid Neutralizing agent. With excess acid in the stomach, with heartburn, acid vomiting, gastric mucosal inflammation with acid belching, fermented stools, with rheumatism, sciatica and gout.

Also for swelling of the glands, inflammation of the eyes, almond and throat catarrh, bladder catarrh, skin rashes with honey-like, cream-like secretions. Yellow, mustard-colored coating on the tongue.

All complaints before or during thunderstorms and worse in damp and cold weather, very sensitive to the weather. Exercise and fatty foods also make it worse.

  • Sodium sulfuricum (10)

It has the task of dehydrating the body, eliminating metabolic waste products, detoxifying the organism and stimulating the flow of bile.

At all Diseases of the excretory organs (Liver, gall bladder, kidneys, bladder), for rashes, oozing Lower leg ulcers, Water retention in the tissue (edema), flu-like infections and rheumatic complaints. The secretions are yellowish-green, watery.

The complaints, which often appear periodically, get worse towards morning, in damp weather and in a damp environment (apartments).

The patients are very chilly and freeze very easily, they are irritable, indifferent and depressed. They often have morning diarrhea and a sudden urge to defecate.

  • Silicea (11)

Silicea is an indispensable part of the connective tissue and important in the structure of the skin and mucous membranes, nails, hair and bones. It increases the resistance and mechanical strength of the tissue.

The silica promotes the absorption of calcium from food and has a positive effect on the activity of the phagocytes which are important for the immune system.

Silicea is the main remedy against acute and chronic inflammation and suppuration of all kinds. Even with slack blood vessel walls (varicose veins, hemorrhoids). At Stunted growth on nails and hair, delayed wound healing, caries and rickets. It is also considered a general regenerative.

The symptoms worsen in the cold, in the evening, at night and when moving. Warmth and warm wrapping improve the symptoms. So-called “Silicea children” are also known. The facial features look downright "old", they are malnourished with sagging skin and muscles, weak, depressed and unable to perform.

  • Calcium sulfuricum (12)

Important remedy in all purulent processes, especially in chronic suppurations. Calcium sulfuricum stimulates the metabolism.

Means for abscesses, boils, tonsillitis, purulent processes in bronchitis, runny nose, inflammation of the paranasal sinuses with foul-smelling bloody-purulent discharge. Also for chronic rheumatism, insomnia, poor memory and dizziness.

The biochemical supplements

  • Potassium arsenicosum (13)

The product is primarily related to the skin and is used for stubborn skin conditions, including chronic ones with intense itching.

Also with weakness, cramps and paralysis, weight loss, watery diarrhea.

  • Potassium bromatum (14)

The agent acts primarily on the skin and the nervous system.

It is used for nervous visual disturbances, insomnia and as a sedative. An accompanying treatment with potassium bromatum can also be useful in the case of thyroid diseases and irritation of the mucous membranes.

  • Potassium iodate (15)

The agent influences the composition of the blood, dampens high blood pressure and stimulates the heart and brain blood flow and their performance.

It promotes appetite and digestion. Its iodine content makes it a suitable remedy for disorders of the thyroid function.

Kalium iodatum is also used for arteriosclerosis and rheumatic joint problems.

  • Lithium chloratum (16)

The remedy is particularly effective for gout and rheumatic diseases that are accompanied by painful swelling and stiffening of the joints.

It can also bring relief in the case of general exhaustion and emaciation, as well as inflammation in the area of ​​the lower urinary tract. Lithium chloratum can also be tried as an accompanying treatment in manic-depressive states.

  • Manganum sulfuricum (17)

The agent can be used alternately with Ferrum phosphoricum for anemia, general exhaustion and circulatory disorders.

Treatment with Magnesium sulfuricum can also bring relief for wandering rheumatic complaints and toothache.

  • Calcium sulfuratum (18)

The remedy is indicated for physical exhaustion and weight loss despite cravings.

  • Cuprum arsenicosum (19)

Accompanying remedy for neuralgia, sciatica, muscle spasms, epilepsy.

It relieves the symptoms of colic in the gastrointestinal tract and is used for water retention in the body in connection with kidney problems.

  • Potassium aluminum sulfuricum (20)

It is used for colic caused by constipation, as well as for dizziness and dysfunction in the nervous system.

  • Zinkum chloratum (21)

The remedy is important for growth and the normal course of metabolic processes. It works particularly on the brain and spinal cord. With nervous insomnia, nervous diseases. Also for cramp-like symptoms before and during menstruation.

  • Calcium carbonicum (22)

For chronic catarrh of the mucous membranes of the eyes, ears and airways and for swelling of the lymph glands. The remedy Calcium carbonicum is also said to have an effect against premature aging, but this has to be proven.

  • Sodium bicarbonicum (23)

The agent activates the metabolism, promotes the excretion of urinary substances such as uric acid and stimulates the activity of the pancreas. Also used as supportive treatment for weight loss.

  • Arsenum iodatum (24)

The agent mainly acts on the mucous membranes of the lymph glands and lungs and on the skin in weeping eczema and acne. Also used for weight loss and great weakness due to lung diseases. In children, a remedy for chronic, prolonged inflammation of the intestinal mucosa and the associated weight loss. Asthma and hay fever are also among the areas of application.

Note on self-treatment with biological functional agents and supplements

Self-treatment should be avoided in the case of long-lasting health disorders, severe organ diseases, violent febrile processes, contagious diseases. When in doubt, every responsible person will seek treatment from a doctor.

Treatment with biochemical agents

In the course of treatment with biochemical agents, the restoration of the "Inner balance" and the functioning of the organism a period of time passes that must be filled with patience and critical observation. A rapid effect can only rarely be observed.

The effect of the remedies depends on the initial situation of the patient, the intensity of the health disorder, his physical and mental state.

Dosage and intake

In acute cases one takes one tablet every 5 minutes of the corresponding remedy until improvement. Subsequently and in chronic conditions One tablet 3 to 6 times a day. With Calcium fluoratum D3 the Maximum dose of 4 tablets not be exceeded.

All remedies should be taken ½ hour before or 1 hour after meals. It is allowed to dissolve slowly in the mouth without any additional liquid. In this way, the active ingredient can be absorbed directly by the oral mucosa, bypassing the gastrointestinal tract, and enter the bloodstream.

During treatment with biochemical agents should be strong stimuli such as alcohol, nicotine, hot spices Be avoided.

For children under 12 years of age, the usual dose for acute symptoms is one tablet every hour. Then and for chronic complaints up to 3 tablets daily. For infants and toddlers, the tablets are crushed into a powder and this is placed directly on the tongue.

It is generally recommended not to take different drugs at the same time. If two remedies are necessary, they should be taken at different times, preferably alternating daily.

What potency?

It is the case with almost all functional means D6 second hand. Calcium fluoratum, Ferrum phosphoricum and Silicea used to be exceptions. These were used by Schüßler because of their lower solubility in D12. Today it is quite common to take these remedies in the D6.