Clarke gives the toxic effects of homeopathy drug Conium and its therapeutic uses in non-toxic doses in his book The ABC Manual of Materia Medica and Therapeutics, published in 1901….



      Restrains excessive muscular action. Hyperplastic conditions of the liver and mammary gland.



      Vertigo. Mental torpor. Double and confused vision. Paralytic condition of the legs, eyes, lids, jaw, larynx, and finally of the respiratory muscles. Numbness of the feet and legs has been remarked, as well as convulsive action and tremor of muscles.


      Extractum conii alcoholicum, I-5 gr.

Extractum conii fluidum, I-30 m.

Coniie, 1/60 – 1/10 gr.

These preparations are often inert. When active they should be prescribed with care. One grain of the extract may be given every hour or two until physiological effects are produced. The hydrobromate of coniine and the succus conii are trust worthy, the former in doses of one-sixtieth to one -twelfth grain every hour or two, or one-sixth to one-half grain twice per day, and the latter in doses of one half to four drams, as required.


      Mania, to restrain excessive muscular activity.

(Hydrobromate of coniine cautiously, to one or more grains per day).

Chorea, for temporary effects. (As for mania).


Paralysis agitans.

Hyperplasia of the mammary gland. (Small doses of the succus internally and the B. P. ointment locally).

Chronic congestion or hyperplasia of the liver.

(As for mammary gland).

Cancer. (Succus locally and internally).

George Hardy Clark
Clark, George H. (George Hardy) 1860-1941 was the author of: Homeopathic Treatment of Asthenopia; Lee and Clark's Cough and expectoration : a repertorial index of their symptoms; The A B C Manual of Materia Medica and Therapeutics; A system for the care and training of children; The Black Plague and Its Control.