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The 12 Biochemic Tissue Salts: Uses, Dosage and Side Effects

The 12 Biochemic Tissue Salts: Uses, Dosage and Side Effects

Biochemic tissue salts are twelve mineral compounds. Each one is ground with milk sugar and pressed into a small tablet. A German doctor named Wilhelm Schuessler published the list in 1873, and he said plainly that his system was not homeopathy. On one filed label, a 6X tablet holds about 60 nanograms of mineral and 97.7% milk sugar. So the honest safety question is about the sugar base, not the mineral. This page gives all twelve salts, the dose, and the arithmetic.

Small white biochemic tissue salt tablets spilling from a glass bottle onto a wooden surface

What a biochemic tissue salt is

A tissue salt is one of twelve mineral compounds. The mineral is ground with milk sugar, again and again, until very little is left. What remains is pressed into a tablet.

Wilhelm Heinrich Schuessler (1821–1898) was a German doctor. He first published his list of twelve in 1873, and it was later expanded into a book, Eine abgekürzte Therapie, which reached its 42nd edition by 1917.

He believed illness comes from a shortage of one of twelve mineral salts inside the cells. Give a very small amount of the missing salt, he said, and the cell corrects itself.

No randomised trial of these salts shows up in the medical literature. The evidence section below prints the exact search, so you can rerun it.

Schuessler said this was not homeopathy

Almost every shop in India files biochemic tablets under homeopathy. Schuessler would have objected.

He rejected Hahnemann's principle of similars, drug provings, the vital force and potentisation. He called his method biochemistry, grounded in the chemistry of the body, and stated in his 1873 article that it was not homeopathic.

Engraved portrait of Wilhelm Heinrich Schuessler, the German physician who created the biochemic system of twelve tissue salts

His American editors recorded the same thing. In 1899, Boericke and Dewey wrote that Schuessler "denies… all connection with Homoeopathy, and insists that his method is not based upon the homoeopathic law of cure."

Both authors were homeopaths, and argued the two systems fitted together anyway. That is why the tablets sit on homeopathy shelves today.

There is a sharper irony. Hahnemann's Organon, aphorism 13, dismisses disease as a material thing hidden in the body — "an absurdity that could only be imagined by minds of a materialistic stamp." A cell-salt shortage is exactly that kind of material cause.

Kent never engaged with the system either. We searched the full text of his Lectures on Homoeopathic Philosophy on 26 August 2026. Zero hits for Schuessler, tissue salts, cell salts or biochemistry.

Two numbering systems, and why your box may disagree with the internet

The twelve are numbered two different ways, and the lists do not match. This trips up most buyers.

The classical German order is Schuessler's own. It appears in Boericke and Dewey (1899), and German makers still follow it. Many Indian makers number them near-alphabetically by Latin name instead.

Latin name (box abbreviation) Classical no. Indian no.
Calcarea fluorica (Calc Fluor) 1 2
Calcarea phosphorica (Calc Phos) 2 1
Ferrum phosphoricum (Ferr Phos) 3 4
Kali muriaticum (Kali Mur) 4 5
Kali phosphoricum (Kali Phos) 5 6
Kali sulphuricum (Kali Sulph) 6 7
Magnesia phosphorica (Mag Phos) 7 8
Natrum muriaticum (Nat Mur) 8 9
Natrum phosphoricum (Nat Phos) 9 10
Natrum sulphuricum (Nat Sulph) 10 11
Silicea (Sil) 11 12
Calcarea sulphurica (Calc Sulph) 12 3

The rule is one line: ignore the number, read the Latin name. Follow a German chart into an Indian shop and you can walk out with the wrong salt.

Why Calcarea sulphurica is number 12 in one list and number 3 in another

Calcarea sulphurica was the last salt Schuessler added, and the one he later took away.

Boericke and Dewey record it plainly: "In the last years of Dr. Schussler's life this remedy was discarded from his list, leaving only eleven, instead of twelve tissue remedies." German lists still place it at 12, with a note that he removed it. It sits at 12 because it arrived last. Indian lists sort by name, so it lands at 3.

What each of the twelve is classically used for

These indications come from Schuessler, Boericke and Clarke, written down from bedside observation in the 1800s. They are not trial results. They say when a prescriber picks a salt, not what will happen.

The potency column shows what Schuessler himself used. On a German box you will see D instead of X. D means decimal, and it is the same scale.

Salt Mineral Classically used for Usual potency
Calcarea fluorica Calcium fluoride Stony hard glands, veins that have lost stretch, cracked skin, enamel, bony outgrowths 12X
Calcarea phosphorica Calcium phosphate Slow teething, slow bone healing, poor growth in children 6X
Ferrum phosphoricum Iron phosphate The first hours of fever — flushed face, fast pulse, before any discharge 12X
Kali muriaticum Potassium chloride The stage after Ferrum Phos — white or grey coating, thick bland discharge 6X
Kali phosphoricum Potassium phosphate Nervous exhaustion, tiredness after mental strain, sleeplessness 6X
Kali sulphuricum Potassium sulphate Yellow sticky discharge, scaling skin, worse in a warm room 6X
Magnesia phosphorica Magnesium phosphate Cramping pain eased by warmth and pressure — period cramps, colic, neuralgia 6X
Natrum muriaticum Common salt Watery discharges, dryness with thirst, cold sores, headache from sun 6X
Natrum phosphoricum Sodium phosphate Sour risings, acidity, creamy yellow coating at the back of the tongue 6X
Natrum sulphuricum Sodium sulphate Complaints worse in damp weather and near water; bilious symptoms 6X
Silicea Silicon dioxide Boils that will not resolve, brittle nails, splinters working out 12X
Calcarea sulphurica Calcium sulphate Abscesses already discharging, slow-healing wounds, thick yellow discharge 6X

Four warnings no seller prints:

  • Ferrum Phos is not a treatment for anaemia. It does not raise haemoglobin. The sum is below.
  • Kali Mur has nothing to do with potassium chloride tablets prescribed for low potassium.
  • Calc Phos, Mag Phos and Nat Mur are not supplements. They cannot fix a calcium, magnesium or salt shortage.
  • Silicea carries a traditional caution about implants and scar tissue. That is old teaching, not a recorded harm.

What is actually inside a 6X tablet

Tissue salts are made by trituration — the mineral is ground with milk sugar, not dissolved in liquid.

Boericke and Dewey give the method: "One part of the drug to nine parts of sugar of milk, for at least one hour. This gives the first decimal trituration." Take one part of that, add nine parts of fresh milk sugar, and grind again. Each step cuts the mineral to one tenth.

Do that six times and you are at one part in a million. That is what 6X means.

Now the real numbers. One filed product label for a Ferrum Phos tablet declares a 60 mg tablet: Ferrum phosphoricum 6X, lactose 58.6 mg, magnesium stearate 1.25 mg. Two facts fall out of that.

  • The tablet is 97.7% milk sugar by weight.
  • The mineral weighs 60 mg × 10⁻⁶ = 60 nanograms — about one thousandth of a grain of table salt.

German tablets are bigger. A DHU Schüssler tablet declares 250 mg of trituration, again on lactose, so at D6 it carries 250 nanograms. No Indian maker publishes a tablet weight, so treat 60 mg and 250 mg as the range yours sits in.

The base is not always milk sugar. The same product is also filed on a sucrose base — 58.86 mg of icing sugar per 60 mg tablet. So read the ingredient line on your own pack.

6X, 12X, 30X and 200X — what actually changes

On the X scale, a bigger number means more dilute, not stronger.

Each X step divides the mineral by ten. Take the 60 mg tablet above and assume the mineral weighs about 500 grams per mole. These counts are order-of-magnitude, not exact.

Potency Dilution Mineral molecules in one 60 mg tablet
6X one part in a million about 70 trillion
12X one part in a trillion about 70 million
30X one part in 10³⁰ about one molecule shared between 14 billion tablets
200X one part in 10²⁰⁰ none at all

The point where the mineral runs out has a name. It is the Avogadro limit, and it falls at roughly 24X, the same as 12C. Multiply Avogadro's number, 6.022 × 10²³, by 10⁻²⁴ and the answer is under one molecule.

So 6X and 12X tablets really do contain the mineral — a microgram or less. 30X and 200X contain none. If your pack says 200X, the sugar base is the only ingredient there in any real quantity. Our homeopathy potency guide covers both scales.

Why Schuessler used 12X for three salts and 6X for the other nine

This is not a strength grading, and no trial has ever compared the two. Schuessler wrote one sentence about it: "I employ the sixth decimal trituration generally. Ferrum phos., Silicea and Calcarea fluor. I usually give in the 12th trituration."

That was written before 1898. Reckeweg's catalogue today sells Nr. 1 Calcium fluoratum, Nr. 3 Ferrum phosphoricum and Nr. 11 Silicea at D12, and the other nine at D6. The same three salts, 127 years later. The shelf reflects inherited habit, not a dose-finding study.

How many tablets to take

Three sources give three different answers. Here they are side by side.

Source Adult instruction
Filed product label 1 to 4 tablets, one to four times daily, ages 12 and over
Indian boxes and sellers 4 tablets, four times daily
Boericke & Dewey, 1899 A pea-sized powder hourly in acute illness; 3–4 times daily in chronic

Another filed label says "Dissolve 4 pellets under tongue 1-3 times per day" for ages 6 and over.

At WeClinic we prescribe inside that range — for most adults, about 4 tablets three to four times a day, with a review date set at the start.

Three points on taking them:

  • Let them dissolve in the mouth. Do not swallow them with water.
  • Keep a gap around food. DHU says half an hour before or after eating, and for a small child, dissolve the tablet in water first.
  • Stop at your review date if nothing has changed.

Doses for children, babies, pregnancy and breastfeeding

Filed labels say children under 12 should take these only under a practitioner's direction, and to ask first if you are pregnant or breastfeeding. One label gives 5 pellets for ages 12 and up, 3 for ages 3 to 11, and says to consult a doctor below age 3.

One line matters more than dosing, and it matters most for babies. Patients with congenital lactase deficiency, galactosaemia or glucose-galactose intolerance must not be given a lactose-containing medicine unless it is strictly necessary. Those rare inherited conditions are the real contraindication.

No trial evidence supports use in pregnancy. "It is very dilute" is a reason not to expect a benefit, not a reason to take something without asking.

Can you take more than one tissue salt at a time?

Yes, and that is what a bio-combination is. But the sugar adds up and the effect does not. Four products at once — a bio-combination plus three single salts — is 64 tablets a day. That is roughly 3.75 g of milk sugar on small tablets, or about 16 g on 250 mg ones. Pick the salt that fits your symptoms instead of stacking bottles.

Side effects of 6X biochemic tablets

Most pages answer this with "no side effects". That is not true. Four things are worth knowing, and none of them is the mineral.

1. The sugar base. It is 97.7% of the tablet on the label we checked. The next section is all about this.

2. The allergy warning on the label. Filed labels say not to use the product if you have ever reacted to it or to any ingredient in it. Lactose monohydrate is declared as milk-derived. Labels also say to stop and ask a doctor if symptoms persist or worsen.

3. Homeopathic aggravation. Classical practice describes symptoms briefly sharpening after a remedy starts. It is a traditional idea with no trial evidence behind it. If it happens, space the doses out and tell your prescriber. Our guide to homeopathy side effects goes further.

4. Delay. This is the harm that matters most. Promoting a tissue salt for a condition that needs proper treatment risks real damage, because it delays the diagnosis. A tablet that does nothing is not harmless if it keeps you from one.

Three worries are not realistic at 6X. The mineral is there in nanogram amounts, so fluorosis from Calc Fluor, iron overload from Ferrum Phos and a salt load from Nat Mur are all myths.

The lactose problem nobody prints on the box

A course means many tablets a day for weeks. So the sugar is worth doing properly.

Take the 60 mg tablet with 58.6 mg of lactose. Four tablets is 234 mg per dose. Four doses a day is about 0.94 g. On 250 mg German tablets it is about 1.0 g per dose and 4.0 g a day.

Now the benchmarks. Most people who are lactose intolerant can handle about 12 grams of lactose — roughly the amount in one cup of milk — with no symptoms or only mild ones. No single limit fits everyone, and medicines are an easy source to overlook. A common labelling threshold is 400 mg per dose: at or above that, anyone told they are lactose intolerant should ask a doctor or pharmacist.

Put the two together and the answer is calm.

  • A normal dose on small tablets, 234 mg, sits under the 400 mg threshold and under 8% of the 12 g figure.
  • A normal dose on 250 mg tablets, about 1.0 g, crosses it.
  • Stacking four products reaches about 3.75 g, or about 16 g a day on the larger tablets. That last figure passes the 12 g benchmark outright.

This matters more in India than in Europe. Babu and colleagues (Am J Clin Nutr 2010;91:140–146) found an abnormal lactose breath test in 78.9% of southern Indians and 57.1% of northern Indians. Lactase non-persistence genotypes ran to 86.8% and 67.5%. Tandon and colleagues (1981) found 66.6% in South India and 27.4% in New Delhi. The two disagree on the northern figure, both used Delhi as their northern centre, and neither measured Kanpur. Either way, it is not rare here.

Ordinary lactose intolerance means loose stools or wind. The hard line is elsewhere. Congenital lactase deficiency, galactosaemia and glucose-galactose intolerance are a real contraindication.

If you have diabetes

The daily sugar load at a normal dose is small — about 0.94 g on small tablets, which is under four calories, or about 4.0 g on 250 mg tablets. A common diabetes warning threshold is 5 g of sugar per oral dose, and a normal biochemic dose is well under it either way.

Read the excipient line, not the marketing. The same remedy is filed on lactose and on 98.1% icing sugar, so "biochemic" tells you nothing about the base. Count tablets across every bottle you take.

Four things sold about tissue salts that are not true

"Ferrum Phos 6X treats anaemia and raises haemoglobin." Do the sum. Sixteen 60 mg tablets a day deliver about 960 nanograms of the iron compound. Even if all of it were pure elemental iron, that is 0.96 micrograms against an adult daily need near 18 mg. About one eighteen-thousandth of a day's iron. One ordinary meal supplies far more. If you think you are anaemic, get a haemoglobin test.

"Tissue salts top up the minerals your cells are short of." The same arithmetic sinks this for calcium, magnesium and potassium. The dose is too small by around five orders of magnitude to mean anything nutritionally. Schuessler's own theory is what fails here.

"Higher potency means stronger, so use 200X for something serious." A 200X tablet holds less of the mineral than a 6X, not more. Past roughly 24X it holds none.

"Biochemic medicines have no side effects and no drug interactions." The label itself warns about allergic reaction to any ingredient, and "no interactions" has never been tested. Absence of study is not proof of safety.

Bio-combinations 1 to 28

A bio-combination is several of the twelve salts pressed into one tablet and sold under a disease name. Indian makers number them 1 to 28, mostly at 3X with some 6X.

Schuessler did not make them. Manufacturers assembled them later. He chose one salt at a time, matched to the person. A fixed mixture handed to everyone with the same diagnosis is the opposite of his method.

No trial evidence exists. We searched Europe PMC, the biomedical literature database, on 26 August 2026 for "bio-combination" AND homoeopathy. It returned zero records.

That matters most for the ones named after serious illness. No. 7 is sold for diabetes and No. 2 for asthma — exactly the long-term conditions the science reviews say homeopathy should not be used for.

What the evidence actually shows

There is no reliable clinical-trial evidence that homeopathy is effective for any condition, and that includes the tissue salts.

We searched Europe PMC on 26 August 2026 for "Schuessler salts" OR "Schussler salts" OR "tissue salts" OR "biochemic remedies". It returned 46 records. Not one is a randomised controlled trial of the salts. You can rerun that search yourself.

The major independent reviews all land in the same place. There is little evidence supporting homeopathy as an effective treatment for any specific health condition, and no known disease for which there is reproducible evidence that it works beyond placebo. The largest of those reviews assessed 57 systematic reviews covering 176 studies and found no condition with reliable evidence, adding that homeopathy should not be used for conditions that are chronic, serious or could become serious.

Our position at WeClinic. We prescribe on classical indications and clinical experience, alongside conventional care and never instead of it. We do not promise cures.

When to stop and see a doctor

Stop self-treating and get medical assessment if any of these apply.

  • Fever above 39°C, or fever lasting more than a few days
  • Chest pain, or breathlessness at rest
  • Blood in stool, urine or vomit
  • A lump that is growing, hard or fixed
  • Weight loss you cannot explain
  • A wound or ulcer that will not heal
  • Suspected anaemia — get a haemoglobin test, not a Ferrum Phos bottle
  • Any worrying symptom in a baby

Homeopathy must never delay a diagnosis.

Talk to a homeopath before you buy your next bottle

If you are taking biochemic tablets and nobody has explained them, a consultation is worth more than another bottle.

Call or WhatsApp +91 7905136461, or book an online consultation. We consult by video and phone across India and deliver medicines to your door. Packages run from about Rs 1,600 to Rs 5,000 by condition, and you are told the price first.

Our head clinic is at 3/84, F Block, Panki, Kanpur, open 10:00 AM to 9:00 PM daily, closed Monday. See our doctors, or read how to pick the best homeopathic doctor in Kanpur. Bring your bottle — we need the Latin name on the label.

Frequently Asked Questions

Does Calcarea Fluorica 6X have any side effects?
The mineral is not the issue. On a filed label, a 6X tablet holds around 60 nanograms of the mineral in a base that is 97.7% milk sugar. The realistic side effect comes from that base: wind, bloating or loose stools in someone lactose intolerant taking many tablets a day. Labels also warn against use if you have ever reacted allergically to any ingredient. Fluorosis is not a realistic worry at this dose.
What is the difference between Calcarea Fluorica 6X and 12X?
6X is one part in a million. 12X is one part in a trillion, so it holds a million times less mineral, not more. The reason Calc Fluor is sold at 12X is historical. Schuessler wrote that he used the sixth trituration generally, but gave Ferrum phos, Silicea and Calcarea fluor in the twelfth. No trial has ever compared the two for any salt.
Is Calcarea Fluorica 200X stronger than 6X?
No. On the X scale a bigger number means more dilute. The Avogadro limit sits around 24X, and past that point no molecule of the original mineral remains. A 200X tablet contains none of the mineral at all. So the only ingredient present in any real quantity is the sugar base, and that is the only thing a safety question at 200X can be about.
Does Ferrum Phosphoricum 6X increase haemoglobin or cure anaemia?
No, and the arithmetic is not close. Sixteen 60 mg tablets in a day deliver about 960 nanograms of the iron compound. Even if every bit of that were pure elemental iron, it is 0.96 micrograms against an adult daily need near 18 mg — roughly one eighteen-thousandth of a day's iron. One ordinary meal gives far more. Anaemia needs a blood test and proper treatment.
How many biochemic tablets should I take at one time?
Sources differ, so check your own pack. One filed product label says 1 to 4 tablets, one to four times daily for ages 12 and over. Indian boxes and sellers commonly say 4 tablets four times daily. Boericke and Dewey in 1899 said a pea-sized powder every hour or two in acute illness and 3 or 4 times daily in chronic. We prescribe inside that range, usually about 4 tablets three to four times a day for an adult.
Can I take two or three biochemic medicines together?
Classical practice allows it, and that is what a bio-combination tablet is. The catch is the sugar, not the mineral. Four products at once means 64 tablets a day, which is roughly 3.75 g of milk sugar on small tablets or about 16 g on 250 mg German-style tablets. The effect does not multiply, the sugar does. Pick the salt that matches your symptoms instead of stacking bottles.
Do biochemic tablets contain lactose, and what if I am lactose intolerant?
Most do, and lactose is usually about 98% of the tablet by weight. On a 60 mg tablet with 58.6 mg of lactose, a 4-tablet dose is 234 mg and a full day is about 0.94 g. That is under the 400 mg per-dose labelling threshold and well under the 12 g figure most lactose-intolerant people tolerate. Larger 250 mg tablets cross it. Tell your prescriber, and read the ingredient line, because some packs use sucrose instead.
Are biochemic tablets safe for diabetics?
The sugar load at a normal dose is small — about 0.94 g a day on 60 mg tablets, which is under four calories, or about 4.0 g a day on 250 mg tablets. A common diabetes warning threshold is 5 g of sugar per dose, and a normal biochemic dose sits well below it. Read the excipient line anyway, since the same remedy is sold on both a lactose and a sucrose base, and count tablets across every bottle you take.
Why does my box say Calcarea Sulphurica is number 3 when other lists say it is 12?
Because two numbering systems are in use. In Schuessler's classical German order, Calcarea sulphurica is number 12 — it was the last salt he added, and the one he later removed from his own list. Many Indian makers instead number the twelve near-alphabetically by Latin name, which puts it at 3 and moves Silicea to 12. Ignore the number on the box and read the Latin name.
Can children and babies take biochemic tablets?
Filed labels say children under 12 should take them only under a practitioner's direction, and one label says to consult a doctor below age 3. For a small child, dissolve the tablet in water rather than giving it whole. There is one absolute contraindication that matters most in babies: lactose-containing medicines must not be given in congenital lactase deficiency, galactosaemia or glucose-galactose intolerance.
Is it safe to take biochemic tablets every day for months?
Biochemic tablets are conventionally taken daily in courses, and the mineral is present in nanogram amounts, so mineral toxicity is not a realistic concern. The practical limit is the sugar base and the risk of delay. Open-ended daily use without review is not sensible. Agree a review date with your prescriber, and if nothing has changed by then, that is your answer rather than a reason to continue.
Is biochemic medicine the same thing as homeopathy?
No, and Schuessler said so himself. He rejected Hahnemann's principle of similars, drug provings, the vital force and potentisation, and called his system biochemistry. Boericke and Dewey recorded in 1899 that he "denies… all connection with Homoeopathy". The tablets are made by homeopathic pharmacies and sold in homeopathy shops, which is why almost everyone files them together, but the founder drew a clear line between the two.
Can I take biochemic tablets along with my blood pressure or thyroid medicine?
Never stop or change a prescribed medicine to take a tissue salt. No interaction studies exist for these tablets, so "no interactions" is untested rather than proven. What is known is the sugar base, which matters if you are managing diabetes or are lactose intolerant. Tell both your doctor and your homeopath what you are taking, and keep the tissue salt about half an hour clear of food.
Does Natrum Muriaticum 6X raise blood pressure or cause water retention?
No. Nat Mur is common salt at 6X, which is one part in a million. On a 60 mg tablet that is about 60 nanograms of salt, and even a full day's dosing stays in the microgram range. A single pinch of table salt in your food supplies many thousands of times more. The sugar base is the only ingredient in the tablet present in any meaningful quantity.
How long do biochemic tablets take to work?
There is no reliable timeline, because no trial has measured one. Course lengths of weeks to a few months are quoted in practice, but that is convention passed between practitioners rather than evidence. The useful step is to fix a review date when you start. If your symptoms have not shifted by then, treat that as information and get reassessed rather than buying another bottle.
What happens if I swallow too many biochemic tablets by mistake?
A mineral overdose is not realistic, because even a whole bottle holds only micrograms of the mineral. What you have actually swallowed is a few grams of milk sugar, which may cause wind, bloating or loose stools if you are lactose intolerant. That usually settles on its own. If a small child has swallowed a large quantity, or if symptoms worry you at all, ring your doctor.

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