Dulcamara: keynotes and uses
Dulcamara — bittersweet nightshade, the climbing woody vine of damp hedgerows — fills one of the most situational slots in the materia medica: the remedy whose whole picture turns on a single trigger, exposure to cold damp. Where Aconitum follows a dry cold wind and Rhus toxicodendron a soaking with overexertion, Dulcamara answers a complaint that follows getting wet and chilled, sleeping on damp ground, or the warm-day cold-night swing of autumn weather.
The plant and its place in the materia medica
Bittersweet is a perennial vine of the nightshade family, native to Europe and naturalised widely, with purple flowers and bright red berries; the name records the taste of its stems, bitter then sweet. Folk practice used it for skin and rheumatic complaints long before homeopathy adopted it.
The homeopathic preparation tinctures the fresh green stems and leaves, gathered before flowering, and potentises them through serial dilution and succussion in the standard Hahnemannian method. Hahnemann proved Dulcamara and recorded its damp-cold modality in detail; the picture was later fixed into modern shorthand by Boericke and Clarke.
Keynotes
Dulcamara is a worked example of a remedy chosen as much by its cause as by its symptoms: cold damp runs through the whole picture. Five features recur with enough consistency to serve as a practical checklist.
| Keynote dimension | Picture |
|---|---|
| Causation | Complaints from damp cold, getting wet, or chilling when overheated |
| Season | Worse in autumn, with warm days and cold damp nights |
| Catarrh | Thick yellow mucus; colds settling on chest, eyes, or bladder |
| Rheumatism | Stiffness and aching worse from cold and damp, better from motion |
| Modalities | Worse from cold and wet; better from movement and external warmth |
Boericke's shorthand still holds: Dulcamara covers ailments from cold, wet weather, and from sudden change of warm to cold. The damp-cold causation, especially the autumn pattern of warm days and cold nights, is the keynote that separates Dulcamara from the other cold-exposure remedies.
Indications
- Colds and catarrh following a soaking or a sudden chilling in damp weather; thick yellow mucus; tendency for colds to settle on the chest or bladder.
- Rheumatic stiffness brought on by exposure to cold and damp; pains worse at rest and better from continued motion and external warmth.
- Urinary symptoms appearing after sitting on cold, damp ground; the bladder sphere is generally vulnerable whenever the weather turns cold and wet.
- Damp-weather skin eruptions — moist, oozing, or crusty eruptions that worsen with cold and improve with warmth and dry conditions.
- Autumn aggravations in general — the seasonal keynote of warm days followed by cold nights is itself a confirming indication.
Dulcamara 6C or 30C is the usual reach, with the damp-cold causation and the seasonal timing as the primary confirming indications.
Differentiation: Dulcamara, Rhus tox, Aconitum
The cold-exposure remedies whose territories adjoin are most clearly separated by their causation and modalities.
| Dimension | Dulcamara | Rhus toxicodendron | Aconitum |
|---|---|---|---|
| Causation | Damp cold; getting wet; autumn chill | Getting wet while overheated; overexertion in the wet | Sudden dry, cold wind; fright |
| Onset | Gradual, following the exposure | Gradual stiffness, restlessness | Sudden, violent, within hours |
| Key relief | Motion and external warmth | Continued motion; warmth and dry weather | Open air; rest |
| Typical complaint | Damp colds, rheumatism, cystitis, skin | Stiff rheumatism, sprains, herpetic eruptions | First hours of fever, croup, shock |
Causation is the discriminating axis. Dulcamara's trigger is cold damp with or without exertion; Rhus tox requires overheating before the damp exposure; Aconitum follows a dry, sharp cold wind rather than dampness at all.
Red flags
A cold that does not resolve, breathing difficulty, high or persistent fever, or chest pain is a red-flag presentation needing prompt assessment, particularly in young children and the elderly. Dysuria with fever, loin pain, or haematuria points to urinary tract infection and warrants diagnosis. A new, spreading, or persistent rash should be examined.
Finding the rubric
A keynote phrase in plain language — "ailments from damp cold weather" — returns the right rubric and the remedies it lists in the free repertory, alongside the keynotes recorded here.
References
Boericke, W. (1927) Pocket Manual of Homoeopathic Materia Medica with Repertory, ninth edition, Philadelphia: Boericke & Tafel; entry on Dulcamara.
Clarke, J. H. (1900) A Dictionary of Practical Materia Medica, London: Homoeopathic Publishing Company; entry on Dulcamara.
Hahnemann, S. (1811–1821) Materia Medica Pura, reprint edited by R. E. Dudgeon (1880), London: Hahnemann Publishing; Dulcamara entry.
Kent, J. T. (1905) Lectures on Homoeopathic Materia Medica, Philadelphia: Boericke & Tafel; chapters on Rhus toxicodendron and Aconitum.
Milner, S. E., Brunton, N. P., Jones, P. W., O'Brien, N. M., Collins, S. G. and Maguire, A. R. (2011) Bioactivities of glycoalkaloids and their aglycones from Solanum species, Journal of Agricultural and Food Chemistry, 59(8), 3454–3484.