Magnesia phosphorica

Made from magnesium phosphate — the cramp salt of the biochemic shelf, and the classical remedy of radiating cramps better for heat and pressure.

SourceMineral sourceMineral kingdom

The whole picture, in one breath

Think of a cramp with a compass: pains that radiate and shoot along the nerves, griping and spasmodic, doubling the sufferer — yet melting away under warmth and firm pressure. The cramp better for heat and pressure: that is Magnesia phosphorica.

The substance, in plain words

Magnesium phosphate is the biochemic 'anti-cramp salt' — and the chemistry it claims is real: magnesium is the element that gates muscle contraction, given intravenously to stop eclamptic seizures and cardiac torsades to this day. The remedy is the cramp portrait of that physiology.

The traditional picture Classical sources

The inner state

The body

Modalities (worse and better factors)

Worse from ⬇Better from ⬇
cold air and drafts; touch; night; the least motion of the part.warmth; firm pressure; bending double; hot drinks.

Where it acts (organ affinities)

Muscles and nerves (cramp), female organs (dysmenorrhoea), digestion (colic), general spasm.

Where the classical picture comes from

The biochemic school gave Mag-phos its frame — the cramp salt; the proving added the warmth-and-pressure signature, and the remedy became the library's universal first thought for cramping, radiating, heat-better pain.

The substance in real medicine Pharmacology

What this section is: the pharmacology and toxicology of the source substance. It is not clinical evidence that a homeopathic preparation of it treats any condition. What controlled trials do and do not show is set out on the Evidence page.

Magnesium's real medicine is unimpeachable: IV magnesium sulfate stops eclamptic seizures in pregnant women, terminates the deadly arrhythmia torsades de pointes, and is among the most-used emergency electrolytes. The element that relaxes the cramping cell is the same the salt claims as parent — physiology's own anti-cramp drug.

Look-alikes (how the classical authors told it apart)

RemedyLooks similar because…Tells it apart because…
Viburnum opulusSpasmodic dysmenorrhoeaViburnum is uterine spasm better for the flow; Mag-phos is any cramp better for heat and pressure.
Cuprum metallicumCramps and spasmsCuprum is the violent cramp with blue face; Mag-phos the radiating one warmth relieves.
ColocynthisCramping colicColocynthis is the anger-born colic bending double; Mag-phos the right-sided radiating cramp.
CausticumContracted tendonsCausticum is the slow contracture; Mag-phos the paroxysmal cramp.
Safety. Severe cramps with weakness, recurrent unexplained spasms, or cramps in pregnancy need medical assessment — some cramp-medicine is diagnosis.
Compiled by Dr. Sohil Momin, BHMS · Open Materia Medica