Drosera rotundifolia
as H.C. Allen recorded it in Keynotes and Characteristics with Comparisons of Some of the Leading Remedies of the Materia Medica, 1899
Sundew
This is one author on one remedy. The few symptoms that, when genuinely present, point at one remedy and not its neighbours. Read Drosera rotundifolia in every book at once →
Keynotes
Drosera rotundifolia
Sundew, Droseraceae.
Whooping-cough with violent paroxysms which follow each other rapidly, is scarcely able to get breath - (wakes at 6-7 a. m. and does not cease coughing until profuse epistaxis during every paroxysm, Ind. ; ‘^minute gun” during the day, whooping at night. Cor. r.).
Deep sounding, hoarse barking cough (Verb.), < after midnight, during or after measles; spasmodic, with gagging, retching and vomiting (Bry., Kali c.).
Constant, titillating cough in children, begins as soon as head touches pillow at night (Bell., Hyos., Rum.).
Nocturnal cough of young persons in phthisis; bloody or purulent sputa.
Cough; < by warmth, drinking, singing, laughing, weeping, lying down, after midnight.
OROSBRA WtOTV'Smt^OJ.lA—iCon^inufd).
During cough; vomiting of water, mucus, ^ind often bleeding at the nose and mouth (Cup.)*
Sensation of feather in larynx, exciting cough.
Diseases prevailing during epidemic pertussis.
Clergyman’s sore throat; with rough, scraping, dry sensation deep in the fauces; voice hoarse, deep, toneless, cracked, requires exertion to speak (Arum).
Constriction and crawling in larynx ; hoarseness, and yellow or green sputa.
Laryngeal phthisis following whooping-cough (bronchial catarrh following, Coc. c.).
Follows well : after, Samb., Sulph., Ver.
Is followed: by Cal., Puls., Sulph.
Compare: Cina, Coral., Cup., Ipec., Samb. in spasmodic coughs. Often relieves the constant, distress* ing night-cough in tuberculosis.
Hahnemann says (Mat. Med. Pura) : “One single dose of the 30th potency is sufficient to cure entirely epidemic whooping cough. The cure takes place surely between seven and eight days. Never give a second dose immediately after the first ; it would not only prevent the good effect of the former, but would be injurious.”
What the other books say about Drosera rotundifolia
The same remedy read by a different author. They disagree, and the disagreements are where the remedy becomes recognisable.
- Drosera rotundifolia in Boericke — The concise clinical Materia Medica that most Indian colleges teach from, in full.
- Drosera rotundifolia in Kent — Kent teaching a class, one remedy at a time — fewer remedies, far more on each.
- Drosera rotundifolia in Boger — A compressed key — the generals and the characteristic modalities, with very little narrative.
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Cite this page. H.C. Allen. Keynotes and Characteristics with Comparisons of Some of the Leading Remedies of the Materia Medica. 3rd edition (1910). Philadelphia: Boericke & Tafel. Drosera rotundifolia — Keynotes, p. 118. HomeopathyWorld, https://homeopathyworld.in/materia-medica/books/allen/drosera-rotundifolia. Published 1910: public domain in the US (before 1931) and in India (author died 1909). Replaces B. Jain's 2005 "rearranged and classified" edition (© the publisher), per the owner's decision of 13 Sep 2026. Reproduced as the author wrote it; a historical reference for students and practitioners, not medical advice.