Last modified on February 6th, 2019

Sulphuric Acidum 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


Sulphuric acid, H2SO4.

Preparation: Dilutions with water.


Delirious shortly before death. For two nights, delirious and recognized no one. Uneasiness (after twelve hours). Nervous excitement. He was roused with difficulty, and when roused resisted fiercely, saying in a hoarse muffled voice, “Let me alone, let me die.” Excessively jocose. Exaltation of mind and disposition. Great distraction of mind; she often gave inappropriate answers. Hasty mood; nothing that she does can be finished quickly enough, though she makes unusual effort.

Constant moaning. Moaning very deeply (after half an hour).

Lachrymose without cause (first day). Very sad irritable mood.

Melancholy and weary of life. Dull gloomy mood, in the morning.

Despondent morose mood. Most excessive anxiety, and burning pain and heat in the stomach. Great anxiety, with restless tossing about. Extreme anxiety and nausea, followed by vomiting of mucus (immediately). Anxious, quarrelsome, averse to answering.

Diminution of the anxious oppressed mood and of the despondency with exaltation, and therefore (as curative action) a quiet refreshed condition. Great apprehension, from morning till evening (thirteenth day). Apprehensive and grieving, with inclination to weep (second day). Depressed. Was in a state of great fright. Very fearful, despondent, fretful. Very fearful; extremely mistrustful. Ill-humor, fretfulness. Ill-humor all day; she avoids speaking to every one. Extremely peevish, in the morning on waking. Very peevish, even during the day. It frets her to talk. Aversion to talking. Fretful, peevish, impatient, if his work is not done to suit. Sedate, earnest conditions of mind. So irritable and sick that she started violently at everything. Unconsciousness. Paroxysms of stupefaction.

(Stupor). (* Revised by Hughes. *) Inclination to coma.


Vertigo. Vertigo, in the afternoon, while sewing, as if she would fall from the chair. Vertigo, even to reeling; was obliged to lie down constantly, for as soon as she rose the vertigo reappeared. Vertigo in the house, which disappears in the open air. General Head. Dull pain in the head, as if full. Pressive dulness in the head. Dulness and heaviness of the head, in the morning. Sensation of heaviness and fullness in the head; she was obliged to hold it forward. Heaviness and pain in the head, as if the bran fell forward and came up again. Weakness in the head.

Headache. Pain as if the head would burst. Pain as if the head were shattered, in the morning after waking, and yet great sleepiness. Drawing headache, in the evening. Drawing headache, especially in the right side, towards the forehead. Drawing and tension in the head. Tearing in the whole head, day and night.- Stitches here and there in the head, when walking in the open air. Dull stitch deep in the brain, above the left frontal eminence, suddenly increasing, then diminishing, and at last suddenly disappearing. Forehead. Dulness and fullness in the forehead, the whole forenoon. Pain as from a blow, near the left frontal eminence, first in-creasing, then suddenly disappearing.

A feeling in the frontal region as if the brain loose and fell back and forth. Painful sensation of soreness, above the left frontal eminence, which is always more acute in isolated jerks.

Constriction in the forehead, at first increasing, then suddenly disappearing. Pressure, as from a blow, in the right side of the forehead, first increasing, then suddenly disappearing. Frequent pressive and burning headache in the forehead and eyes. Tearing and sticking in the right side of the forehead, relieved by pressure, in the evening. Sudden painful jerking above the left frontal eminence. A violent jerk from time to time beneath the left frontal eminence, suddenly disappearing. Painful tearing in the middle of the forehead, towards the left side. Acute pain beneath the right frontal eminence, as if the brain were loose and knocked against the skull, painful on shaking the head.

Sticking pain, now in the forehead, now in the occiput. Dull stitches in the forehead, now in the right, now in the left side, extending deep into the brain. Stitches, sudden, dull, and very sensitive, like thrusts, above the left frontal eminence, extending into the brain. Temples. Grumbling from time to time in the temporal bones. Pressing inward in both temples. Drawing in the left temple, rather external and in a small spot. Thrust in the right temple, as if a plug were sticking in and constantly pressed deeper. Single shooting-thrusting jerks in the right temple. A burning pain in the temples, as from a thrust or bruise, in wavelike intermissions. A painful tearing in the left temple, while sitting during breakfast. Tearing in the right temple, towards evening. Vertex and Parietals. Pressive pain in the vertex, while standing. Sudden confusion in the right side of the head, as from smoke, while sitting. Sensation of heaviness in the left side of the head. Sensation as if the left side of the head, before the ear, were screwed in. Stupefying throbbing pain in the right side of the head, on rising after stooping.

Occiput. Compressive pain in the sides of the occiput, relieved by even holding the hands towards the head without touching it. Pressure and sticking in the left side of the occiput. External Head. The hair becomes gray and falls out. Much eruption on the head, face, and nape of the neck. Small pimples on the forehead and side of the nose. External pain over the whole head, as from suppuration, also painful to touch. Violent itching on the head. Violent itching on the scalp.


Objective. Redness of the eyes, and constant lachrymation and photophobia. Eyes and face ghastly. Eyes protruding. The eyes fixed, and with the pupils slightly contracted, but not very sensitive to light (in two hours). Eyes sparkling. Eyes lusterless and watery. They immediately felt a severe burning sensation, especially in the eyes. On admission into the hospital, their eyes were much inflamed, the lids were swollen, and the right eye of the father looked dull and opaque. On the fourth day the conjunctiva of the right eye of the father acquired a jellylike consistence, and on the eighth day the cornea, which all along had been opaque, sloughed away, giving exit to the lens and a portion of the vitreous humor. For more than a week this eye continued inflamed, and it discharged large quantities of purulent matter. At the present time the eye is still suppurating and gradually wasting away. Eyes sunken and expressive of suffering (sixteenth day). Subjective. Sensation of a foreign body in the right outer canthus, in the morning when walking, disappearing in the house. Burning and lachrymation of the eyes, while reading in the commencing twilight. Frequent violent burning in the eyes (sixth day). Biting burning and lachrymation in the left eye, while reading during the day.

Frequent biting in the right eye (first day). Orbit. Tearing on the margin of the right orbit, extending towards the temples, as if under the skin. Pain as from a plug thrust in just above the left orbit, at first increasing, then suddenly disappearing. A dull thrust, from within outward, just above the margin of the right eyelid on every paroxysm of cough. Lids. Eyes agglutinated, in the morning. Twitching in the right inner canthus. The eyelids sink down and he cannot open them. Pressure in the outer canthus.

Sticking itching on the lower lid; he is obliged to rub it.

Lachrymation. Lachrymation. Ball. Burning pressure in the anterior portion of the left eyeball, in the open air; in the house the pain ceased, and there was pain only on looking intently, so that she was obliged to abstain from using the eyes.

Pupil. Eyes mostly closed, but pupils were small and piercing.

Pupils greatly dilated, with lusterless eyes. Pupils contracted and not obedient to the stimulus of light. Vision. Photophobia (fourth week). Dimness of vision, in the morning. Twitching sensation before the vision, with weakness.


Violent tickling in the concha. Tearing in front of the left ear and up into the temple. Tearing deep into the left ear, followed by crawling in it. Jerking in the right ear, preceded by the exit of agreeable warmth. Tearing and sticking in the right ear, rather external. Drawing from within outward in the right meatus. Hearing. Diminished hearing, as if a leaf were laid before the ears. Clear sounds of bells in the right ear.

Rhythmical roaring in the ears. Roaring in the left ear on opening the mouth, as from a waterfall, during dinner. Roaring in the ears, in the evening. Roaring in the ears, (fourth week).

Great roaring in the ears, lasting four hours.


Violent coryza, with sore eyes. Coryza with loss of smell (fourth and fifth days). Fluent coryza (fourth day). Much water runs from the nose, with stoppage of one nostril. Obstinate dry coryza. Violent dry catarrh; at times he could get no air through one or the other nostril. Bleeding of the nose, in the evening, while sitting and standing. Dark-brown froth issuing from the nostrils. Ineffectual inclination to sneeze. Fine stinging prickling in the right side of the nose, so that he was obliged to rub it. A vapor mounted through the nose, followed by incessant sneezing twenty times and then stoppage of the nose.


Incessant convulsions of the facial muscles; eyes sunken; clonic spasms of the upper extremities and dorsal muscles. Convulsions of the muscles of the face and of the lips. Face distorted, livid. Features distorted. Look unsteady. Expression of prostration and collapse (after two hours). Face hippocratic; face drawn and deathly pale. Face sunken (after four weeks). Face sunken, expressive of great anxiety; the patient frequently sprang from bed, and died in collapse, with an extremely odor from the mouth and involuntary discharges. Countenance expressive of great pain; look fixed; eyes sunken; pupils contracted; pupils pinched. Gangrenous look. Countenance greatly altered. Face puffy, frequently changing color; the lips swollen, sore. Face pale. Face very pale, with movement in the stomach (fourth day). Deathly pale. Countenance pale, dingy, and deathlike (in two hours). Face pale, puffy. Countenance pale and expressive of great anxiety. Face pale, distorted, expressive of the greatest pain. Countenance pale and sunken.

Face pale, restless, drawn. Face red. Face red and puffy. Their faces were covered with numerous red spots, which in the course of a few hours, scabbed over and became brown. The face became dark blue, the eyes protruded, with danger of suffocation. Face cyanotic. Face blue, as from threatening suffocation. Face dark blue. Jerking several times in the face, about the left ear, also on moving the head; afterwards, also, during rest.

Tearing in the left facial bones, then in the right side of the head. Some violent tearings, so that she started up, in front of the left ear, extending into the cheek, where it became a crawling. Cheek. Swelling of the left cheek. Cheeks livid (sixteenth day). Redness and sensation of heat in the right cheek. Bruised pain in the left malar bone, at first increasing, then suddenly disappearing. Pinching in the skin of the cheek, beneath the right eye, first increasing, then disappearing. A violent stitch frequently extending upward in the right cheek.

Sensation as if the cheeks were puffy, and as if albumen had dried upon the skin. A cooling burning in the left cheek.

Lips. Great swelling of the lower lip, and tongue, the margins of which were black; the mucous membrane of the whole mouth swollen, with burning in the mouth, pharynx, and stomach. Dark-grayish sloughs were observed across the upper lip, descending down the angles of the mouth; similar, marks were on the forepart of the neck, chest, and on the right arm. Corners of mouth sore, as if the seat of superficial ulceration; surface white (after half an hour). Lips swollen, red, painful to touch. The skin on the lower lip and the upper lip was scorched by the acid, and was of a reddish-brown color. The mucous membrane of the lips was thickened and white. The lips were white and shrivelled and had small blisters on their inner surface, and there were also similar appearances on the mouth and tongue. Lips and tongue blanched. Lips violet. Lips smooth, dry, brownish.

Epithelium of the lips, mouth, and fauces white. Lips white. The lips became cracked and scaly. Lips, tongue, and mouth swollen, and covered with white aphthous spots, exuding offensive bloody ichor. Peeling of the inner surface of the lips without pain.

China Chin and lips excoriated. Trismus. Tearing here and there in the lower jaw.


Teeth. The teeth presented a yellow and black fur, like the sordes of fever. The teeth were of a chalky-dead whiteness, and had completely lost their polish. Subsequently, all the teeth broke off and fell out in pieces. Teeth on edge at various times. Teeth on edge the whole afternoon (after four hours). Toothache, aggravated by cold, relieved by warmth, preventing sleep all night. Toothache in the left lower row, in the evening after lying down. Gnawing toothache in the right lower jaw, in the evening, worse after lying down till 2 A.M.

Gnawing pain in the back tooth and in the incisor, only when biting on something hard. Digging pain in a hollow back tooth during and after chewing something hard. Pain pressing inward in the right upper incisor. Frequent painful tearing in the teeth of the left side. Tearing in the left lower teeth, in the bed, in the evening till midnight. Tearing in the left eye-tooth and in the lower jaw, all night, during the menses. Gum. Swelling in the gum of the right lower jaw; when pressed, pus exudes.

Ulcerated gum. Gum and inner surface of the lips grayish white, thick wrinkled. The gum has a furzy feeling; bleeds on the slightest touch. Tongue. Tongue horribly swollen. Tongue swollen, covered with wrinkled white skin. Tongue and throat horribly swollen; swallowing impossible. Tongue, cheeks, and mouth swollen. The mucous membrane of the tongue and mouth was corrugated, thickened, and milky white. Tongue thick, white, denuded of mucous membrane. Phlyctenae on the back of the tongue and the palatine arch (second day). Tongue covered with crusts of a grayish-white color; the tip and edges red. Tongue denuded at the tip and intensely red; parts of it covered with a thick white coating. The tongue became eroded, white, and dry (second day).

Mucous membrane of the tongue, mouth, and fauces of a pearly- white color, and covered with a white viscid secretion. Tongue presented a dead-white appearance. Tongue and inside of the mouth white (second day); the pellicle covering the mouth have dropped, the mucous membrane beneath being bright red and very sensitive (fourth day). Tongue redder than natural, often bluish red, and with a peculiar shining surface. The tongue has cast of its cuticle, and is quite red with prominent papillae (fourth day). Dark tongue. Tongue shrivelled, small. (Tongue dry.) (* Bracket.-HUGHES. *) Tongue insensible; very dry in the center (after six hours). General Mouth. breath very offensive.

Frothing at the mouth, with constant retching. Black frothy matter issuing from mouth. A discharge of stringy copper-colored mucus and froth was issuing from the dependent corner of the mouth. The mouth was filled with a frothy, viscid, tenacious fluid, which he ejected in considerable quantities, with almost constant and distressing retching, caused by the fluid irritating the fauces. The fluid ejected was of a reddish- brown color, containing shreds of mucus membrane, and seemed to be a mixture of the mucus and saliva; its reaction on test-paper neutral. Much brownish mucus in the mouth. Mucus frequently comes into the mouth, which causes choking, hacking; is obliged to swallow it constantly. Swelling of the whole mouth and fauces.

Mucus membrane of the mouth swollen, covered with brown bloody liquid, which was constantly expectorated. All the soft portions of the mouth and fauces were frightfully swollen and inflamed, the corners of the mouth burnt, with burning heat in the pharynx and oesophagus.Mucous membrane of the palate and pharynx swollen and injected, with several ulcerations. Whitish-gray swelling in the mouth and fauces. Whole mouth, fauces, and pharynx inflamed. The inside of lips, tongue, and fauces were swollen, having the appearance of being smeared with thin arrowroot (after half an hour). On examination of the body, the mouth, lips, and part of the chin were found to be charred and desiccated. Mouth and fauces shrivelled and dry. Large superficial ulcerations in the mucous membrane of the mouth, with discharge of bloody liquid. Aphthae in the mouth. Vesicles on the inner surface of the left cheek. Mouth, tongue, and throat white, denuded of mucous membrane. Mucous membrane of the mouth, throat, and wherever the acid touched, was discolored. All the parts touched by the acid, from the mouth as far as could be seen, became covered with crusts and exuded an offensive ichor; the parts finally became aphthous and gangrenous. The acid had caused large white patches in the mouth and throat; the whole internal portions of the mouth and tongue were white, with a large quantity of tenacious glairy mucus. All the soft parts of the mouth and fauces covered with a thick fuzzy membrane. The mouth, tongue, lips, fauces, and pharynx, as far as could be seen, had a whitened and swollen appearance. Mucous membrane of the mouth, lips, and throat pearly white. Mucous membrane of mouth white and ragged. Lining membrane of mouth had a white bleached appearance. The mouth, lips, tongue, and fauces were white and slightly excoriated (in two hours). The whole mouth and pharynx covered with a thick white coating; swallowing difficult; voice without sound. Mucous membrane of mouth and fauces were covered with a whitish fur, which was already peeling off in parts, leaving a raw red-dish-brown surface; this was especially the case on the dorsum of the tongue and the end of the uvula. The inside of the mouth, as well as the surface of the tongue, was dry, white and corrugated, as far as the lower lip, where there was a distinct line of demarcation. Mouth of a brown color. On the second day, the mouth and fauces were covered with fungoid blackish-red masses. Inside of mouth of an ashy-gray color. Frightful pains in the mouth and stomach.

Transient dryness of the mouth. Disagreeable sensation of dryness in the mouth, for two days. Complained of great pain and of burning heat in his mouth and throat. Sore pain in both corners of the mouth. Pressure, as with a finger, just above the left corner of the mouth. Burning sensation in mouth, fauces, and gullet. Burning pains in the mouth and throat.-290.) Burning heat of the mouth, pharynx, and oesophagus. Burning pain in the mouth, along the oesophagus to the stomach. Excessive burning pain in the mouth, pharynx, and pit of the stomach. Violent burning in the mouth and oesophagus to the stomach. Sharp burning heat in the mouth, pharynx, and stomach. Violent burning pain in mouth and throat; he spoke with difficulty and with pain. Intolerable burning in the mouth and throat. Violent burning pains in the mouth, pharynx, and pit of the stomach. Saliva. Salivation; (second day). Profuse salivation. Excessive flow of tasteless saliva. Frequent collection of watery saliva in the mouth. Collection of saliva in the mouth, as from hunger, lasting several hours. Collection of much saliva of a saltish taste in the mouth, even in the morning. Collection of saliva, with acceleration of the pulse. Taste. Bad taste in the mouth, in the morning after waking (fifth day). The mouth is insipid and pasty, in the morning in bed, which disappears after rising. Very bad offensive taste in the mouth. Bread has a bitter taste, like bile, and causes great pressure in the stomach. Loss of taste.

Speech. Could only speak in a whisper, and was scarcely able to open the mouth, from which exuded a ropy mucus (after ten hours).

She could speak or swallow only with the greatest difficulty.

Speech short, abrupt, hoarse, with at times hoarse hacking cough.

He could not articulate distinctly, but was quite sensible to what was going on about him. Speech very difficult. Speech scarcely intelligible. Inability to talk or move. Speechlessness.


The throat is swollen, as if there were a lump in it. Constant hawking of tenacious masses of mucous membrane. Constant hawking, retching, and vomiting of bloody, reddish-brown mucus, which was so acid that it burnt holes in the linen. Frequent, but slight hawking or cough (second day). Tough mucus, in throat.

Throat near the cricoid swelled and painful (twenty-fourth day); tumor of neck very painful (twenty-seventh and following days).

Redness and painful sensitiveness in the throat, continued fro a long time. Intense constriction, in the throat. Throat sensitive. Pain along the throat and in the chest, as far down as the stomach, aggravated by swallowing, talking, or even by turning the body. Most frightful was felt in the throat and along the oesophagus, and especially in the epigastric region. Violent pain in the throat and stomach. Burning pain in the throat and stomach. Burning in the throat and stomach. Burning in the throat along the oesophagus to the stomach, with icy coldness of the rest of the body. Violent burning in the throat and along the upper part of the oesophagus. Contractive sensation in the throat, especially in the right side, when swallowing and when not. Sore throat on swallowing, in the evening, worse on the left side. Rawness in the throat, after almost every new dose.

Scraping and rawness, in the throat. Scraping in the throat.

Feeling as of mucus in the throat, which neither comes up or goes down, and does not provoke hawking. Sticking in the left side of the throat on swallowing; also in the evening, with pain externally on touch. Acidity in the throat. Uvula and Fauces.

Uvula and root of the palate oedematous. Pain in the fauces and oesophagus. Violent pain in the fauces and ears. Pharynx and Oesophagus. Pharynx very dark red. Powerful constriction of the pharynx (after one hour and a half). Great tenderness from the pharynx down to the epigastrium (after ten hours). Burning in pharynx (immediately). Violent burning pain in the pharynx and upper part of the oesophagus. After seven days the whole mucus membrane of the oesophagus became exfoliated in the form of a tube several lines thick, and about a foot long (the transition from the oesophagus to the stomach could be distinctly seen), the cast was exceedingly offensive. After this the patient seemed to improve; complained of excessive hunger. On the twenty-first day there was vomiting of blood and mucus, and he again took to his bed; about a month after the poisoning he complained again on swallowing, of a pain which he described like a cutting, in the side of the throat. Stricture of the oesophagus, with frequent painful vomiting. Stricture of the oesophagus was consequent upon the poisoning, and was so great that the patient could with difficulty swallow water. Stricture of the oesophagus. Closure of the oesophagus. Oesophagus very sensitive to pressure. Pain extending from the oesophagus to the umbilical and epigastric regions. Excessive pain in the oesophagus and stomach. Great pain in the line of the oesophagus. Burning heat, extending from the oesophagus to the stomach. Excessive burning, extending along the oesophagus to the stomach. Swallowing. He could swallow fluid in small quantities, but with great difficulty, causing great pain and a convulsive cough, and sometimes the fluid returned through the mouth and nares. Difficulty in swallowing, and on examination, a large circumscribed swelling, commencing opposite the cricoid cartilage, and extending down the course of the trachea two inches, was found moving on deglutition (in two weeks). She vainly endeavored to swallow. Inability to swallow.

Swallowing difficult; it seems as though there were an obstruction at the pit of the throat. Some difficulty in swallowing (second day). Great difficulty in swallowing.

Violent dysphagia. Complete dysphagia. Spasmodic dysphagia. Great pain in attempting to swallow, and an extreme sensation of heat and dryness, and constriction in the throat.

External Throat. After four days there came on swelling of the parotids, with salivation, lasting eight days, and constipation.

Very circumscribed and painful swelling of the left parotid, with suppuration, the pus being evacuated by incision (sixth week).

Swelling and inflammation of the submaxillary glands, at times with stitches in them. Pain in the submaxillary gland, as far as into the tongue; the tongue feels burnt.


Appetite and Thirst. Great appetite and good taste to food; but qualmishness after eating, so that he is obliged to stop eating before he is satisfied. Distressing hunger, but the patient was unable to retain the smallest quantity of nourishment. Increased hunger and appetite (first day). She is hungry, but as soon as anything is taken into the mouth it nauseates her. She is hungry, and yet eats without appetite, with discomfort in the stomach after eating, for several days). Desire for fresh plums.

Loss of appetite. Loss of appetite and discomfort; food has a natural taste, yet is disagreeable. Aversion to eating, which disappears towards evening. Thirst. Thirst, after vomiting.

Constant terrible thirst. Thirst and dry tongue during the menses. Excessive thirst etc. Excessive thirst, with inability to drink. Burning thirst. Eructations. Frequent eructations. Eructations at first empty, then bitter, slimy, in the morning after coughing. Bitter eructations, frequently after dinner. Bitter eructations. Eructation like onions. Frequent long-lasting empty eructations (soon). Uprisings of water, frequently disappearing after dinner. Rising of water from the stomach. Uprisings of salt-water in the mouth before vomiting. Sweetish gulping of water. Sour eructations. Sour eructations, even when walking in the open air. Sour bitter uprisings (fourth day). Regurgitation of food. Food rises up again, after coughing. Hiccough. Hiccough. Hiccough at night.

Constant hiccough. (* Repeatedly occurring after clysters containing the acid.-HUGHES. *) Hiccough while smoking, as usual.

Violent hiccough. Violent hiccough and vomiting, especially after drinking. Nausea and Vomiting. Nausea. Nausea and effort to vomit from the slightest liquid. Nausea, with chilliness.

Excessive nausea; everything turns around in the stomach, rises up and will come up; is obliged to swallow it down again. Nausea and collection of saliva in the mouth, with constrictive pain in the stomach and abdomen frequently (eighth day). Nausea in the mouth towards noon, although food and drink are relished.

Qualmish nausea, without aversion to anything, disappearing on eructating, soon. Qualmishness, and a feeling as if the stomach were disordered. Obliged to make great effort to avoid vomiting. Qualmish nausea in the stomach, with a feeling of mucus in the throat. Frequent retching. Retching and vomiting. Constant retching; he threw up a glairy fluid, mixed with numerous small shreds of coagulated membrane. Frequent retching and vomiting of small quantities of dark coffee like liquid. Retching and vomiting almost incessant. Violent retching and vomiting, especially of blood. Constant retching and vomiting of bloody mucus, with black fibres. Retching and vomiting of blood.

Vomiting. Vomiting and purging. Repeated vomiting (second day).

Violent vomiting. Violent vomiting, for two or three minutes.

About the author

TF Allen

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.

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