Yohimbinum — the alkaloid of yohimbe bark, from a tree of the Cameroons whose native use as an aphrodisiac brought it to European medicine around 1900 — is one of the materia medica's youngest and smallest remedies, and one of its most sharply drawn. It earned its homeopathic place the classical way: by poisoning in miniature.
Boericke states the field: it "excites sexual organs and acts on central nervous system and respiratory center... Homeopathically, should be of service in congestive conditions of the sexual organs."
This guide profiles Yohimbinum from Boericke, Clarke's Dictionary and Lippe's Red Line — a short study, because the sources are short, and honest length is part of accuracy. The originals can be read in full — Boericke's Yohimbinum and Clarke's Yohimbinum — through Similia's free digital materia medica.
The Substance and the Proving
Clarke tells the story compactly: the natives of West Africa discovered the aphrodisiac bark; the alkaloid Yohimbin was isolated and tested in Europe (he cites the Therapist of December 1900); and Lambreghts reported the case that furnishes almost the whole Schema — a young man of 28, "thin, anæmic, nervous, and partially impotent," who took three 5-milligram tablets across two days. The drug helped his sexual neurasthenia and simultaneously made him ill enough to stop it: fever-waves, disordered digestion, agitation, tremor, a racing heart. That double action — relieving the weakness while producing the congestion — is the remedy's homeopathic credential in miniature.
The Symptom Picture
Sexual sphere. The centre. "Strong and lasting erections" (Boericke) — in the prover, "in the morning strong and lasting erections without increase of desire," a dissociation worth noting. "Neurasthenic impotence" is Boericke's clinical heading, and Eulenburg's series treating exactly that state "with excellent results" is preserved by Clarke. Urethritis; bleeding piles; intestinal hæmorrhage; in women, menorrhagia; and the curious glandular note — "causes hyperæmia of the milk glands and stimulates the function of lactation."
Heat and circulation. The prover's vapeurs: "flying sensations of heat" heightening the colour of the face, then sweeping the back, heart-region and lower abdomen, "so that in spite of the cold weather the prover was inconvenienced by the intense heat and tendency to sweat" (Clarke). Rigor, waves of heat and chilliness; the pulse rising from 80 to 108; palpitation.
Nervous system. "Intense agitation, with trembling" — hands trembling so he could scarcely write, and his writing illegible (Clarke). And the mental keynote, printed by Boericke under Sleep: "Sleepless. Thoughts of events of whole past life keep him awake."
Digestion. Disagreeable metallic taste; copious salivation (Lippe compares Mercurius); appetite almost gone; nausea and eructation; "stools frequent, liquid, black, and bilious"; abundant clear foamy urine driving him up three times a night — Clarke's clinical heading diuresis.
Key Modalities
- Worse at night; from sexual excitement; during stool (Lippe)
- Better from sleep (Lippe)
Keynote Symptoms
- Strong, lasting erections without increased desire
- Neurasthenic impotence — the thin, anaemic, nervous, partially impotent patient
- Flying waves of heat: face, heart, back, abdomen; heat and sweat in cold weather
- Agitation with trembling; illegible handwriting
- Sleepless — the whole past life parades through the mind
- Metallic taste with copious salivation
- Menorrhagia; bleeding piles
- Hyperæmia of the milk glands; stimulated lactation
Clinical Applications
Congestive sexual states. Priapism-like erections and the congested pelvis — Clarke: "Yohim. should be a homœopathic remedy in priapism and congestive states of the sexual organs."
Sexual neurasthenia. The recorded cures sit exactly here: weakness of function in an exhausted, nervous, anaemic subject — with the paradoxical congestive signs deciding for Yohimbinum over the broader nerve remedies.
Menorrhagia and bleeding piles. On the hæmorrhagic-congestive thread that runs through the proving.
Lactation. The milk-gland hyperæmia is a small but distinctive lead where nursing and congestion meet.
Differential Diagnosis
Yohimbinum vs. Picric acid. Lippe and Clarke both bracket them under violent erections. Picric acid embeds them in its spinal collapse — burning spine, brain-fag, the washed-out "must give in" state; Yohimbinum's frame is vascular — heat-waves, racing heart, agitation — without the spinal softening.
Yohimbinum vs. Phosphorus. Phosphorus shares the erections and the flushing heat, inside a full constitutional picture — the tall, sensitive, hæmorrhagic patient. Yohimbinum is the narrow congestive state without that breadth; in an established Phosphorus constitution, Phosphorus will act deeper.
Yohimbinum vs. Cantharis. Cantharis pairs its violent erections with the furious urinary inflammation — the intolerable urging and burning. Yohimbinum's urinary accompaniment is the opposite: abundant, clear, unirritating diuresis.
Yohimbinum vs. Kali phos and Phosphoric acid (impotence). The great neurasthenic remedies for the same complaint, chosen when debility dominates and congestion is absent. Yohimbinum earns the case when the weakness coexists with the morning erections, the heat-waves and the agitation.
Repertorisation Tips
- Male; ERECTIONS; violent and Male; ERECTIONS; desire, without
- Male; IMPOTENCY; neurasthenic
- Generalities; HEAT; flushes of; waves
- Mind; THOUGHTS; persistent; past events, of; night
- Sleep; SLEEPLESSNESS; thoughts, from activity of
- Mouth; TASTE; metallic with Mouth; SALIVATION; copious
- Female; MENSES; copious
- Rectum; HÆMORRHOIDS; bleeding
The deciding combination is the paradox itself: functional weakness plus congestive signs — erections without desire, heat without warmth of circulation's comfort, agitation without strength. Our beginner's guide to repertorisation sets out the method in more detail.
Deepening Your Study
- Boericke gives the clinical frame — congestive sexual states, neurasthenic impotence, lactation — and the sleep keynote
- Clarke's Dictionary preserves the substance history and the Lambreghts proving-case in full
- Lippe's Red Line sets the remedy among its neighbours with comparison lists for every leading symptom
You can read all of these side by side through Similia's free digital materia medica. For the neighbouring pictures, see the guides to Picric acid and Phosphorus.
