Carbo Vegetabilis Materia Medica: Keynotes & Clinical Use

Carbo veg materia medica: collapse with air-hunger, wants to be fanned; upper-abdominal flatulence; never well since — Boericke, Clarke, Boger, Kent compared.

Marco Ruggeri

Marco Ruggeri·Founder of Similia

August 4, 202611 min read

Abstract ethereal visualization representing the Carbo Vegetabilis remedy profile

Carbo vegetabilis — vegetable charcoal — is the remedy of the failing flame. Boericke opens with the keynote: "Disintegration and imperfect oxidation is the keynote of this remedy."

Everything in the remedy follows from that half-extinguished combustion. "Blood seems to stagnate in the capillaries, causing blueness, coldness, and ecchymosis. Body becomes blue, icy-cold" — and out of the stagnation comes the most famous collapse picture in the materia medica: "The patient may be almost lifeless, but the head is hot; coldness, breath cool, pulse imperceptible, oppressed and quickened respiration, and must have air, must be fanned hard, must have all the windows open. This is a typical state for Carbo veg."

The substance itself carries a lesson Kent will not let pass: charcoal "is quite inert in crude form and the true healing powers are not brought out until it is sufficiently potentized" — for him "a great monument to Hahnemann". It is, he says, "one of those deep acting, long-acting antipsoric medicines" that "cures conditions that are of long standing — those that come on slowly and insidiously."

Clarke supplies the third organising idea: "The signs and symptoms of decay and putrefaction are the leading indications for its medicinal use: decomposition of food in the stomach; putrid diseases and ulcerations; symptoms of imperfect oxygenisation of the blood."

This guide profiles Carbo veg for clinical study from Boericke's Materia Medica, Boger's Synoptic Key and General Analysis, Lippe's Keynotes, Kent's Lectures and Clarke's Dictionary. The originals can be read in full — Clarke's Carbo vegetabilis, Boericke's Carbo vegetabilis and Kent's Carbo vegetabilis — through Similia's free digital materia medica.

The Carbo Vegetabilis Constitutional Type

Boericke sketches the constitution in one line: "The typical Carbo patient is sluggish, fat and lazy and has a tendency to chronicity in his complaints." Kent builds the portrait around a single word: "Sluggishness is a good word to think of when examining the pathogenesis of Carbo veg... Everything about the economy is sluggish, turgid, distended and swollen." The veins lead — "the veins are lazy, relaxed and paralyzed. Vaso-motor paralysis" — with varicosis, puffy hands, a dusky face that flushes after a glass of wine and sinks back to purple.

The decisive anamnestic feature is the broken timeline. Boericke: "Persons who have never fully recovered from the effects of some previous illness." Clarke, quoting Guernsey, gives the classic case-taking examples: "asthma has troubled him ever since he had whooping-cough in childhood; he has dyspepsia ever since a drunken debauch which occurred some years ago; he has never been well since the time he strained himself so badly." Kent hears it in the consulting room: the patient, or a mother of her child, "has never been quite well since an attack of malarial fever" — or measles, typhoid, scarlet fever.

Boger's Synoptic Key names the terrain: "Low, grave, depraved, or cachectic states. Atony, failing reaction or obstinate sequelæ. Complaints of old age. WEAKNESS, FLATULENCE, FETOR OR AIR HUNGER, with most complaints."

Mental and Emotional Picture

Torpor and indifference. Clarke: "The mental state of Carb. v. is one of torpor and indolence." Kent quotes the proving — "Heard everything without feeling pleasantly or unpleasantly, and without thinking about it" — and pushes it to its unsettling conclusion: "He does not quite know whether he loves his wife and children or not." The affections are not perverted but blotted out by the general stagnation.

Slow thinking. Kent: "Slow to think; sluggish; stupid; lazy. Cannot whip himself into activity." Clarke records "sudden, and periodical weakness of memory" and "slowness of apprehension"; Boericke's mind section is three phrases, one of them "Sudden loss of memory."

Fear of the dark and of ghosts. Boericke: "Aversion to darkness. Fear of ghosts." Kent extends it to sluggish school children "who are sluggish, slow to learn, and suffer from night terrors; they will not sleep alone, or go into a dark room without someone with them."

The horrors of sleep. Kent: "On going to sleep there is anxiety, suffering, jerking, twitching", and he "has the horrors. Everything is horrible. Horrible visions; sees ghosts." Boger compresses it: "Horrors during sleep." The patient wakes anxious, in cold sweat, unrefreshed.

Anxious irritability. Boger: "Slow, anxious and irritable. Dejected. Unhappy." Clarke adds evening anxiety (4–6 p.m.), timidity and "irresolution, and embarrassment in society".

Physical Affinities

Stomach and Abdomen

The daily face of the remedy. "Eructations, heaviness, fullness, and sleepiness; tense from flatulence, with pain; worse lying down... Temporary relief from belching. Rancid, sour, or putrid eructations" (Boericke). Digestion has all but stopped: "Digestion slow; food putrefies before it digests... Aversion to milk, meat, and fat things. The simplest food distresses." Boger localises the gas — "EXCESSIVE FLATULENCE; obstructed; distending; < upper abdomen...; < lying. All food turns to gas" — with belchings "RANCID; loud, without >". The abdomen is "greatly distended; better, passing wind", the flatus "hot, moist, offensive", and the patient "cannot bear tight clothing around waist and abdomen".

Circulation, Collapse and Haemorrhage

The venous stasis culminates in Boger's "Tremulous, WEAK, SICK AND EXHAUSTED; suddenly; with pulselessness. Fainting. Collapse... Cold, yet wants air or to be fanned." Kent's collapse is a body already cadaverous: "Collapse with cold breath, cold tongue, cold face. Looks like a cadaver. In all these conditions of coldness the patient wants to be fanned." Haemorrhage "runs all through the remedy" (Kent) — but passive: "it is a passive capillary oozing", dark venous blood from any mucous surface, oozing after operations and confinement where the vessels will not contract. Boericke: "Hæmorrhage from any mucous surface."

Temperature Paradoxes

Icy coldness outside, burning within. Boger: "ICY COLD; tongue; knees; legs, at night; breath; foot... Warm head, cold limbs. Internal, burning heat; at heart; in chest; with icy skin... Icy, but wants air." Kent: "Running through the remedy there is burning. Burning in the veins, burning in the capillaries... Internal burning and external coldness." Lippe adds the fever keynote: "Intermittent fevers, with thirst only during the cold stage." Boericke's extremities line — "cold from knees down" — is one of the remedy's most confirmable particulars.

Respiratory

"Breath cold; must be fanned... Asthma in aged with blue skin" (Boericke). Hoarseness "worse, evenings, talking"; "occasional spells of long coughing attacks" — a phrase Lippe repeats verbatim as a keynote; whooping cough "especially in beginning"; spasmodic cough with gagging, burning in the chest and "wheezing and rattling of mucus". Boger records the "senile asthma" and "destructive lung diseases" of its cachectic terrain.

Skin, Ulcers and Head

"Blue, cold ecchymosed" skin, marbled with venous overdistension; "indolent ulcers, burning pain", varicose ulcers, bed sores, "senile gangrene beginning in toes" (Boericke). Kent explains why nothing heals: "The tissues are indolent... If an ulcer is once established, it will not heal", and any low inflammation "becomes black or purple and sloughs easily". The head gives "aches from any over-indulgence"; Kent's "awful occipital headaches" — as if "something was grasping the occiput" — with hair that "falls out by the handful" and a scalp so sensitive that the pressure of the hat is felt long after it is taken off.

Key Modalities

Worse from:

  • Evening; night and open air; cold (Boericke)
  • Rich food — "fat food, butter, coffee, milk, warm damp weather; wine" (Boericke); Boger adds "HIGH LIVING. Rich foods. DISSIPATION"
  • Depletions and exhausting diseases — Lippe: "Bad effects from the loss of fluids"
  • Lying down (the flatulent distension); pressure of clothes
  • Overlifting; walking in open air (Boger)
  • Abuse of quinine and mercury (Lippe)
  • Wine — Lippe: "Bad effects from wine-intoxication the day previous"

Better from:

  • Eructation — Lippe's "Amelioration from eructations"
  • Being fanned; cool air — Clarke: "must be fanned; wants to be fanned hard"
  • Elevating the feet (Boger)
  • Passing wind

The thermal state is the remedy's signature contradiction: chilled by cooling off, worse from warmth, icy cold — yet craving moving air. Boger holds both poles in one line: "Icy, but wants air."

Keynote Symptoms

  • Collapse with air-hunger — cold breath, cold sweat, imperceptible pulse, "must be fanned hard"
  • Never fully recovered from a previous illness — the broken timeline
  • Excessive flatulence of the upper abdomen; all food turns to gas
  • Loud rancid belching with temporary relief
  • The simplest food distresses; aversion to milk, meat and fats
  • Icy coldness — knees, breath, tongue — with internal burning
  • Blueness: dusky face, blue skin, ecchymoses, varicosis
  • Passive, dark, oozing haemorrhage from any mucous surface
  • Indolent ulcers that will not heal; tendency to gangrene of margins
  • Thirst only during the cold stage of fever
  • Fear of the dark and of ghosts; horrors on going to sleep
  • Worse rich food, wine, warm damp weather; better eructation and fanning

Clinical Applications

States of collapse. Boericke names cholera and typhoid; Kent adds "septic conditions — blood poisoning, especially after surgical operations and after shock". The fanning, the cold breath and the open windows are the confirmations.

Flatulent dyspepsia. The gastralgia of sluggish, venous patients — including nursing women, where Boericke records "excessive flatulence, sour, rancid belching" — worse lying, better belching.

Chronic sequelae. The "never well since" cases: after measles, scarlet fever, malaria, typhoid, strains, debauches — where Kent says the remedy "brings about reaction" so that "a better remedy may be selected".

Asthma and cough of the aged. Blue-skinned senile asthma, evening hoarseness, long coughing spells, early whooping cough.

Passive haemorrhage. Venous oozing after operations and confinement, daily epistaxis with pale face, bleeding gums.

Indolent ulcers and varicosis. Burning varicose ulcers, bed sores, threatened gangrene in old people.

Metastasis of mumps. Kent: when chilled mumps leave the parotid for the mammae or testes, Carbo veg "is one of the medicines to restore order".

Differential Diagnosis

Carbo veg vs. China. Complementary remedies — Clarke and Boger both list China — and the two great medicines for debility from loss of fluids with flatulent distension. Carbo veg's gas sits in the upper abdomen, its belching is loud, rancid and briefly relieving, and its whole economy runs to coldness, blueness and collapse; China's distension is classically relieved by neither belching nor flatus, and its debility is marked by periodicity.

Carbo veg vs. Veratrum album. The two collapse remedies of the cholera group. Both are icy cold with feeble pulse; Veratrum's signature is the cold sweat on the forehead with simultaneous vomiting and purging, while Carbo veg's is the cold breath with air-hunger — the patient too weak to be restless, wanting only to be fanned.

Carbo veg vs. Arsenicum album. Both burn internally in grave, septic, cachectic states, and Boericke lists Arsenicum among the comparisons. Arsenicum is anxious, restless and thirsty for sips, its burnings relieved by heat; Carbo veg is torpid rather than restless — Clarke separates them exactly: its "torpor and indolence... distinguishes it from Ars. in many cases" — and it wants cool moving air, not warmth.

Carbo veg vs. Lycopodium. Clarke: "Many of the effects of Carb. v. are like those in Lycopod., and an occasional dose of Carb. v. assists the action of Lyc." Both are flatulent remedies intolerant of tight clothing; Lycopodium centres on the lower abdomen with 4–8 p.m. aggravation, Carbo veg on the upper abdomen with evening aggravation and the venous, collapsing ground. Against Nux vomica in dyspepsia, Clarke's contrast is anatomical: "Nux is thin, spare, yellow, wiry; Carb. v. sluggish, stout, lazy."

Repertorisation Tips

These rubrics carry Carbo vegetabilis in high grade:

  • Generals; FANNED, being; desire to be
  • Respiration; COLD breath
  • Generals; COLLAPSE; sudden
  • Generals; WEAKNESS; illness, since a previous
  • Mind; FEAR; ghosts, of and Mind; FEAR; dark, of the
  • Stomach; ERUCTATIONS; amel.
  • Abdomen; DISTENSION; upper abdomen
  • Abdomen; CLOTHING; intolerance of
  • Rectum; FLATUS; offensive
  • Generals; HÆMORRHAGE; dark, oozing blood
  • Extremities; COLDNESS; knees
  • Chill; THIRST; during chill; heat, none during
  • Skin; DISCOLORATION; blueness

Anchor on the generals — failing reaction, air-hunger with coldness, the never-well-since history — before the abundant stomach particulars, which many remedies share. The combination of relief from belching, upper-abdominal distension and desire to be fanned is close to pathognomonic. Our beginner's guide to repertorisation sets out the method in more detail.

Deepening Your Study

  • Boericke gives the collapse picture, the imperfect-oxidation keynote and the differentiated dose line
  • Boger's Synoptic Key supplies the terrain — low, grave, cachectic states with weakness, flatulence, fetor or air-hunger — and the temperature paradoxes
  • Boger's General Analysis condenses the generals: open air ameliorates, collapse, flatulence, fetor, bluishness, typhoid states
  • Lippe's Keynotes record the loss-of-fluids causation, thirst only during the chill, and amelioration from eructations
  • Kent's Lectures develop the sluggish venous constitution, the passive haemorrhages, the horrors of sleep and the never-well-since anamnesis
  • Clarke's Dictionary holds the decay-and-putrefaction rationale, Guernsey's case-taking examples and the fullest relationship notes

You can read all of these side by side for any remedy through Similia's free digital materia medica. To place Carbo veg among its peers, see the guide to the essential polycrest remedies, or read how materia medica and repertory work together in case analysis.

Read Carbo vegetabilis in the original — free

The classical entries behind this guide are on Similia in full, not in summary. Free on every plan, alongside the seven classical repertories and AI semantic search.

Frequently asked questions

What are the keynote symptoms of Carbo vegetabilis?

Vital collapse with air-hunger — Boericke's 'must have air, must be fanned hard, must have all the windows open' — with cold breath, cold knees, blueness and an imperceptible pulse; excessive flatulence of the upper abdomen with rancid belching that gives temporary relief; internal burning with icy external coldness; passive dark oozing haemorrhages; and the history that the patient has 'never fully recovered from the effects of some previous illness'.

What is Carbo veg used for in homeopathic practice?

The sources record it for states of collapse in cholera and typhoid, for the flatulent dyspepsia of sluggish venous constitutions where 'the simplest food distresses', for asthma of the aged with blue skin, whooping cough in its beginning, passive haemorrhages from any mucous surface, indolent ulcers and varicosis, and for chronic complaints dating from an exhausting illness, a strain or a debauch.

What does 'never well since' mean in a Carbo veg case?

Boericke lists 'persons who have never fully recovered from the effects of some previous illness', and Clarke quotes Guernsey's classic examples: asthma ever since whooping-cough, dyspepsia ever since a drunken debauch, ailments dating from an old strain or injury. When a chronic case is anchored to such a landmark and the reactive power has never returned, Carbo veg is one of the first remedies to study.

How does Carbo veg differ from China in flatulent complaints?

Both are complementary remedies for debility from loss of fluids with enormous flatulent distension. In Carbo veg the flatulence sits characteristically in the upper abdomen, belching is loud and rancid and gives momentary relief, and the whole economy tends towards coldness, blueness and collapse. China's distension is relieved by neither eructation nor flatus, and its debility carries periodicity rather than the Carbo veg air-hunger.

What potency of Carbo veg do the sources recommend?

Boericke's dose line differentiates by sphere: 'First to third trituration in stomach disorders. Thirtieth potency and higher in chronic conditions, and in collapse.' Kent adds the pharmacological point that charcoal is 'quite inert in crude form and the true healing powers are not brought out until it is sufficiently potentized' — for him a monument to Hahnemann's method.

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Carbo Vegetabilis Materia Medica: Keynotes & Clinical Use | Similia Blog