Lecithinum

Lecithinum
Short name
Lec.
Latin name
Lecithinum
Common names
Lecithin | Phosphatidyl-choline complex | Egg-yolk lecithin | Soya lecithin
Miasms
Primary: Psoric
Secondary: Sycotic
Kingdom
Minerals
Family
Organic compound
Last updated
20 Sep 2025

Substance Background

A complex mixture of phosphorised lipoids (chiefly phosphatidyl-choline with allied phosphoglycerides) occurring abundantly in egg-yolk, animal brain and nerves, and in many seeds. Pharmacologically and physiologically lecithins are structural constituents of myelin, nerve cell membranes, and red corpuscles; they are carriers of phosphorus and choline and play a role in fat transport and nutrition [Hughes], [Clarke]. The homœopathic tincture (“Lecithinum”) is prepared from purified lecithin (usually of egg or soya origin) according to pharmacopœial directions; triturations are also employed [Allen], [Clarke]. Classical writers noted its trophic influence: tendency to improve appetite, weight and hæmoglobin, with a general nervine-tonic effect in states of exhaustion, brain-fag, sexual debility and convalescence; pathogenesis is gathered from such physiological effects, fragmentary provings, and abundant clinical confirmations [Clarke], [Boericke], [Hering].

Proving Information

No complete Hahnemannian proving exists; the picture rests on partial provings, pharmacodynamic observations, and [Clinical] experience in neurasthenia, anæmia, sexual weakness, insomnia of exhaustion, failure to thrive, and convalescence—with repeated notes of increased body-weight, better colour of blood, and revival of mental and sexual power under its influence [Allen], [Clarke], [Boericke], [Hughes].

Remedy Essence

The Lecithinum patient is worn thin by use rather than by disease. His centre is functional exhaustion with a trophic deficit: the brain is over-drawn; the blood is pale; the muscles tremble with little; sexual power flags; sleep is poor because the forces are spent, not because the mind is over-excited. He is best seen in students, clerks, professionals, nursing mothers, and convalescents who, after strain, cannot fill the day without blankness and a dull empty headache. The modalities clinch: worse from long mental effort, sexual excess, late hours, close rooms, and worry; better from rest, routine, fresh air, simple nourishing food, early sleep, and reserve in venery. The signature is rebuild: appetite returns, weight and colour improve, attention holds, and sexual confidence follows as the organism is resupplied—an action consonant with lecithin’s role in myelin and cell membranes and the observed amelioration of blood and nutrition under its use [Hughes], [Clarke], [Boericke].

Kingdom-wise, as an organic phosphorised compound, Lecithinum stands between nerve salts and phosphorus: it lacks Phosphorus’ burning, hæmorrhagic, and erethistic qualities; it shares Kali-phos.’s nerve fatigue but adds a somatic up-building that shows on the scale and in the face. In the sexual sphere it is not the irritable, talkative Selenium, nor the indifferent Agnus; it is the worker whose power has ebbed and who recovers with rest and regimen. In children and youths, the picture is over-schooling or post-illness failure to thrive, with pallor and short breath on exertion; as routine and nourishment are restored, sleep deepens, headache disappears, and mood steadies. Prescribing pivots on three pillars: (1) Brain-fag with weak memory and empty headache, (2) Anæmia with easy fatigue and palpitations of weakness, and (3) Sexual debility from excess or convalescence, all worse from over-use and better from rest, air, early sleep and simple food. When similitude takes hold, the change is quiet: earlier bed, earlier waking with appetite, steadier pulse on stairs, clearer head at noon, and an end to anxious emissions. Lecithinum thus serves as a nutritive similimum where the system is not inflamed or shattered, but spent—asking not for lash or sedative, but for order and rebuilding.

Affinity

  • Cerebro-spinal axis—brain-fag, mental prostration, memory weakness, dull headache from study; lecithin’s structural role in myelin gives a trophic rationale (see Mind/Head) [Clarke], [Hughes], [Boericke].
    Blood and nutrition—low hæmoglobin, pallor, rapid fatigue; improves appetite, weight, and colour; post-febrile or surgical convalescence (see Generalities) [Clarke], [Boericke].
    Male generative system—sexual debility, emissions, mental depression from sexual excess; functional impotence with neurasthenia (see Male/Mind) [Clarke], [Allen].
    Female sphere—debility with poor lactation, irritable weakness around menses or after confinement; “nervous mothers” (see Female/Sleep) [Clarke], [Boericke].
    Peripheral nerves—tremulous weakness, heaviness of limbs, early fatigue from slight exertion (see Extremities) [Boericke], [Phatak].
    Digestive assimilation—poor assimilation of fats, easy satiety, flat nausea on mental overwork; appetite returns with rest (see Stomach/Abdomen) [Clarke].
    Cardio-circulatory tone—palpitation of weakness, soft impressionable pulse in anæmic states (see Heart/Generalities) [Hughes], [Clarke].
    Sleep–wake regulation—insomnia from nervous exhaustion, unrefreshing sleep, day-drowsiness (see Sleep) [Clarke], [Boericke].

Better For

  • Rest of mind and body; intermissions in brain-work restore tone [Clarke], [Boericke].
  • Nutritious, simple food; milk, eggs, broths; regular meals (echoes Stomach/Generalities) [Clarke].
  • Open air and gentle exercise short of fatigue; colour improves [Boericke].
  • Sleep, especially early hours; a short daytime nap steadies nerves [Clarke].
  • Encouragement and company that is quieting; nervous dread lightens (Mind) [Clarke].
  • Warmth in chronic weakness; chilly states gain by warm clothing [Boericke].
  • Steady routine, fixed hours; erratic habits exhaust less [Clarke].
  • Abstinence from sexual excitement; powers return with reserve (Male) [Allen], [Clarke].

Worse For

  • Mental over-exertion, examinations, prolonged reading or writing (Mind/Head) [Clarke], [Boericke].
  • Sexual excess; frequent emissions; loss of vital fluids (Male/Generalities) [Allen], [Clarke].
  • Rapid growth, adolescence; or prolonged lactation (Female/Generalities) [Clarke].
  • Prolonged convalescence after fevers; late hours (Generalities) [Boericke].
  • Worry, anticipatory anxiety; responsibility beyond strength (Mind) [Clarke], [Kent].
  • Close rooms, want of fresh air; sedentary indoor life (Generalities) [Boericke].
  • Fats in excess when digestion is feeble; sloppy rich foods (Stomach) [Clarke].
  • Coffee and stimulants late at night—sleep lighter, palpitations (Sleep/Heart) [Clarke].

Symptomatology

Mind

A picture of neurasthenic prostration with brain-fag. There is mental weariness after slight application, inability to sustain attention, and a tendency to postpone tasks from sheer emptiness of power; yet during remission he is hopeful and plans anew—this tallies with the better-for rest and routine already noted [Clarke]. Memory weak, especially for names and recent events; misplaces words; simple sums confuse after a day’s strain (Mind ↔ Head). Irritability from exhaustion alternates with a flat indifference; he dreads conversation in the evening when the head is “done,” but is brighter after open air or a nap (Mind ↔ Sleep/Modalities) [Boericke]. Depression is mild, coloured by sexual weakness or failures at work; he fears permanent decline, but revives under nourishment and order (Mind ↔ Male/Generalities) [Clarke], [Allen]. Anxiety before examinations with a blankness at the desk is frequent; Kali-phos. compares in the purely nervous sphere, while Lecith. adds a trophic aspect (weight, blood, sexual tone) [Clarke], [Kent]. Children who are over-taught grow peevish and dulled; a term’s rest and Lecith. restore appetence for learning.

Head

Dull, empty headache from over-use of the brain; a sense of weight over the brow and vertex, worse evening and in close rooms; better fresh air and food (Head ↔ Modalities) [Clarke], [Boericke]. Vertigo on rising suddenly in the anæmic; black specks on stooping; better lying. The head feels hot with cold extremities when reading late; yet temperature is not febrile. Scalp tender from tension; hair may fall in debilitated states, improving with nutrition (Head ↔ Generalities). In contrast to Picric acid (burning vertex, complete prostration) the Lecith. head is heavy-empty yet quickly relieved by rest and feeding [Clarke], [Farrington].

Eyes

Smarting and fatigue of eye muscles from continuous near work; letters blur; lids heavy; better from closing eyes briefly (Eyes ↔ Mind) [Clarke]. Dark under-eye circles with pallor. Photophobia slight; it is the weakness, not inflammation.

Ears

No fixed otic pathology; ears ring with anæmic palpitation on retiring; noises of the day over-excite and prevent sleep (Ears ↔ Heart/Sleep).

Nose

Pale, dry mucosa in run-down adolescents; occasional epistaxis in over-worked students, small and soon relieved.

Face

Pale, sometimes earthy; lips colourless in anæmia; flush returns after meals and air (Face ↔ Blood/Nutrition) [Clarke]. Expression fatigued; lines about mouth in the prematurely driven.

Mouth

Dryness after mental strain; tongue clean but pale; taste flat when exhausted; aphthous spots in delicate children at term’s end, healing with better diet and rest (Mouth ↔ Generalities) [Clarke].

Teeth

No constant tooth picture; dental neuralgia in the anæmic with late-night reading; better warmth and food; worse coffee.

Throat

Soreness and “catch” on talking long to class or at meetings; voice weak from general fatigue; not an inflammatory remedy.

Stomach

Variable appetite; ravenous at times yet soon satiated; or appetite poor with nausea at sight of rich foods (Stomach ↔ Modalities) [Clarke]. Fats aggravate when digestion is weak; simple fare suits. Hunger at 11 a.m. from brain work on an empty breakfast; better for a cup of broth or milk (micro-case). Nervous eructations; slight sinking at epigastrium in evening from long fasting (Stomach ↔ Generalities).

Abdomen

Flatulent distension in sedentary workers; borborygmi after hasty meals; better steady routine and slow eating. Abdomen soft; no inflammatory signs; it is the assimilative weakness that marks Lecith. [Clarke].

Urinary

Urine pale, copious in nervous subjects; phosphates may be increased in the over-worked (functional phosphaturia) [Clarke]. No burning; nocturia in anæmic youths after evening tea and study.

Rectum

Constipation from sedentariness and mental strain, with ineffectual desire at night; better for regular hours, fluids and simple fats; China and Nux-v. compare when drugging and irregular habits complicate [Clarke], [Kent].

Male

Sexual debility with quick emissions, depressed spirits, and brain-fag; impotence functional, from exhaustion; worse from sexual excess, better chastity and nutrition (echoing modalities) [Allen], [Clarke]. Prostatic irritation slight; backache after emissions; confidence returns as general tone improves. Compare Phos-ac. (apathetic, seminal losses), Selenium (marked prostatic irritability), and Agnus (profound impotence with indifference); Lecith. adds weight-gain and blood-colour [Clarke], [Boericke].

Female

Weakness, pallor, and poor lactation in nervous mothers; sleeplessness from exhaustion rather than pain; appetite capricious yet improves under routine (Female ↔ Sleep/Generalities) [Clarke], [Boericke]. Menses scanty and late in over-worked students, with dragging back; better for rest and nourishment. Libido low from fatigue; mood brighter as sleep deepens.

Respiratory

Sighing respiration with mental weariness; shallow breathing during prolonged desk-work; freer in open air (Respiration ↔ Mind/Modalities).

Heart

Pulse soft, easily accelerated by slight exertion or emotion; palpitation in bed after late study or coffee; better open air and sleep (Heart ↔ Modalities) [Clarke], [Boericke]. The heart feels “tired,” not painful; there is no true anginal picture. Responds as the blood improves.

Chest

Short breath on ascending in anæmic states; palpitation of weakness toward evening (Chest ↔ Heart) [Hughes], [Clarke]. Chest wall easily tired by speaking long; teachers and preachers revive with food and rest. No fixed cough.

Back

Dull lumbar weakness after emissions or long sitting; better walking in air; shoulders ache from writing; cervical stiffness in students (Back ↔ Male/Mind) [Clarke].

Extremities

Hands tremble on attempting fine work after a long day; legs heavy mounting stairs; easy fatigue from slight exertion; better short rests and warm clothing (Extremities ↔ Generalities) [Boericke], [Phatak]. Cold feet with hot head at night in readers.

Skin

Pallid, dry in anæmic youths; acne flares under examination stress; heals with improved regimen; not a primary cutaneous remedy.

Sleep

Insomnia from nervous exhaustion: difficulty falling asleep after evening work; mind blank yet overtired; when sleep comes late, it is unrefreshing, with daytime drowsiness (Sleep ↔ Mind/Generalities) [Clarke], [Boericke]. Early hours are the best; a short nap restores capacity. Children sleep heavily when routine is restored and appetite returns. Coffee late, or sexual excitement, breaks what little rest there is (echoing Worse).

Dreams

Anxious examination dreams, missing trains, work undone; dreams cease as order returns and confidence rises. Erotic dreams with emissions in exhausted men; fewer as strength builds (Dreams ↔ Male).

Fever

No specific pyrexia; flushes with palpitation in the anæmic on exertion; chilliness in draughts at desk. Feverishness clears with rest, not with diaphoretics.

Chill / Heat / Sweat

Chilly hands and feet; heat of head with reading; sweat easy on slight exertion in weak persons; perspiration odourless. Sweating relieves slight palpitation.

Food & Drinks

Craves simple, nourishing food; aversion to greasy rich dishes when run down; coffee late aggravates insomnia and palpitation (Food ↔ Sleep/Heart) [Clarke]. Tolerates milk and eggs well when digestion allows—often better after such fare (clinical).

Generalities

Lecithinum typifies trophic restoration in functional exhaustion: brain-fag, neurasthenia, sexual weakness, anæmia, failure to thrive, and long convalescence, with a reliable tendency to improve appetite, weight, and blood colour [Clarke], [Boericke], [Hughes]. The modalities are decisive: worse mental over-exertion, sexual excess, close rooms, worry, late hours; better rest, routine, open air, wholesome nourishment, sleep, and chastity—and the case “lifts” with these, which tallies with Mind, Sleep and Male sections. It stands midway between Kali-phos. (pure nerve fatigue, fretful) and Phos-ac. (apathetic collapse from losses); Lecith. adds nutritive rebound (weight, blood) and sexual tone [Clarke], [Kent], [Boericke]. Compare Pic-ac. where the head burns and prostration is profound; China when loss of fluids with flatulence rules; Selenium for sexual irritability with emissions; and Nux-v. when habits (late, coffee) dominate. Direction of cure is from irritable weakness to quiet capacity, from blankness to sustained attention, from palpitation to easy exertion, and from emaciation/pallor to weight and colour; as these integrate, sleep is earlier and refreshing, emissions cease, and the student or convalescent resumes work within bounds.

Differential Diagnosis

  • Aetiology—Exhaustion after loss and over-use
    • Phos-ac.: apathy, indifference, debility from losses; little rebound in weight/blood; adds trophic build-back and sexual tone. [Clarke], [Kent].
    • China: collapse after hæmorrhage/fluids, flatulence, hypersensitivity; mental power soon returns; for longer brain-fag with nutritive need. [Farrington], [Boericke].
    • Pic-ac.: intense brain-fag with burning vertex, spinal exhaustion; more fixed prostration; milder, nutritive. [Clarke], [Farrington].
  • Mind/Study—Over-work, exams
    • Kali-phos.: nervous fret, oversensitive, quick exhaustion; slower, heavier, with anæmia and sexual weakness. [Kent], [Clarke].
    • Nux-v.: irritable, driven, dyspepsia from stimulants; quieter, seeks routine, dislikes late coffee. [Kent].
  • Keynotes—Sexual debility with brain-fag
    • Selenium: emissions with great prostatic irritability, dribbling; loquacity about sex; less irritation, more trophic response. [Clarke].
    • Agnus: impotence with indifference to sex; desire may exist but power fails from fatigue, improves with reserve. [Boericke].
  • Organ affinity—Blood and nutrition
    • Ferr-phos.: first stage anæmia with febrile tendency; for the nutritive, non-febrile rebuilding phase. [Boericke].
    • Calc-phos.: growing children, bone pains; for brain-work debility and assimilation weakness. [Farrington].
  • Modalities—Better rest, routine; worse over-use
    • Gelsemium: examination weakness with drowsiness, tremor; acute; chronic, with weight/blood issues. [Kent].
    • Coffea: insomnia from mental activity; hyperæsthesia; insomnia from overtire, not over-excitement. [Clarke].

Remedy Relationships

  • Complementary: Kali-phos.—pairs in neurasthenia; Kali-phos. sharpens nerve tone while Lecith. rebuilds nutrition. [Kent], [Clarke].
  • Complementary: Ferr-phos.—early anæmia; Lecith. follows to consolidate blood and weight. [Boericke].
  • Complementary: Calc-phos.—in growing youths with over-study and poor assimilation. [Farrington].
  • Follows well: China—after acute losses when flatulence subsides and brain-fag remains. [Farrington].
  • Follows well: Nux-v.—when bad habits are corrected and a nutritive restorer is required. [Kent].
  • Precedes well: Phos-ac.—if apathy and losses recur despite rebuilding. [Clarke].
  • Related: Pic-ac., Selenium, Agnus, Gels., Coffea—see differentials. [Clarke], [Boericke].
  • Antidotes (tendencies): Rest, routine, pure air, and withdrawal of stimulants; medicinally Nux-v. when drugging and excesses cloud the case. [Kent], [Clarke].
    • Inimicals: None recorded; avoid alternation without new totality. [Kent].

Clinical Tips

  • Neurasthenia of students/clerks—brain-fag, empty headache, weak memory, better rest and food, worse late work: Lecith. 6C–30C once or twice daily, reducing as stamina returns [Clarke], [Boericke].
  • Sexual debility with emissions and depression after excess or illness—use Lecith., insist on reserve, routine, and early bed; compare Phos-ac., Selenium [Allen], [Clarke].
  • Convalescence with anæmia and weight loss—palpitation of weakness, short breath on stairs; Lecith. to rebuild, with Ferr-phos./Calc-phos. as needed [Boericke], [Farrington].
  • Nervous mothers with poor lactation—sleepless from exhaustion rather than pain; steady routine, diet and Lecith. often restore milk and mood [Clarke].

Selected Repertory Rubrics

Mind
Brain-fag; mental exertion aggravates—key to selection in workers and students. [Clarke], [Boericke].
Memory weak, especially for names and recent events—practical office cue. [Clarke].
Anxiety before examinations, blankness at desk—responds with routine and rest. [Kent], [Clarke].
Irritability from exhaustion; better after sleep/food—functional, not temperamental. [Boericke].
Aversion to conversation in evening; head “done.” [Clarke].
Despondency with sexual weakness; improves as power returns. [Allen], [Clarke].

Head
Headache from prolonged study, dull, heavy; better rest, open air. [Clarke], [Boericke].
Vertigo in anæmia, on rising; black specks. [Clarke].
Heaviness, emptiness of head; evening. [Clarke].
Hot head, cold feet at night in readers. [Boericke].
Scalp sensitive; hair falls in debilitated states. [Clarke].
Headache with eye-strain from near work. [Clarke].

Sleep
Insomnia from nervous exhaustion; unrefreshing sleep; drowsy by day. [Clarke], [Boericke].
Late hours aggravate all complaints next day. [Clarke].
Dreams of examinations; anxiety. [Kent], [Clarke].
Better after a short nap; capacity restored. [Clarke].
Coffee at night aggravates sleep and palpitation. [Clarke].
Sleepless nursing mothers, exhaustion-type. [Boericke].

Male
Emissions with depression; brain-fag; worse sexual excess. [Allen], [Clarke].
Impotence functional, fatigue-type; improves with reserve. [Clarke].
Backache after emissions, lumbar weakness. [Clarke].
Trembling after coitus, easy fatigue. [Boericke].
Desire present but power fails—distinguishes from Agnus. [Clarke].
Prostration from veneryChina and Phos-ac. compare. [Farrington].

Generalities
Weakness from over-work, mental or sexual; better rest and nourishment. [Clarke], [Boericke].
Anæmia with palpitation on slight exertion. [Clarke].
Open air ameliorates; close rooms aggravate. [Boericke].
Rapid growth or prolonged lactation exhausts. [Clarke].
Stimulants aggravate if used to push work late. [Clarke].
Tremulous weakness from slight exertion. [Boericke], [Phatak].

Heart / Chest
Palpitation of weakness; evening; after coffee or worry. [Clarke].
Soft, impressionable pulse in anæmia. [Hughes], [Clarke].
Short breath on ascending; convalescent. [Boericke].
Sighing respiration with brain-fag. [Clarke].
Better open air, worse close rooms. [Boericke].
No true angina—differentiates from cardiac remedies. [Farrington].

Stomach / Abdomen
Poor assimilation, early satiety; rich fats aggravate. [Clarke].
Hunger at 11 a.m. during brain-work—snack relieves. [Clarke].
Nervous eructations in readers. [Clarke].
Flatulence from sedentariness; routine helps. [Clarke].
Aversion to sloppy rich foods in weakness. [Clarke].
Better simple milk/eggs/broth if tolerated. [Clarke].

Extremities
Trembling of hands after prolonged work. [Boericke].
Heaviness of legs from slight effort; stairs. [Boericke].
Backache, lumbar, after emissions or sitting long. [Clarke].
Cold feet, hot head at night. [Boericke].
Fatigue quickly relieved by rest. [Clarke].
Crampy sensations in calves on over-use. [Phatak].

References

Allen, T. F. — Encyclopædia of Pure Materia Medica (1874–1879): fragments and clinical notes—sexual debility, neurasthenia, convalescence.
Hering, C. — The Guiding Symptoms of Our Materia Medica (1879–1891): confirmations—functional exhaustion, sleep, male sphere.
Clarke, J. H. — A Dictionary of Practical Materia Medica (1900): full remedy portrait—nutritive action (weight, blood), brain-fag, sexual weakness, convalescence; preparation notes.
Boericke, W. — Pocket Manual of Homœopathic Materia Medica (1901): keynotes—neurasthenia, anæmia, insomnia of exhaustion, male and female indications, modalities.
Hughes, R. — A Manual of Pharmacodynamics (late 19th c.): physiological background of lecithins; nerve-myelin and blood correlations; clinical analogies.
Farrington, E. A. — Clinical Materia Medica (1890): study vs. sexual-excess remedies—Pic-ac., Phos-ac., China—comparisons with Lecith.
Kent, J. T. — Lectures on Homœopathic Materia Medica (1905): philosophical distinctions—Kali-phos., Phos-ac., Nux-v. in mental/exhaustion states.
Boger, C. M. — Synoptic Key of the Materia Medica (1915): generalities—weakness, tremulousness, open-air amelioration; comparisons.
Phatak, S. R. — Materia Medica of Homoeopathic Medicines (20th c.): condensed keynotes—tremulous weakness, crampy fatigue, modalities.
Dewey, W. A. — Practical Homœopathic Therapeutics (early 20th c.): convalescence management; routine, diet, allied remedies.
Nash, E. B. — Leaders in Homœopathic Therapeutics (1899): clinical hints—losses and exhaustion sequences; remedy ordering.
Tyler, M. L. — Homœopathic Drug Pictures (20th c.): vignettes—over-worked students, nursing mothers; regimen with simple nourishment.

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