Tier 2 RemedyBy Marco RuggeriOctober 2, 2026

Magnesia Muriatica — Homeopathic Remedy Profile

Magnesia muriatica is the dynamic preparation of magnesium chloride, the salt of seawater and inland mineral springs. It entered the materia medica through Hahnemann's Chronic Diseases and stands close to Natrum muriaticum in its relation to the sea. Its clinical field is the liver, the female pelvis and the rectum, threaded through by a bilious and aversive temperament. Practitioners prescribe it from 30C upward, most commonly 30C and 200C.

At a Glance

Common NameMagnesium chloride
Abbreviationmag-m.
KingdomMineral
FamilyMagnesium salt (magnesium chloride)
Primary AffinityLiver, rectum, female reproductive organs, heart
Typical Potencies30C, 200C

Source and Preparation

Guernsey noted that magnesium chloride is found in almost every medicinal mineral spring and in seawater. The crude salt is intensely bitter and decomposes with heat, which is why the pharmacy prefers trituration and solution over dry storage. The remedy first appears as such in Hahnemann's Chronic Diseases; it has no allopathic textbook history, in contrast to its cousins Magnesia carbonica and Magnesia sulphurica.

The distinction between the crude mineral and the dynamic preparation matters here. Magnesium chloride in solution, at drinkable concentrations, is a laxative and, in higher amounts, a cause of loose stools and cramping; that pharmacology belongs to Ø and low decimals in the drainage register. At 30C and above no chloride ion remains, and what acts is the dynamic preparation, prescribed on the totality of the case. Reports of "magnesium chloride" as a folk remedy for constipation or fatigue belong to the crude register and to a different clinical logic; the self-expressions of the organism that call for Magnesia muriatica in classical prescribing are drawn from the provings and from a century of restored cases.

The Essence of Magnesia Muriatica

A patient who needs Magnesia muriatica is bilious in the old clinical sense. Sluggish in the morning, sore across the liver, bitter in the mouth, drawn thin by a slow poisoning that is not quite an illness and not quite health. They drag themselves around as though hung over, although they have taken no drink. Where Gelsemium is heavy and dull from the nerves, and Rhus tox is stiff and better from motion because the joints are the seat, Magnesia muriatica is sluggish and better from motion because the seat is the liver, not the joints.

Temperament follows suit. The patient dislikes confrontations, will avoid an argument even when in the right, and if they must express displeasure will do so obliquely, to a third party. Suffering when they see other people argue is a fine keynote. Underneath the passivity runs an anxious restlessness, worse in the evening, worse when the eyes close for sleep, a nervous sensitivity that Hahnemann already noted across the wider magnesium picture.

Clinical Portrait

Mind and Temperament

Aversion to conversation and preference for solitude appear early. Peevishness alternates with sadness. Homesickness and nostalgia are named symptoms, and the forsaken feeling is real; Clarke lists it, and it carries weight in women who have long borne unspoken domestic strain. Weeping is common, particularly during a liver flare. Fear runs to animals, to spiders, and above all to robbers. The dream of robbers in the house is one of the remedy's most idiosyncratic images: the patient wakes convinced the intruders are still there and cannot be reasoned out of it until the house is searched. A practitioner who hears that dream twice in the same case, in a bilious constitution, has a strong pointer.

Better from mental exertion is a paradox worth holding. In a picture otherwise governed by sluggishness, absorbing work lifts the bilious apathy where rest deepens it. Aversion to work sits alongside this, and the two are not really in contradiction: the patient dreads the effort of beginning, then feels lighter once engaged.

Head and Sensorium

The Magnesia muriatica headache bursts. It is worse for motion in the acute moment and worse in the open air, and yet — the seeming contradiction is characteristic — the relief comes from hard external pressure and from wrapping the head warmly. Murphy notes the comparison with Silica and Strontium carbonicum. Squeezing pain in both temples, worse on lying down in the evening, is a common phrasing. A curious variant: the sensation as if boiling water were on the side of the head lain on. Sweating of the head, which Silica also has, is here bound to the biliousness rather than to a scrofulous background.

Loss of taste and loss of smell after a cold or influenza is the clinical use for which Clarke found Magnesia muriatica most reliable, restoring both senses when other remedies had left the residual anosmia untouched. Sensitivity to noise runs through the picture and worsens with the headache.

Liver and Digestion

The liver is the pivot. Enlargement, tenderness on pressure, and a sluggish sense of weight; jaundice; cirrhosis with the sluggish feeling Murphy names; hepatitis with total exhaustion and, later, the chronic fatigue that does not lift for months after the acute attack. These are Murphy's comment-level indications and the bedrock of the modern use of this remedy.

Pressing pain in the liver is worse lying on the right side, and the patient sleeps on the left to avoid lying on the liver. The tongue is yellow, broad, scalloped by the teeth; the mouth is bitter on waking. Pain radiates from the liver to the spine or to the epigastrium. Liver affections here have a marked tendency to be complicated by hemorrhage elsewhere: the metrorrhagia and the profuse dark menses belong to this same picture, not to a separate uterine disease.

Appetite is capricious. There is a hunger, but the patient knows not for what, one of the finer descriptive phrases in the materia medica, which translates in practice as an inclination to nibble, a craving for sweets and dainty foods, and an aversion to what would ordinarily nourish. Lemons help. Salt aggravates, sometimes to the point of red lips and cracked corners of the mouth. Milk cannot be digested and provokes pain in the stomach; in children the milk passes undigested, and this appears especially during dentition. Fatty and fried food, meat, and heavy dishes make everything worse; a light vegetable and fruit diet lets the patient breathe.

Belching gives partial relief. Nausea and faintness after dinner ease with a good eructation; hiccough during and after dinner is severe enough to provoke vomiting. Belchings are described as tasting of rotten eggs or of onions, and the continuous rising of white froth into the mouth is a distinctive symptom.

The Female Sphere

Magnesia muriatica has been called, since Hahnemann, a remedy of women who have lived for years with indigestion and biliousness laid alongside uterine trouble. The two spheres are not separate. When the liver is congested, the menses turn dark and clot; when the uterus is disturbed, the digestion suffers.

The menstrual flow is characteristic: profuse, dark, lumpy like pitch, and, the small detail that fixes the picture, more copious when the patient is sitting than when she is walking. Cramps accompany the flow and reach into the thighs. Dysmenorrhea is better from pressure on the back or from lying on a hard pillow behind the small of the back, and worse when the patient tries to lie soft. Bearing-down in the right ovarian region and tenderness of the ovary are additional pointers.

Leucorrhea comes in gushes, particularly after abdominal colic, and reappears after every stool. Metrorrhagia is worse at night, a firm keynote, and Magnesia muriatica antidotes the metrorrhagia caused by Mercurius, which is not a small piece of information for the practitioner who has just given Mercurius in a case that has reacted badly.

Rectum and Stool

Constipation is nearly universal in the chronic case. Absence of desire is combined with a stool that will not form. Stools are knotty like sheep dung, gray in color, and, the distinguishing detail, they crumble at the verge of the anus. The patient strains, the stool appears, and it breaks apart at the very threshold. Painful smarting hemorrhoids and burning after stool are the standard accompaniments. Infants during dentition are held up by this constipation, and the differential with Nux vomica and Alumina turns on the milk intolerance and the biliousness. Tapeworms are a lesser-known indication drawn from the older materia medica.

Diarrhea appears after milk. Chilliness accompanies loose stool in the morning.

Cardiovascular

Palpitations belong to the modality picture more than to any structural disorder. They are worse sitting still, worse lying on the left side, and better on moving about. The pulse quickens with ebullitions while sitting quietly. The remedy is one of the classical bridges between heart and liver in the older materia medica: heart disorders with liver enlargement, in a bilious constitution, with palpitations that lift as the person walks around the room.

Sleep and Fatigue

Sleep is unrefreshing. The patient closes the eyes and the anxiety and restlessness of the body come in at once, before sleep has arrived. Waking is worst: miserable, irritable, bitter-mouthed, sluggish, as though the illness were still in progress. Chronic fatigue after hepatitis, viral infections that leave a toxic sluggishness in their wake, the mononucleosis convalescence that will not close: these are among the strongest modern uses. Better as the day goes on. Better with motion. Never rested by the night.

Modalities

Worse:

  • Sea bathing, sea air, and everything at the seaside
  • Salt and salty foods; milk; heavy, fried and fatty foods; meat
  • Lying on the right side (liver); lying on the left side (heart)
  • Touch, noise, immediate aftermath of eating
  • Night; morning on waking

Better:

  • Cool, open air, except the headache
  • Hard pressure
  • Lying bent; hanging down the affected part
  • Gentle motion; moving about (palpitations)
  • Belching (nausea, faintness)
  • Wrapping the head warmly (headache); lemons
  • Pressure on the back or a hard pillow (menses)
  • A light diet of vegetables and fruit

Sea bathing is a keynote sufficient to prescribe on alone in the right constitution: a patient whose chronic complaints, constipation, biliousness, weakness, appear or worsen as soon as they go to the coast, and who reports excessive weakness after a bath in the sea.

Relationships

Antidoted by: Chamomilla, Camphora, Arsenicum album, Nux vomica.

It antidotes: Mercurius, particularly in metrorrhagia produced or aggravated by Mercurius.

Compare: Chelidonium and Ptelea for congestive liver enlargement. Chelidonium's pain is under the right scapula and is worse lying on the left, while Ptelea is better lying on the right, the opposite of Magnesia muriatica. Magnesia carbonica shares much of the nervous and hysterical field. Natrum muriaticum shares the sea and salt aggravation and the grief background but is more grief-defined and less liver-defined. Pulsatilla and Sepia share the female sphere and the digestive weakness; Sepia's bearing-down is uterine, Magnesia muriatica's is ovarian. Ammonium muriaticum and Ignatia share globus hystericus. For hysteria proper, compare Moschus, Asafoetida, Valeriana and Castoreum equi. In enlarged liver of children, compare Calcarea arsenicosa. For foot-sweat and head-sweat together, compare Silica, whose sweat is offensive and whose constitution is scrofulous rather than bilious.

Compatible: Belladonna, Sulphur, Natrum muriaticum, Pulsatilla, Sepia.

Clinical Uses

Chronic Liver Disorders

Hepatitis with the aching, malaise, and wiped-out feeling of a viral illness that will not close; cirrhosis with the same congestive sluggishness; the long convalescence after infectious hepatitis in which chronic fatigue and irritability persist for many months. The picture selects itself when the mornings are the worst part of the day, the tongue is yellow and scalloped, and the patient dislikes salt and cannot digest fat. 30C daily for several weeks, moving to 200C in the more chronic and constitutional cases, is the historical range. Compare Chelidonium if the pain is fixed under the right scapula, and Nux vomica if the biliousness comes from suppressed anger and excess rather than long weakness. For the broader field of digestive support, Magnesia muriatica stands alongside Chelidonium, Lycopodium and Phosphorus.

Constipation with Knotty, Crumbling Stools

The characteristic stool, knotty, gray, breaking apart at the anus, belongs to Magnesia muriatica more distinctively than to any other polychrest. It appears in infants held up during dentition, in women through the middle years, and in men with disordered livers. The prescription is often 30C at bedtime for a week to ten days, alongside constitutional attention. Differentiate against Alumina, which has a dry rectum with no urge and stool passed with great effort; against Bryonia, whose stool is dry and hard with thirst for large drinks; and against Nux vomica, whose urging is ineffectual and constant.

Dysmenorrhea with Dark, Clotted Menses

Menses profuse and pitch-dark, worse sitting than walking, with cramps that reach the thighs and are better on hard pressure to the back. Combined with the bilious constitution and the leucorrhea after abdominal colic, the picture is compact. 30C two or three times a day for the days of flow; 200C intercurrently in longer treatment. For the wider dysmenorrhea field, compare Magnesia phosphorica, which is relieved by heat and pressure but without the biliousness, and Sepia, whose bearing-down is joined by indifference to family and by chilliness through the pelvis.

Loss of Taste and Smell After Influenza

Clarke frequently restored the loss of taste and smell after influenza with Magnesia muriatica when the anosmia had outlasted the acute illness. 30C once daily for a week, in a patient with the bilious background, is the usual first prescription; 200C if the loss is deeper and the case is otherwise stagnant.

Chronic Fatigue After Viral Illness

Modern practice draws on Murphy's linking of Magnesia muriatica with post-hepatitis and post-mononucleosis fatigue: aching, malaise, sluggish and toxic feeling, better from motion and from mental engagement, worse in the morning, worse on rest. The differential runs with Rhus tox, Gelsemium and Kali phosphoricum, and the deciding feature is the liver — the bitter mouth, the yellow tongue, the intolerance of fat and salt.

Gallstones and Biliary Colic

The source describes cramp in the gallbladder that is better by eating, and pressing pain in the hepatic region worse lying on the right side. Where the biliary field is dominant, the full differentiation is set out on the gallstones page; Magnesia muriatica sits between Chelidonium, Lycopodium and Nux vomica in that setting.

Alopecia Areata in Bilious Constitutions

Magnesia muriatica is not a first-line alopecia remedy, but in patients whose hair loss develops on the ground of the bilious, unrefreshed-morning constitution described above, it has a place. The full differentiation against the leading alopecia remedies is on the alopecia areata page.

A Restored Case

R. M. Skinner reported the case of a farmer who had been treated allopathically for chills for three months. The chills were checked, but the man did not feel well. His spleen was very large and sensitive and felt heavy when he walked or rode. He had gone three or four days without a stool. The abdomen was distended and hard, especially over the ileo-cecal region. There was coldness on the left side and, in the farmer's own phrase, a crawling feeling like a cold snake. He described a beating in the umbilical region as if his heart beat there.

Skinner gave him one dose of Magnesia muriatica 200C on the tongue. At eight in the evening the bowels began to act and did not stop, except for a single hour, until three in the morning. The next morning the farmer complained that the medicine had almost killed him. He looked thin and drawn. No further remedy was given. Ten days later he had no complaint; the spleen was normal in size and no longer tender.

The case is a compact image of the self-expression of the organism that this remedy meets. A checked disease from which fresh weakness arose. A single dose. A strong reaction. An intelligent settling once the self-governing principle was freed to react.

Frequently Asked Questions

Is Magnesia muriatica the same as taking a magnesium chloride supplement for magnesium deficiency? No. Magnesium chloride tablets and drinkable solutions are prescribed for their crude mineral content and their laxative effect. Magnesia muriatica in classical prescribing is used from 30C and above, where no molecule of the salt remains and no nutritional or laxative action is possible. The remedy is chosen on the totality of the case: the bilious morning, the knotty crumbling stool, the dark clotted menses, the aversion to confrontations. It is not chosen on a mineral level in the blood. The two prescribing registers should not be confused.

Which potency should a home prescriber use? For acute uses such as post-influenza loss of smell or a bilious constipation of recent origin, 30C once or twice a day for up to a week is the historical range. Chronic and constitutional prescribing calls for 200C and is best conducted with a practitioner, since the depth of the picture, cirrhosis, chronic fatigue after hepatitis, long-standing uterine and digestive complaint, is not managed by potency alone.

How does Magnesia muriatica differ from Natrum muriaticum, given both are muriates? Both share the sea and salt aggravation, and both carry a background of grief. Natrum muriaticum is grief-defined: the withheld weeping, the reserved and independent temperament, the mapped emotional history. Magnesia muriatica is liver-defined: the yellow tongue, the sluggish morning, the intolerance of fat, the palpitations that lift on moving about. Where a patient carries both pictures, the presence of a chronic liver history and the bilious morning irritability point to Magnesia muriatica.

When should another remedy be considered first? When the mornings are the best part of the day rather than the worst; when the tongue is clean; when heat aggravates instead of pressure relieving; when there is no bilious history behind the acute complaint. The remedy is prescribed alongside standard care where a chronic liver disease is under medical management; the practitioner will not advise reducing or stopping conventional treatment.

References

Hahnemann S. The Chronic Diseases: Their Peculiar Nature and Their Homoeopathic Cure. Entry Magnesia muriatica.

Boericke W. Pocket Manual of Homoeopathic Materia Medica with Repertory. Entry Magnesia muriatica.

Clarke JH. A Dictionary of Practical Materia Medica. Entry Magnesia muriatica, including the Skinner case report and Clarke's clinical note on restored taste and smell after influenza.

Murphy R. Nature's Materia Medica. Entry Magnesia muriatica.

Phatak SR. Materia Medica of Homoeopathic Medicines. Entry Magnesia muriatica.

Teste A. The Homoeopathic Materia Medica Arranged Systematically and Practically. Ferrum group, entry Magnesia muriatica; cited in Clarke.

Guernsey HN. Clinical notes on Magnesia muriatica, on its distribution in seawater and mineral springs; cited in Clarke.