Ammonium Causticum, Ammonia

Ammonium Causticum, Ammonia homeopathy medicine – drug proving symptoms from Encyclopedia of Pure Materia Medica by TF Allen, published in 1874. It has contributions from R Hughes, C Hering, C Dunham, and A Lippe….

Common name: Hartshorn spirits.


Chemical formula, NH3.

Preparation: Solution of the gas in water.


The patient, perfectly comprehending his condition, resigns himself to despair.

Remarkable timidity.

His intellect was clear.



Slight confusion in the head, with rumbling in the abdomen (in six minutes).

Slight confusion in the head, with pressure in the temples, ceasing almost entirely in ten minutes (in a quarter of an hour).

Sensation as if the brain protruded at the centre, forward, and on both sides, and the skull was quartered, but without pain and without confusion of the head.

The forehead, where the blood vessels are full of blood, feels hot to the touch.

Pressure in the frontal region, with feeling as if the head would split, but without pain, which lasts a few minutes (in seven minutes).

Slight pressure at the occiput, lasting ten minutes (in half an hour).


Eyes red, shining.

The eyes sunken; the pupil widely dilated.





Peculiar redness of skin over nose and frontal sinuses.


A watery fluid runs at intervals from the nasal cavities, and the air is completely excluded from them.


The face is altered.

The expression was anxious.

The whole expression of his face showed the greatest anguish.

Extremely pale face, expressive of the greatest suffering.

Face always very red during the febrile exacerbations.

His distorted features had red spots.

His lips were rather swollen.

Lower lip swollen to three times it normal size.

Small black coating on the middle of the lower lip.

The mucous membrane of the lips and nose was destroyed.


Teeth clenched.

The surface of the tongue is white.

The tongue appeared deprived of its epithelium; only on solitary places could some white membrane still be seen, and nearly the whole fauces showed the same state.

Curled pieces of white skin are detached from the tongue and throat, and those parts appear red.

The tongue, the palate, and the entire oesophagus, as far as visible, are whitish and partly covered with blisters.

Burning and scraping at the root of the tongue and posterior portion of the oesophagus (while swallowing the medicine).

Small black coating on the tip of the tongue.

The entire buccal cavity, the mouth, the tongue, and probably a great part of the oesophagus and stomach, are raw, denuded of epithelium.

The mucous membrane of the mouth, and all the visible parts of the throat, were dark-red, swollen, and tender; the epithelium was detached in different places.

The penetrating smell of Ammonia was still clearly perceptible in his breath, although he had taken so much vinegar.

From mouth and nose flowed a large quantity of bloody fluid.

Profuse bloody salivation.

Foaming from mouth.


Throat externally red, and the soft parts swollen.

Burning pain in throat.

Burning pain from the mouth to the region of the stomach.

Burning heat at the throat.

Burning pain at throat and stomach.

Lancinating and scraping sensation at the throat (immediately after taking the medicine).

Scraping at the throat (when swallowing the medicine).

Deep redness of the velum, its pillars, the tonsils, and the posterior wall of the pharynx.

The uvula is contracted and covered with white mucus.

The tonsils appear scarcely at all enlarged.

The posterior wall of the pharynx, and the epiglottis, were deeply reddened, and like the mouth, with most intense pain in the throat.

Dryness in oesophagus.

Great difficulty in swallowing.

Could scarcely swallow.

He swallowed with difficulty some vinegar and water, but it seemed to relieve him.

After two hours of great anxiety, the patient complained mostly of his throat, as swallowing was still nearly impossible.

TF Allen
Dr. Timothy Field Allen, M.D. ( 1837 - 1902)

Born in 1837in Westminster, Vermont. . He was an orthodox doctor who converted to homeopathy
Dr. Allen compiled the Encyclopedia of Pure Materia Medica over the course of 10 years.
In 1881 Allen published A Critical Revision of the Encyclopedia of Pure Materia Medica.