Kali nitricum
Made from saltpetre — the nitrate of gunpowder and preserving, whose nitrate chemistry became modern cardiology's most famous drug family.
The whole picture, in one breath
Think of asthma that owns the small hours: the breathlessness and suffocative cough that wake the sufferer between three and four in the morning, forcing them upright over the bedside, with a sense of constriction across the chest, and relief only as dawn comes. The 3 a.m. asthma: that is Kali nitricum.
The substance, in plain words
Potassium nitrate — saltpetre — is the nitrate of gunpowder, of bacon-curing, of the old 'nitre' febrifuge. Its nitrate chemistry is the direct ancestor of nitroglycerin and the whole nitrate family — modern medicine's first and most famous angina drugs.
The traditional picture Classical sources
The inner state
- Anxiety of the breathless. Fear, restlessness and dread in the small hours when the chest tightens.
- Irritability. Cross, worse in the morning after the broken night.
- Despondency. Gloom in the chronic, season-returning asthma.
The body
- The 3–4 a.m. aggravation. The keynote: asthma and cough wake the sufferer between three and four in the morning; must sit up, lean over the bedside.
- Constriction across the chest. A tight, suffocative band about the chest with the paroxysm.
- Better as dawn comes. The attack loosens toward morning — the clockwork the books record.
- Worse cold and damp. Wet weather and draughts set the wheezing off.
- Cough with difficult expectoration. The cough is hard, the mucus scanty and tough.
- Worse lying. Recumbency brings the spasm; the sufferer fears the bed.
Modalities (worse and better factors)
| Worse from ⬇ | Better from ⬇ |
|---|---|
| 3–4 a.m.; cold damp weather; lying down; draughts. | sitting up leaning forward; the approach of dawn; warmth. |
Where it acts (organ affinities)
Bronchi and lungs (asthma), heart and chest, mucous membranes, night rhythm.
Where the classical picture comes from
The old 'nitre' febrifuge and the proving gave the remedy its small-hours asthma portrait; clinically it attached to the clockwork asthmatic whose 3 a.m. the whole household knew.
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.
Nitrate chemistry's real legacy is cardiology itself: nitroglycerin — an organic nitrate cousin of this very salt — has relieved angina since 1878 and remains a first-line heart drug, its mechanism (nitric oxide) winning a Nobel Prize. The asthma it portrayed is now managed with inhalers that work in seconds; the nitrate family it belongs to works in minutes.
Look-alikes (how the classical authors told it apart)
| Remedy | Looks similar because… | Tells it apart because… |
|---|---|---|
| Arsenicum album | Midnight anxiety, asthma | Arsenicum is chilly, fearful, sipping at midnight; Kali-nit is the 3 a.m. asthmatic leaning over the bed. |
| Kali carbonicum | Early morning asthma | Kali-carb is 2–4 a.m. with the stitching back; Kali-nit 3–4 a.m. with the constriction band. |
| Spongia tosta | Constriction, croupy cough | Spongia is the dry laryngeal saw before midnight; Kali-nit the small-hours asthmatic. |
| Cactus grandiflorus | Chest constriction | Cactus is the iron band about the heart with arm pain; Kali-nit the 3 a.m. asthma band. |