Acidum fluoricum
Made from hydrofluoric acid — the glass-etching acid whose fluoride chemistry serves and scars modern industry, and the classical remedy of destructive bone states.
The whole picture, in one breath
Think of a constitution hot and dissolving: varicose veins with old, hard ulcers that refuse to heal, bones that soften and decay, teeth that crumble, a craving for cold drinks and cold bathing, and — the signature — improvement from cold and worsening from heat, the reverse of the chilly remedies. Hot, dissolving, cold-loving: that is Fluoric acid.
The substance, in plain words
Hydrofluoric acid is the glass-etching, bone-seeking acid of industry — fluoride chemistry so avid for calcium that it dissolves bone and glass alike, a genuine industrial hazard with real occupational disease behind it. The proving gave the library's portrait of destructive, degenerating, heat-worse states.
The traditional picture Classical sources
The inner state
- Indifference to loved ones. A strange coolness toward family — the books note the acid's emotional etching.
- Anxiety about health. Worry over the crumbling teeth, the non-healing ulcers.
- Irritability. Cross, worse from heat and from being questioned.
The body
- Varicose ulcers old and hard. The keynote: chronic varicose ulcers, hardened edges, refusing to heal for years.
- Bone softening and decay. The acid's calcium-hunger in the portrait: bones that soften, necrose, crumble.
- Better for cold. Cold drinks, cold bathing, cold air — the decisive modality, heat aggravating everything.
- Craving for cold drinks. Iced water drunk in quantity — the acid's thirst.
- Teeth crumble. Enamel pits and breaks; the teeth decay at the gum-line.
- Worse heat and warmth. Warm rooms, warm food, the warm bath — all aggravate the hot, dissolving constitution.
Modalities (worse and better factors)
| Worse from ⬇ | Better from ⬇ |
|---|---|
| heat and warm rooms; warm food; exertion; the warmth of the bed. | cold drinks and cold bathing; open cool air; uncovering. |
Where it acts (organ affinities)
Bones (softening, decay), veins and varicose ulcers, teeth, skin.
Where the classical picture comes from
The acid's calcium-seeking destructiveness gave the proving its frame; the remedy attached to the varicose-ulcer, crumbling-tooth, cold-loving constitution of the old books — and its heat-worse modality stands unique among the major remedies.
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.
Hydrofluoric acid is one of industry's most dangerous chemicals: its burns penetrate deep, its fluoride binds calcium and stops the heart — a genuine emergency with a real treatment (calcium gluconate kept at every HF workplace). The acid that dissolves bone in the factory is the acid whose portrait dissolves it in the remedy — toxicology without translation.
Look-alikes (how the classical authors told it apart)
| Remedy | Looks similar because… | Tells it apart because… |
|---|---|---|
| Calcarea fluorica | Teeth, bone chemistry | Calc-fluor hardens and knots; Fluoric acid dissolves and softens — the two salts walk opposite roads. |
| Secale cornutum | Cold-better, degeneration | Secale is cold, dry and uncovered with dark bleeding; Fluoric acid is hot and dissolving with cold-craving. |
| Silicea | Bones, slow healing | Silicea heals slowly; Fluoric acid's ulcers are old and won't. |
| Carbo vegetabilis | Cold extremities, collapse | Carbo is air-hungry and cold; Fluoric acid is cold-craving and hot at core. |