Thuja occidentalis
Made from arbor vitae — the eternal cedar of eastern North America, whose thujone chemistry flavours absinthe and the classical remedy of oily skin and fixed ideas.
The whole picture, in one breath
Think of an oily, greasy constitution — skin that shines and sweats, eruptions like fig-warts, sweat that smells sweetish and fetid, and a mind carrying a fixed strange idea: something alive moving inside the body. Greasy skin, figwarts, the living-thing sensation: that is Thuja.
The substance, in plain words
Arbor vitae is the columnar cedar of North American swamps, its foliage rich in thujone — the fragrant, neurotoxic monoterpene that flavours absinthe. The proving gave the oily-skin, figwart and fixed-idea portrait; the chemistry's reputation for nervous excitation travelled with it.
The traditional picture Classical sources
The inner state
- Fixed idea of something inside. The keynote: a fixed sensation as of a living thing — a ball, an animal — moving within the body.
- Emotional sensitivity. Music causes weeping; ailments from fright and from the effects of old shocks.
- Talkative obstinacy. Rushes from subject to subject; feels singled out and misunderstood.
The body
- Oily greasy skin. The keynote: skin greasy, shiny, with enlarged pores; hair oily; sweetish fetid sweat.
- Figwarts. Warty, caulifower-like eruptions, especially about the anus and genitals; the books' wart-and-fig remedy.
- Sweat on uncovered parts. Profuse sweat where uncovered, none where covered — a quoted confirmatory sign.
- Left-sidedness. Complaints begin on the left; left ovary and left chest.
- Urinary dribbling. Weak, split, forked stream; dribbling after urination, worse at night.
- Worse after suppressed discharges The old books associate it with ailments after suppressed discharges and skin eruptions.
Modalities (worse and better factors)
| Worse from ⬇ | Better from ⬇ |
|---|---|
| damp and cold damp weather; damp and cold air; at night; left side. | walking about; open air; motion, warmth |
Where it acts (organ affinities)
Skin (oily, figwarts), urinary and genital organs, glands (ovaries left), mind and fixed ideas.
Where the classical picture comes from
The cedar's thujone chemistry irritated the skin and stirred the mind in proving; clinically Thuja attached to the oily, wart-marked constitutions and — in the doctrine of the era — to ailments from suppressed gonorrhoea and vaccination.
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.
Thujone is genuine, if notorious, pharmacology: the absinthe molecule, a GABA-blocking convulsant studied for its neurotoxicity, and a natural pesticide in the cedar's own defence. Cedar oil chemistry is real and active — one of the library's clearer poison-chemistry portraits.
Look-alikes (how the classical authors told it apart)
| Remedy | Looks similar because… | Tells it apart because… |
|---|---|---|
| Staphysagria | Warts, suppressed anger | Staphysagria's warts come with swallowed indignation; Thuja's with oiliness and the living-thing idea. |
| Medorrhinum | Genital figwarts, suppression | Medorrhinum is hot, hurried and rheumatic; Thuja oily, greasy and fig-warty. |
| Sulphur | Skin, heat | Sulphur is hot, burning and dry; Thuja is greasy and damp. |
| Anacardium orientale | Fixed ideas, strange sensations | Anacardium's fixed ideas are hoops and two wills; Thuja's is the living thing within. |